Q-type method handles & behaviors<\/caption>\n
lookup expression<\/th>\n	possible bytecode<\/th>\n	stack effect \/ MH type<\/th>\n<\/tr>\n<\/thead>\n
\n `VT<QC>.defaultValueConstant()<\/code><\/p>\n<\/td>\n`	\n \u201cvdefault\u201d `QC<\/code><\/p>\n<\/td>\n`	\n `()<\/code> \u2192 QC<\/code><\/p>\n<\/td>\n<\/tr>\n`
\n `VT<QC>.substitutabilityTest()<\/code><\/p>\n<\/td>\n`	\n ?<\/p>\n<\/td>\n	\n `(QC QC)<\/code> \u2192 boolean<\/code><\/p>\n<\/td>\n<\/tr>\n`
\n `VT<QC>.substitutabilityHashCode()<\/code><\/p>\n<\/td>\n`	\n ?<\/p>\n<\/td>\n	\n `(QC)<\/code> \u2192 int\/long<\/code><\/p>\n<\/td>\n<\/tr>\n`
\n `L.findGetter(QC, f, QT)<\/code><\/p>\n<\/td>\n`	\n \u201cvgetfield\u201d `QC.f:QT<\/code><\/p>\n<\/td>\n`	\n `(QC)<\/code> \u2192 QT<\/code><\/p>\n<\/td>\n<\/tr>\n`
\n `VT<QC>.findWither(L, QC, f, QT)<\/code><\/p>\n<\/td>\n`	\n \u201cvwithfield\u201d `QC.f:QT<\/code><\/p>\n<\/td>\n`	\n `(QC, QT)<\/code> \u2192 QC<\/code><\/p>\n<\/td>\n<\/tr>\n`
\n `L.findVirtual(QC, m, (QA*)QT)<\/code><\/p>\n<\/td>\n`	\n \u201cvinvoke\u201d `QC.m(QA*)QT<\/code><\/p>\n<\/td>\n`	\n `(QC QA*)<\/code> \u2192 QT<\/code><\/p>\n<\/td>\n<\/tr>\n`
\n `L.findGetter(RC, f, QT)<\/code><\/p>\n<\/td>\n`	\n \u201cgetfield\u201d `RC.f:QT<\/code><\/p>\n<\/td>\n`	\n `(RC)<\/code> \u2192 QT<\/code><\/p>\n<\/td>\n<\/tr>\n`
\n `L.findSetter(RC, f, QT)<\/code><\/p>\n<\/td>\n`	\n \u201cputfield\u201d `RC.f:QT<\/code><\/p>\n<\/td>\n`	\n `(RC, QT)<\/code> \u2192 void<\/code><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n` \u3053\u306e\u8868\u306f\u3001\u5358\u306bQ_typed\u5024\u3092\u30b3\u30d4\u30fc\u3057\u305f\u308a\u3001\u901a\u5e38\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u914d\u5217\u304b\u3089\u8aad\u307f\u8fbc\u3093\u3060\u308a\u683c\u7d0d\u3057\u305f\u308a\u3059\u308b\u591a\u304f\u306e\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u305b\u3093\u3002 \u3053\u306e\u3088\u3046\u306a\u64cd\u4f5c\u306f\u3001findStaticGetter<\/code>, findStaticSetter<\/code>, findVirtual<\/code>, findStatic<\/code>, findStaticSetter<\/code>, arrayElementSetter<\/code>, identity<\/code>, constant <\/code>\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5834\u6240\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 <\/p>\n Reminder: All this will change<\/h4>\n\u4e0a\u8a18\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u304a\u3088\u3073API\u306f\u3001Java\u306e value types \u306e\u6700\u7d42\u5f62\u5f0f<\/strong>\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u3053\u306e\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u958b\u767a\u3055\u308c\u305f\u30b3\u30fc\u30c9\u306f\u3001\u5b8c\u5168\u306a\u6a5f\u80fd\u304c\u4f5c\u6210\u3055\u308c\u305f\u3068\u304d\u306b\u306f\u3001\u5fc5\u305a\u7834\u68c4\u3057\u3066\u66f8\u304d\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n Future work<\/h4>\n\u3053\u306e\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306f\u3001\u4e8b\u5b9f\u4e0a\u4e00\u6642\u7684\u304b\u3064\u66ab\u5b9a\u7684\u3067\u3059\u3002 \u6700\u7d42\u7684\u306a\u4ed5\u69d8\u3067\u306f\u306a\u304f\u3001\u4eca\u5f8c\u306e\u4f5c\u696d\u306b\u5fc5\u8981\u306a\u57fa\u76e4\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u4eca\u5f8c\u306e\u4f5c\u696d\u306e\u4e00\u90e8\u306f\u672c\u8cea\u7684\u306b\u66ab\u5b9a\u7684\u306a\u3082\u306e\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304c\u3001\u6642\u9593\u304c\u305f\u3064\u306b\u3064\u308c\u3001\u79c1\u305f\u3061\u306e\u6210\u529f\u3092\u8e0f\u307e\u3048\u3001\u9593\u9055\u3044\u304b\u3089\u5b66\u3073\u3001\u6700\u7d42\u7684\u306b\u306f\u592a\u967d\u306e\u4e0b\u3067\u50cd\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3046\u307e\u304f\u8a2d\u8a08\u3055\u308c\u305f\u4ed5\u69d8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 <\/p>\n value types\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3053\u306e\u73fe\u5728\u306e\u4e00\u9023\u306e\u6a5f\u80fd\u306f\u3001\u64cd\u4f5c\u304c\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u610f\u56f3\u7684\u3067\u3059\u3002 \u3053\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u6b8b\u308a\u306e\u90e8\u5206\u3067\u306f\u3001\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u5b9f\u7528\u7684\u3067\u306a\u3044\u5b9f\u9a13\u3092\u53ef\u80fd\u306b\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u8ffd\u52a0\u6a5f\u80fd\u3092\u793a\u3057\u307e\u3059\u3002 <\/p>\n \u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306e\u6700\u5f8c\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306f\u5b89\u5168\u306b\u30b9\u30ad\u30c3\u30d7\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u306e\u3088\u3046\u306a\u6a5f\u80fd\u306f\u3001\u8ffd\u6c42\u3055\u308c\u305f\u5834\u5408\u306b\u306f\u3001\u72ec\u81ea\u306e\u88cf\u4ed8\u6587\u66f8\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\u6700\u5c0f\u5024\u63d0\u6848\u3067\u6b20\u843d\u3057\u3066\u3044\u308b\u6a5f\u80fd\u306b\u6c17\u4ed8\u3044\u305f\u4eba\u3005\u306b\u3068\u3063\u3066\u306f\u3001\u8208\u5473\u6df1\u3044\u3053\u3068\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 <\/p>\n Denoting Q-types in Java source code<\/h5>\n\u6700\u4f4e\u9650\u3001Q-types\u3092\u6271\u3046\u305f\u3081\u306e\u8a00\u8a9e\u306e\u5909\u66f4\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002 \u8208\u5473\u6df1\u3044\u30de\u30a4\u30af\u30ed\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u5b9f\u884c\u3059\u308b\u306b\u306f\u3001JVM\u30cf\u30c3\u30ad\u30f3\u30b0\uff08value-capable classes\uff09\u3001annotation-driven classfile\u5909\u63db\u3001\u30c0\u30a4\u30ec\u30af\u30c8\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u751f\u6210\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u5341\u5206\u3067\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306f\u3001\u30c0\u30a4\u30ec\u30af\u30c8\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u751f\u6210\u306e\u6709\u76ca\u306a\u4ee3\u66ff\u624b\u6bb5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001Q-types\uff08\u4ee5\u4e0b\u3067\u8aac\u660e\u3057\u307e\u3059\uff09\u3092\u4f7f\u7528\u3057\u3066\u5b8c\u5168\u306b\u64cd\u4f5c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n \u305d\u308c\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u8a00\u8a9e\u30b5\u30dd\u30fc\u30c8\u306e\u3088\u3046\u306a\u3082\u306e\u306f\u3042\u308a\u307e\u305b\u3093\u3002 javac\u3092\u4f7f\u7528\u3057\u305f\u975e\u5e38\u306b\u521d\u671f\u306e\u5b9f\u9a13\u3067\u306f\u3001Q-types\u3092\u53c2\u7167\u3057\u3066\u5909\u6570\u3092Java\u30b3\u30fc\u30c9\u3067\u76f4\u63a5\u4f5c\u6210\u3059\u308b\u7c21\u5358\u306a\u65b9\u6cd5\u304c\u4f5c\u6210\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08\u3082\u3061\u308d\u3093\u6587\u8108\u4e0a\u306e\u5236\u7d04\u304c\u3042\u308a\u307e\u3059\uff09\u3002 <\/p>\n \u7279\u306b\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u3001value types\u306e\u3088\u3046\u306b\u4e00\u898b\u7b49\u4fa1\u306a\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3068\u306f\u975e\u5e38\u306b\u7570\u306a\u308b\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u5f62\u3092\u3057\u3066\u3044\u307e\u3059\u3002 (Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u69cb\u6587\u306f\u3001\u3059\u3079\u3066\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304cfinal\u3067\u3042\u308b\u9650\u308a\u3001value type\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u5b8c\u5168\u306a\u8868\u8a18\u6cd5\u3067\u3059\u3002) javac\u304c\u3001value-capable class\u306e\u5404\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u4e21\u65b9\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u30d0\u30a4\u30c8\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u8ca0\u62c5\u3092\u8ca0\u3046\u3053\u3068\u306f\u5408\u7406\u7684\u3067\u3059\u3002 <\/p>\n \u540c\u69d8\u306b\u3001value type\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u76f4\u63a5\u547c\u3073\u51fa\u3057\u3001\u304a\u3088\u3073value type \u30e1\u30bd\u30c3\u30c9\u3068\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u306f\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u30b5\u30dd\u30fc\u30c8\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u3001invokedynamic\u547c\u3073\u51fa\u3057\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u3001Java\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304b\u3089\u4f7f\u7528\u3059\u308b\u3068\u4fbf\u5229\u3067\u3059\u3002 <\/p>\n Q-replacement within value-capable classes<\/h5>\nJava\u30bd\u30fc\u30b9\u304b\u3089\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305fvalue-capable class\u306f\u3001value-capable class\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u30ed\u30fc\u30c9\u307e\u305f\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u3068\u304d\u306b\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u30ec\u30d9\u30eb\u306e\u5909\u63db\u3068\u3057\u3066\u3001Q-types\u306e\u5c0e\u5165\u3092\u5f15\u304d\u8d77\u3053\u3059\u9078\u629e\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u304a\u3088\u3073\u30e1\u30bd\u30c3\u30c9\u3067\u8ffd\u52a0\u306e\u6ce8\u91c8\uff08\u307e\u305f\u306f\u5c5e\u6027\uff09\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u6709\u7528\u3068\u601d\u308f\u308c\u308b2\u3064\u306e\u5909\u63db\u306f\u3001Q-replacement <\/em>\u304a\u3088\u3073 Q-overloading <\/em>\u3068\u547c\u3070\u308c\u3066\u3082\u3088\u3044\u3002 \u6700\u521d\u306fL-types\u3092\u524a\u9664\u3057\u3001Q-types\u3067\u7f6e\u304d\u63db\u3048\u307e\u3059\u304c\u30012\u756a\u76ee\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u5358\u7d14\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u30b3\u30d4\u30fc\u3057\u3001\u8a18\u8ff0\u5b50\u306eL-types \u306e\u4e00\u90e8\u307e\u305f\u306f\u5168\u90e8\u3092\u5bfe\u5fdc\u3059\u308bQ-types\u3067\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002 \u3053\u306e\u30a2\u30a4\u30c7\u30a2\u306e\u30bb\u30c3\u30c8\u306f\u3001JDK-8164889<\/a>\u3068\u3057\u3066\u8ffd\u8de1\u3055\u308c\u307e\u3059\u3002 <\/p>\n annotation-driven Q-replacment\u306b\u4ee3\u308f\u308b\u3082\u306e\u306f\u5b9f\u9a13\u7684\u306a\u8a00\u8a9e\u6a5f\u80fd\u3067\u3042\u308a\u3001Q-types\u3092Java\u30bd\u30fc\u30b9\u3067\u76f4\u63a5\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u5b9f\u9a13\u306f\u3001Valhalla Project\u306e\u4e00\u74b0\u3068\u3057\u3066\u884c\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u3001\u65e9\u6025\u306b\u5909\u63db\u304c\u4e0d\u8981\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n More bytecodes<\/h5>\n\u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb defaultValueConstant<\/code> \u306f\u3001\u65b0\u3057\u3044 vdefault<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3001\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d aconst_null<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb substitutabilityTest<\/code> \u306f\u3001\u65b0\u3057\u3044 vcmp<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3001\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d if_acmpeq<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb findWither<\/code> \u306f\u3001\u65b0\u3057\u3044 vwithfield<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb findGetter<\/code> \u306f\u3001\u9069\u5207\u306b\u62e1\u5f35\u3055\u308c\u305f getfield<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayConstructor<\/code> \u306f\u3001\u9069\u5207\u306b\u5f37\u5316\u3055\u308c\u305f anewarray<\/code> \u307e\u305f\u306f multianewarray<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayElementGetter<\/code> \u306f\u3001\u65b0\u3057\u3044 vaload<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d\u306e aaload<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayElementSetter<\/code> \u306f\u3001\u65b0\u3057\u3044 vastore<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d\u306e aastore<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayLength<\/code> \u306f\u3001\u9069\u5207\u306b\u5f37\u5316\u3055\u308c\u305f arraylength<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u3053\u306e\u30c7\u30b6\u30a4\u30f3\u306e\u6700\u7d42\u7684\u306a “\u30b9\u30a4\u30fc\u30c8\u30b9\u30dd\u30c3\u30c8”\u306f\u3001Q-types\u3060\u3051\u3067\u306a\u304f\u3042\u3089\u3086\u308b\u30bf\u30a4\u30d7\u8a18\u8ff0\u5b50\u306b\u8a00\u53ca\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3001values\u3001\u304a\u3088\u3073\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3092\u5bfe\u79f0\u7684\u306b\u6271\u3046\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\uff08\u307e\u305f\u306f\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u4ed8\u304d\u30de\u30af\u30ed\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\uff09\u306e\u5358\u4e00\u306e\u30bb\u30c3\u30c8\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u300c\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u300d\u306f\u3001uload<\/code>, ustore<\/code>, uinvoke<\/code>, ucmp<\/code>, u2u <\/code>\u306a\u3069\u306e\u72ec\u81ea\u306e\u547d\u540d\u898f\u5247\u306b\u670d\u5f93\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u304c\u5024\u3060\u3051\u3067\u52d5\u4f5c\u3059\u308b\u5834\u5408\u3001v*<\/code> \u547d\u540d\u898f\u5247\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 <\/p>\n \u8a18\u8ff0\u5b50\u578b I<\/code> \u306f\u3001int\u3001short\u3001boolean\u3001char\u3001\u304a\u3088\u3073byte\u3092\u6271\u3046\u305f\u3081\u306bJVM\u3067\u4f7f\u7528\u3055\u308c\u3001\u3059\u3079\u3066\u306e\u7a2e\u985e\u306eL-types\u3092\u4fdd\u6301\u3059\u308b\u305f\u3081\u306b\u8a18\u8ff0\u5b50\u578b L<\/code> \uff08\u30af\u30e9\u30b9\u4ed8\u304d\uff09\u304c\u4f7f\u7528\u3055\u308c\u308b\u306e\u3068\u540c\u69d8\u306b\u3001\u8a18\u8ff0\u5b50\u578b Q<\/code> \uff08\u30af\u30e9\u30b9\u4ed8\u304d\uff09\u306f\u3001\u3042\u3089\u3086\u308b\u7a2e\u985e\u306eK-types\u3092\u904b\u3076\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u4e8b\u5b9f\u30014\u3064\u306eI-types\u3068L-types\u3068Q-types\u306e\u7121\u9650\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u5b9f\u969b\u306b\u306fJVM\u306b\u306f3\u3064\u306e\u30ad\u30e3\u30ea\u30a2\u30bf\u30a4\u30d7\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002 \uff08long\u578b\u3001float\u578b\u3001double\u578b\u306e\u5358\u5f62\u30ad\u30e3\u30ea\u30e4\u578b\u3082\u3042\u308a\u307e\u3059\uff09L-type\u30ad\u30e3\u30ea\u30e4\u306f\u30d2\u30fc\u30d7\u3092\u6307\u3059\u5358\u4e00\u306e\u6a5f\u68b0\u8a9e\u3067\u3059\u304c\u3001Q-type\u30ad\u30e3\u30ea\u30e4\u306f\u3088\u308a\u8907\u96d1\u3067\u3059\u3002 \u3044\u304f\u3064\u304b\u306evalue\u306e “\u30da\u30a4\u30ed\u30fc\u30c9”\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u306e\u30b5\u30a4\u30ba\u3068\u30ec\u30a4\u30a2\u30a6\u30c8\uff08\u5c11\u306a\u304f\u3068\u3082GC\u306e\uff09\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002 \u5b9f\u969b\u306b\u306f\u3001value\u2019s class\u3082\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u7d50\u5c40\u3001Q-type\u306e\u30ad\u30e3\u30ea\u30a2\u306f\u5b9f\u969b\u306b\u306f\u30d0\u30c3\u30d5\u30a1\u306e\u578b\u4ed8\u304d\u30ed\u30b1\u30fc\u30bf\u306e\u4e00\u7a2e\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u4efb\u610f\u306e\u5834\u6240\uff08Java\u30d2\u30fc\u30d7\u3001C\u30d2\u30fc\u30d7\u3001\u30b9\u30ec\u30c3\u30c9\u30b9\u30bf\u30c3\u30af\uff09\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3053\u306e\u5185\u90e8\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u30d2\u30fc\u30d7\u5185\u306eJava\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3068\u6574\u5217\u3055\u305b\u308b\u3068\u3001\u5358\u7d14\u306b\u30dd\u30a4\u30f3\u30bf\u3092\u623b\u3059 vbox<\/em> \u3084 vunbox<\/em> \u306a\u3069\u306e\u6700\u9069\u5316\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002 \u3055\u3089\u306b\u91cd\u8981\u306a\u3053\u3068\u306f\u3001\u30bf\u30b0\u30d3\u30c3\u30c8\u306e\u53cd\u8ee2\u3060\u3051\u3067\u3001\u4efb\u610f\u306eQ-type\u307e\u305f\u306f\u4efb\u610f\u306eU-type \u3082\u52b9\u7387\u7684\u306b\u9001\u4fe1\u3067\u304d\u308b\u3001\u6700\u7d42\u7684\u306aJVM\u30ad\u30e3\u30ea\u30a2\u30bf\u30a4\u30d7\u3067\u3042\u308bU-type\u30ad\u30e3\u30ea\u30a2\u3092\u52b9\u7387\u7684\u306b\u4f5c\u6210\u3067\u304d\u308b\u3053\u3068\u3067\u3059\u3002 <\/p>\n U-types\u304c\u5fc5\u8981\u3067\u3042\u308b\u3068\u5224\u660e\u3057\u305f\u5834\u5408\u3001\u305d\u308c\u4ee5\u4e0a\u306eU-mode\u547d\u4ee4\u304c\u4f5c\u6210\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3002 \u3057\u304b\u3057\u3001\u305d\u306e\u5834\u5408\u3001Q-type\u30ad\u30e3\u30ea\u30a2\u3068U-type\u30ad\u30e3\u30ea\u30a2\u3068\u304c\u540c\u4e00\u3067\u3042\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001Q-mode\u3068U-mode\u306e\u547d\u4ee4\u3092\u5927\u304d\u304f\u7d71\u5408\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3042\u308b\u3002 \u691c\u8a3c\u8005\u306f\u3001Q-type\u304c\u300cpure value\u300d\u3067\u3042\u3063\u305f\u304b\u3001U-type\u3068\u306e\u7d50\u5408\u306b\u3088\u3063\u3066\u300cpolluted(\u6c5a\u67d3\u3055\u308c\u305f)\u300d\u304b\u3069\u3046\u304b\u3092\u8ffd\u8de1\u3057\u7d9a\u3051\u308b\u3060\u308d\u3046\u3002 \u8ad6\u7406\u7684\u306b\u306f\u3001U-types\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u3068 null \u3092\u6301\u3061\u307e\u3059\u304c\u3001Q-types\u306f\u305d\u3046\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 \u3057\u304b\u3057\u5171\u901a\u306e\u30ad\u30e3\u30ea\u30a2\u30bf\u30a4\u30d7\u306f\u3001\u3059\u3079\u3066\u306eQ-type values\u3068\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u3001\u53c2\u7167\u5024\u306e\u305f\u3081\u306b\u5225\u306e\u30bf\u30b0\u3092\u4ed8\u3051\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3053\u308c\u3092\u5358\u7d14\u306b\u30e2\u30c7\u30eb\u5316\u3067\u304d\u307e\u3059\u3002 \u7d50\u5c40\u3001Q-mode\u547d\u4ee4\u306e\u5927\u534a\u306f\u304a\u305d\u3089\u304fU-mode\u547d\u4ee4\u306b\u6607\u683c\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3092\u3044\u304f\u3064\u304b\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067\u6700\u5927\u306e\u67d4\u8edf\u6027\u304c\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p>\n \u6700\u5c0f\u9650\u306e\u63d0\u6848\u306f\u3001U-types\u3092\u5fc5\u8981\u3068\u3057\u307e\u305b\u3093\u3002 \u306a\u305c\u306a\u3089\u3001\u6c4e\u7528\u6027\u306e\u3042\u308bvalues\u3092\u8a66\u3059\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3057\u3001\u3059\u3079\u3066\u306e\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u547c\u3073\u51fa\u3057\u304c\uff08\u73fe\u5728\u306f\uff09L-type\u306e\u30dc\u30c3\u30af\u30b9\u5316\u3055\u308c\u305fVCC\u306b\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u308b\u304b\u3089\u3067\u3059\u3002 <\/p>\nMore data structures<\/h5>\n\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u306f\u3001value types\u306e\u3059\u3079\u3066\u306e\u7279\u5fb4\u306e\u81ea\u7531\u306a\u76f8\u4e92\u9069\u7528\u306b\u3088\u3063\u3066\u6697\u793a\u3055\u308c\u308b\u69d8\u3005\u306a\u30b3\u30fc\u30ca\u30fc\u30b1\u30fc\u30b9\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u3053\u308c\u3089\u306e\u30b3\u30fc\u30ca\u30fc\u30b1\u30fc\u30b9\u3067\u306e\u5857\u308a\u3064\u3076\u3057\u306f\u4fbf\u5229\u3067\u3059\u3002 \u3055\u3089\u306b\u3001value types\uff08\u304a\u3088\u3073\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\uff09\u306e\u5236\u9650\u306f\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u524a\u9664\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u6a5f\u80fd\u7684\u5897\u52a0\u306b\u306f\u3001\u69d8\u3005\u306a\u6bb5\u968e\u3067: <\/p>\n\nvalue types\u304c\u975e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\uff08Q-types\u3001L-types\uff09\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5ba3\u8a00\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002\n \u3059\u3079\u3066\u306evalue types\u306e\u30d5\u30e9\u30c3\u30c8\u5316\u3055\u308c\u305f\u914d\u5217\u3092\u5b9f\u88c5\u3059\u308b\u3002\n values\u3078\u306e\u30a2\u30c8\u30df\u30c3\u30af\u306a\u30a2\u30af\u30bb\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\uff08\u305f\u3068\u3048\u3070\u3001volatile <\/code>\u3068\u30de\u30fc\u30af\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\uff09\u3002\n values\u306e\u30b9\u30fc\u30d1\u30fc\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3059\u308b\uff08\u901a\u5e38\u306eJVM\u5236\u7d04\u4ed8\u304d\u30a2\u30e9\u30a4\u30f3\u30e1\u30f3\u30c8\uff08\u901a\u5e3864\u30d3\u30c3\u30c8\uff09\u3092\u8d85\u3048\u3066\uff09\u3002\n value types\u306eJVM\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u8a73\u7d30\u306e\u4f4e\u30ec\u30d9\u30eb\uff08\u201cunsafe\u201d\uff09\u53cd\u6620\u3092\u63d0\u4f9b\u3059\u308b\u3002\n value-type\u306e\u30b3\u30f3\u30c6\u30ca\u3092\u4f7f\u7528\u3057\u3066\u3001\u5916\u90e8\u578b\uff08C unsigned<\/code>\uff09\u307e\u305f\u306f\u30bb\u30fc\u30d5\u30dd\u30a4\u30f3\u30bf\uff08\u305f\u3068\u3048\u3070\u3001\u30a2\u30c9\u30ec\u30b9+\u5883\u754c\u3068\u578b+\u30b9\u30b3\u30fc\u30d7\uff09\u3092\u8868\u3057\u307e\u3059\u3002\n numeric type\u306e\u30bf\u30ef\u30fc\u3092\u8868\u3059\u306b\u306f\u3001value-type\u306e\u30b3\u30f3\u30c6\u30ca\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\n \u4e0a\u8a18\u306e\u3059\u3079\u3066\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30b9\u30c8\u30ec\u30fc\u30b8\u5bc6\u5ea6\u3092\u6700\u9069\u5316\u3059\u308b\u3002\n Integer<\/code> \u3084Q-type boxes\u306a\u3069\u306evalue-based\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\u306e\u8aa4\u4f7f\u7528\u3092\u691c\u51fa\u307e\u305f\u306f\u9632\u6b62\u3059\u308b\u305f\u3081\u306b\u4f55\u304b\u3092\u884c\u3044\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u8ab0\u304b\u304c\u305d\u308c\u3089\u3092\u540c\u671f\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u30a8\u30e9\u30fc\u3092\u6295\u3052\u307e\u3059\u3002\n value types\u3092\u76f4\u63a5\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3002\n \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\uff08\u91cd\u8981\u306a\uff09\u5b9f\u884c\u3092\u542b\u3080\u3001value types\u3067\u76f4\u63a5\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u5b9f\u88c5\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002\n \u4ee5\u4e0b\u306e\u305f\u3081\u306e\u65b9\u6cd5\u3092\u30ef\u30fc\u30af\u30a2\u30a6\u30c8\n Q-type value\u307e\u305f\u306fL-type value\u306e\u3044\u305a\u308c\u304b\u3092\u76f4\u63a5\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3001\u5b89\u5168\u306b\u30bf\u30b0\u4ed8\u3051\u3055\u308c\u305f\u4e92\u3044\u306b\u7d20\u306a\u7d50\u5408\u578b\uff08\u201cP-types\u201d\uff09\u3092\u63d0\u4f9b\u3059\u308b\u3002\n \u5370\u5237\u3001\u6bd4\u8f03\u3001\u304a\u3088\u3073\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u7528\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u542b\u3080\u3001values\u306e\u6a19\u6e96\u5f62\u72b6\u3092\u4f5c\u6210\u3059\u308b\u3002\nQ-types\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u7279\u6b8a\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3092\u8ffd\u52a0\u3059\u308b\u3002 \uff08\u5927\u304d\u306a\u3082\u306e\uff01\uff09 <\/li>\n<\/ul>\nvalue types\u304c\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068\u5b8c\u5168\u306b\u7d71\u5408\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001Q-type\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u304b\u3089 default<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3001values\u3068\u6c4e\u7528\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304a\u3088\u3073\u30c7\u30fc\u30bf\u69cb\u9020\uff08\u30bd\u30fc\u30c8\u3084 TreeMap <\/code>\u306a\u3069\uff09\u3068\u306e\u76f8\u4e92\u904b\u7528\u6027\u306e\u91cd\u8981\u306a\u5f62\u5f0f\u3067\u3059\u3002 \u6700\u5c0f\u9650\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3053\u306e\u4f5c\u696d\u3092\u884c\u3046\u306b\u306f\u3001value\u3092\u30dc\u30af\u30b7\u30f3\u30b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u4e0d\u5feb\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30dc\u30c3\u30af\u30b9\u3067\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u5b8c\u5168\u306a\u5b9f\u88c5\u3067\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u7279\u5b9a\u306evalue type\u306b\u6700\u9069\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u307e\u305f\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u30e1\u30bd\u30c3\u30c9\u81ea\u4f53\u304c\u3001value-based types\uff08\u30cc\u30eb\u307e\u305f\u306f\u540c\u671f\u306a\u3057\u3001\u5236\u9650\u4ed8\u304d==\u306a\u3069\uff09\u306b\u9069\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u5fc5\u8981\u3067\u3059\u3002 \u3053\u308c\u306b\u306f\u3001\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u305f\u3055\u3089\u306a\u308b\u4f5c\u696d\u304c\u5fc5\u8981\u3067\u3059\u3002 <\/p>\n interface-array type I[] <\/code>\u304cvalue type QT <\/code>\u306e\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u3067\u3042\u3063\u3066\u3082\u3001value-bearing array type QT[]<\/code> \u3092interface-array type I[]<\/code>\u306e\u30b5\u30d6\u30bf\u30a4\u30d7\u306b\u3059\u308b\u3053\u3068\u306f\u96e3\u3057\u3044\u3088\u3046\u3067\u3059\u3002 \u3053\u308c\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u306f\u3001JVM\u578b\u69cb\u9020\u306e\u3055\u3089\u306a\u308b\u4f5c\u696d\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002 Interface types I<\/code> \u306f\u73fe\u5728L-type\u30ad\u30e3\u30f3\u30d7\u306b\u3057\u3063\u304b\u308a\u3068\u3044\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u914d\u5217\u306f\u53c2\u7167\u914d\u5217\u306a\u306e\u3067\u3001Object []\u306e\u30b5\u30d6\u30bf\u30a4\u30d7\u3067\u3042\u308a\u3001\u3057\u305f\u304c\u3063\u3066\u53c2\u7167\u914d\u5217\u3068\u3057\u3066\u898b\u3048\u307e\u3059\u3002 \u3057\u304b\u3057\u3001value types QT<\/code> \u306e\u914d\u5217\u306f\u3001\uff08\u900f\u904e\u7684\u306b\uff09\u53c2\u7167\u306e\u914d\u5217\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 <\/p>\nBridge-o-matic<\/h5>\n\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001Q\u3067\u7f6e\u304d\u63db\u3048\u3089\u308c\u305fAPI\u30dd\u30a4\u30f3\u30c8\u3092\u30af\u30e9\u30b9\u306b\u4f9b\u7d66\u3059\u308b\u3053\u3068\u306f\u3001\u9069\u5207\u306a\u30d6\u30ea\u30c3\u30b8\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u306e\u5358\u306a\u308b\u554f\u984c\u3067\u3059\u3002 \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u307e\u305f\u306f\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u306f\u3001\u30d6\u30ea\u30c3\u30b8\u304c\u9069\u5207\u306b\u7de8\u6210\u3055\u308c\u305f\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\uff08\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u306f\u306a\u304f\uff09\u5834\u5408\u3001\u305d\u306e\u3088\u3046\u306a\u30d6\u30ea\u30c3\u30b8\u30e1\u30bd\u30c3\u30c9\u306e\u30dc\u30c7\u30a3\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u6027\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u30a2\u30a4\u30c7\u30a2\u306e\u30bb\u30c3\u30c8\u306b\u306f\u3001\u6a19\u6e96 equals<\/code>, hashCode,toString <\/code>\u30e1\u30bd\u30c3\u30c9\u306e\u81ea\u52d5\u751f\u6210\u3092\u542b\u3080\u591a\u304f\u306e\u8ffd\u52a0\u7528\u9014\u304c\u3042\u308a\u307e\u3059\u3002 JDK-8164891<\/a>\u3068\u3057\u3066\u8ffd\u8de1\u3055\u308c\u307e\u3059\u3002 <\/p>\n Natural (JVM-native) value-type classfiles<\/h5>\n\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306f\u3001box-first\u306e\u8aad\u307f\u8fbc\u307f\u9806\u3001POJO types\u306e\u8aad\u307f\u8fbc\u307f\u3001\u305d\u308c\u3089\u304b\u3089values\u3068box types\u306e\u5c0e\u51fa\u3067\u59cb\u307e\u308a\u307e\u3059\u3002 box types\uff08\u6700\u521d\u306f\uff09\u306f\u5358\u7d14\u306bPOJO types \u3067\u3042\u308a\u3001value types\u306fPOJO type\u304b\u3089\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u3092\u62bd\u51fa\u3057\u3066\u5185\u90e8\u7684\u306b\u6d3e\u751f\u3057\u305f\u69cb\u9020\u4f53\u3067\u3059\u3002 value type\u3060\u3051\u3092\u5bfe\u8c61\u3068\u3057\u305f\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u3063\u3066\u3082\u3001\u6700\u521d\u306fPOJO\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3053\u308c\u306f\u3001\u5909\u66f4\u3055\u308c\u305f\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u3088\u3063\u3066\u76f4\u63a5\u6307\u5b9a\u3055\u308c\u305fvalue types\u3068\u3001value types \u306e\u30ed\u30fc\u30c9\u4e2d\u306b\u5c0e\u51fa\u3055\u308c\u305f\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306bvalue-first\u306e\u30ed\u30fc\u30c9\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n POJO-based\u306e\u30ed\u30fc\u30c9\u30fb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u6642\u4ee3\u9045\u308c\u306b\u306a\u308b\u306e\u3067\u3001\u30dc\u30c3\u30af\u30b9\u81ea\u4f53\u306f\u5f15\u304d\u7d9a\u304dPOJO-shaped\u306evalue types\u3067\u3042\u308b\u304b\u3001\u5225\u306e\u30d5\u30a9\u30fc\u30e0\u3092\u4f7f\u7528\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3053\u306e\u5909\u66f4\u306f\u3001value-first \u8a2d\u8a08\u3067\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u975e\u6a19\u6e96\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306b\u3001value types\u306e\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30c4\u30fc\u30eb\uff08\u30b3\u30f3\u30d1\u30a4\u30e9\u3001\u30c7\u30d0\u30c3\u30ac\u3001IDE\u306a\u3069\uff09\u3092\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u6bd4\u8f03\u7684\u9ad8\u984d\u306b\u306a\u308a\u307e\u3059\u3002 \u4e0a\u8a18\u306e\u3088\u3046\u306b\u3001\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306e\u5384\u4ecb\u306a\u70b9\u306e\u3044\u304f\u3064\u304b\u306f\u3001\u30c4\u30fc\u30eb\u30c1\u30a7\u30fc\u30f3\u306e\u5909\u66f4\u3092\u5fc5\u8981\u3068\u3059\u308b\u6a5f\u80fd\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u6ce8\u610f\u304c\u6255\u308f\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u6a5f\u80fd\u306b\u306f: <\/p>\n\nValue-first\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff08\u4f8b\u3048\u3070\u3001\u30d8\u30c3\u30c0\u306e ACC_VALUE<\/code> \u30d3\u30c3\u30c8\uff09\u3002\n Q-types\u306e\u30bd\u30fc\u30b9\u8a00\u8a9e\u306b\u3088\u308b\u8868\u8a18\u3002\n Q-types\u3068Q-types\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3057\u3066\u30bf\u30a4\u30d7\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u76f4\u63a5\u30ed\u30fc\u30c9\u3059\u308b\u305f\u3081\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3002\n Q-types\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u76f4\u63a5\u547c\u3073\u51fa\u3059\u305f\u3081\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3002\n\u914d\u5217\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306a\u3069\u3068value types\u306e\u5b8c\u5168\u306a\u7d71\u5408 <\/li>\n<\/ul>\nHeisenboxes<\/h5>\n\u4e0a\u3067\u793a\u5506\u3057\u305f\u3088\u3046\u306b\u3001values\u306eL-types\u306fvalue-based\u3067\u3042\u308a\u3001JVM\u306e\u4e00\u90e8\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u3053\u308c\u3092\u5b9f\u884c\u3057\u3088\u3046\u3068\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059: <\/p>\n\nboxed Q-type value\u3092\u540c\u671f\u3059\u308b\u3068\u3001IllegalMonitorStateException <\/code>\u306e\u3088\u3046\u306a\u4f8b\u5916\u304c\u30b9\u30ed\u30fc\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\n \u53c2\u7167\u6bd4\u8f03\uff08Java\u6f14\u7b97\u5b50==\u307e\u305f\u306f acmp<\/code> \u547d\u4ee4\uff09\u306f\u3001\u4ee5\u524d\u306b\u53c2\u7167\u304cfalse\u3092\u8fd4\u3059\u5834\u5408\u3067\u3082\u30012\u3064\u306e\u540c\u7b49\u306eboxed Q-type values\u306b “true”\u3092\u8fd4\u3057\u3001\u4ee5\u524d\u306b “true”\u3092\u8fd4\u3057\u305f\u3068\u304d\u306b “false”\u3092\u8fd4\u3057\u307e\u3059\u3002 \u305d\u306e\u3088\u3046\u306a\u5909\u5316\u306f\u3082\u3061\u308d\u3093\u3001\u57fa\u790e\u3068\u306a\u308bQ-types\u306e\u4ee3\u66ff\u53ef\u80fd\u6027\u306e\u8ad6\u7406\u306b\u5f93\u3046\u3053\u3068\u306b\u306a\u308b\u3002 \u304b\u3064\u3066\u306f\u7b49\u3057\u3044\u53c2\u7167\u3068\u3057\u3066\u691c\u51fa\u3055\u308c\u305f2\u3064\u306e\u30dc\u30c3\u30af\u30b9\u306f\u3001\u76f8\u4e92\u306b\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u53ef\u80fd\u3067\u3042\u3063\u305f\u3002\n setAccessible<\/code> \u304c\u547c\u3073\u51fa\u3055\u308c\u305f\u5f8c\u3067\u3042\u3063\u3066\u3082\u3001boxed Q-type values\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306bvalues\u3092\u53cd\u6620\u3057\u3066\u683c\u7d0d\u3057\u3088\u3046\u3068\u3059\u308b\u8a66\u307f\u304c\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\nsetAccessible<\/code> \u304c\u547c\u3073\u51fa\u3055\u308c\u305f\u5f8c\u3067\u3082\u3001\u30dc\u30c3\u30af\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u53cd\u5c04\u7684\u306b\u547c\u3073\u51fa\u305d\u3046\u3068\u3059\u308b\u8a66\u307f\u304c\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 <\/li>\n<\/ul>\n\u76e3\u67fb\u304b\u3089\u76e3\u67fb\u307e\u3067\u306e\u9593\u3001\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u72b6\u614b\u304c\u4e0d\u78ba\u5b9f\u306a\u30dc\u30c3\u30af\u30b9\u306f\u3001\u300cheisenbox\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002 \u3053\u306e\u985e\u63a8\u3092\u8ffd\u6c42\u3059\u308b\u305f\u3081\u306b\u30012\u3064\u306eheisenboxes\u306e true<\/code> \u306e\u53c2\u7167\u5e73\u7b49\uff08==<\/code>, acmp<\/code>\uff09\u76e3\u67fb\u306f\u5b8c\u5168\u306b\u76f8\u4e92\u7f6e\u63db\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u305d\u308c\u3089\u3092\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u300c\u5d29\u58ca\u300d\u3059\u308b\u306e\u3067\u3001\u305d\u308c\u3089\u306eQ-values\u3082\u540c\u7b49\u3067\u3059\u3002 \u53c2\u7167\u306e2\u3064\u306e\u30b3\u30d4\u30fc\u306f\u3001boxed values\u306e\u7d99\u7d9a\u7684\u306a\u76f8\u4e92\u7f6e\u63db\u6027\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u5f8c\u3067\u975e\u516c\u5f0f\u3067\u3042\u308b\u3053\u3068\u3092\u5831\u544a\u3057\u3066\u89e3\u4f53\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u5e73\u7b49\u306e\u8ff0\u8a9e\u306f\u30b7\u30e5\u30ec\u30fc\u30c7\u30a3\u30f3\u30ac\u30fc\u306e\u732b\u304c\u5165\u3063\u3066\u3044\u308b\u30dc\u30c3\u30af\u30b9\u306b\u914d\u7dda\u3057\u3066\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u591a\u304f\u306e\u56f0\u60d1\u3068\u60b2\u3057\u3044\u7d50\u679c\u304c\u3042\u308a\u307e\u3059… <\/p>\n\u3053\u306e\u30a2\u30a4\u30c7\u30a3\u30a2\u306e\u30bb\u30c3\u30c8\u306f\u3001JDK-8163133<\/a>\u3068\u3057\u3066\u8ffd\u8de1\u3055\u308c\u307e\u3059\u3002 <\/p>\n References<\/h4>\n[values]: http:\/\/cr.openjdk.java.net\/~jrose\/values\/values.html<\/a> [valhalla-dev]: http:\/\/mail.openjdk.java.net\/pipermail\/valhalla-dev\/<\/a> [goetz-jvmls15]: http:\/\/www.oracle.com\/technetwork\/java\/jvmls2015-goetz-2637900.pdf<\/a> [valsem-0411]: http:\/\/mail.openjdk.java.net\/pipermail\/valhalla-spec-experts\/2016-April\/000118.html<\/a> [simms-vbcs]: http:\/\/mail.openjdk.java.net\/pipermail\/valhalla-dev\/2016-June\/001981.html<\/a> [graves-jvmls16]: http:\/\/youtu.be\/Z2XgO1H6xPM?list=PLX8CzqL3ArzUY6rQAQTwI_jKvqJxrRrP_<\/a> [value-based]: http:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/lang\/doc-files\/ValueBased.html<\/a> [JEP-11]: http:\/\/openjdk.java.net\/jeps\/11<\/a> [goetz-jvmls16]: http:\/\/www.youtube.com\/watch?v=Tc9vs_HFHVo<\/a> [Long2.java]: http:\/\/hg.openjdk.java.net\/panama\/panama\/jdk\/file\/70b3ceb485cf\/src\/java.base\/share\/classes\/java\/lang\/Long2.java<\/a> [cimadamore-refman]: http:\/\/cr.openjdk.java.net\/~mcimadamore\/reflection-manifesto.html<\/a> [bcbehavior]: http:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/lang\/invoke\/MethodHandles.Lookup.html#equiv<\/a> [JDK-8164891]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8164891<\/a> [JDK-8177279]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8177279<\/a> [JDK-8164889]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8164889<\/a> [JDK-8163133]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8163133<\/a><\/p>\n \u4ee5\u4e0a\u3001HTML\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30b3\u30d4\u30da\u3057\u305f\u306e\u3067\u5909\u306a\u611f\u3058\u306b\u306a\u3063\u3066\u307e\u3059\u3002(^_^;<\/p>\n \u305d\u308c\u4ee5\u524d\u306b\u3053\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u958b\u767a\u306b\u643a\u308f\u308b\u4eba\u5411\u3051\u306e\u3088\u3046\u3067\u79c1\u306b\u306f\u4f55\u306e\u4fa1\u5024\u3082\u306a\u3044\u3082\u306e\u3067\u3057\u305f\u3002(>_<\uff61)<\/p>\n Hatena \u30bf\u30b0: Java<\/a><\/div>\n\n <\/a><\/div>\n <\/a><\/div>\n <\/g:plusone><\/div>\n Tweet<\/a><\/div>\n <\/div>\n \n","protected":false},"excerpt":{"rendered":"Minimal Value Types April 2017: Minimal Edition (v. 0.4) \u3092\u307b\u3068\u3093\u3069\u6a5f\u68b0\u7ffb\u8a33\u3057\u3066\u307f\u305f\u3002 Minimal Value Types April 2017: Minimal Edition (v. 0.4) John Rose, Brian Goetz \u201cWhat we do in the shadows reveals our true values.\u201d Background value types\u306efirst public proposal [values] \u304b\u30893\u5e74\u5f8c\u3001Java\u30b3\u30f3\u30d1\u30a4\u30e9\u3001\u30af\u30e9\u30b9\u30fb\u30d5\u30a1\u30a4\u30eb\u30fb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3001VM\u3067\u6d3b\u767a\u306a\u30d7\u30ed\u30c8\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[17],"class_list":["post-2407","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2407"}],"version-history":[{"count":1,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2407\/revisions"}],"predecessor-version":[{"id":2408,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2407\/revisions\/2408"}],"wp:attachment":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2407"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":2407,"date":"2017-12-05T19:49:41","date_gmt":"2017-12-05T10:49:41","guid":{"rendered":"http:\/\/yucchi.jp\/blog\/?p=2407"},"modified":"2017-12-05T19:49:41","modified_gmt":"2017-12-05T10:49:41","slug":"valhalla-%e6%a5%bd%e3%81%97%e3%81%84%ef%bc%9f-%e3%81%9d%e3%81%ae%ef%bc%94","status":"publish","type":"post","link":"http:\/\/yucchi.jp\/blog\/?p=2407","title":{"rendered":"Valhalla \u697d\u3057\u3044\uff1f \u305d\u306e\uff14"},"content":{"rendered":"

Minimal Value Types April 2017: Minimal Edition (v. 0.4) \u3092\u307b\u3068\u3093\u3069\u6a5f\u68b0\u7ffb\u8a33\u3057\u3066\u307f\u305f\u3002<\/em><\/p>\n

Minimal Value Types<\/h3>\n
April 2017: Minimal Edition (v. 0.4)<\/em><\/h6>\n
John Rose, Brian Goetz<\/h6>\n
\u201cWhat we do in the shadows reveals our true values.\u201d<\/em> <\/p>\n
Background<\/h4>\n
value types\u306efirst public proposal [values]<\/a> \u304b\u30893\u5e74\u5f8c\u3001Java\u30b3\u30f3\u30d1\u30a4\u30e9\u3001\u30af\u30e9\u30b9\u30fb\u30d5\u30a1\u30a4\u30eb\u30fb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3001VM\u3067\u6d3b\u767a\u306a\u30d7\u30ed\u30c8\u30bf\u30a4\u30d4\u30f3\u30b0\u304c\u884c\u308f\u308c\u307e\u3057\u305f vigorous discussions [valhalla-dev]<\/a>\u3002
\u76ee\u6a19\u306f\u3001\u52b9\u7387\u7684\u306a\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u5171\u901a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3001\u53c2\u7167\u3001\u304a\u3088\u3073values\u3092\u7d71\u4e00\u3059\u308b\u3053\u3068\u3067\u3057\u305f\u3002 <\/p>\n
\u8b70\u8ad6\u306e\u591a\u304f\u306f\u3001Java\u3068JVM\u3067\u5b8c\u5168\u306a\u30d1\u30e9\u30e1\u30c8\u30ea\u30c3\u30af\u591a\u5f62\u6027\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001 generic specialization [goetz-jvmls15]<\/a>\u306b\u96c6\u4e2d\u3057\u3066\u3044\u307e\u3059\u3002
\u305d\u308c\u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u304c\u53c2\u7167\u3068\u5341\u5206\u306b\u6574\u5217\u3067\u304d\u306a\u3044\u3059\u3079\u3066\u306e\u65b9\u6cd5\u3092\u516c\u958b\u3057\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u30e2\u30c7\u30eb\u3092\u62e1\u5f35\u3059\u308b\u3088\u3046\u306b\u5f37\u5236\u3059\u308b\u305f\u3081\u3001\u610f\u56f3\u7684\u3067\u5b9f\u308a\u591a\u3044\u3082\u306e\u3067\u3057\u305f\u3002
List <int>\u3092\u89e3\u6c7a\u3059\u308b\u3068\u3001List <Complex <int >>\u3092\u7c21\u5358\u306b\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002 <\/p>\n
\u4ed6\u306e\u8b70\u8ad6\u3067\u306f\u3001 \u30d0\u30ea\u30e5\u30fc\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9[valsem-0411]<\/a>\u306e\u8a73\u7d30\u3068\u3001 values\u3092\u6271\u3046[simms-vbcs]<\/a>\u306e\u65b0\u3057\u3044\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5177\u4f53\u7684\u306a\u65b9\u6cd5\u306b\u96c6\u4e2d\u3057\u3066\u3044\u307e\u3059\u3002
\u3044\u304f\u3064\u304b\u306e\u5b9f\u9a13\u3067\u306f\u3001 \u30d9\u30af\u30c8\u30eb\u5316\u30eb\u30fc\u30d7[graves-jvmls16]<\/a>\u306e\u3088\u3046\u306a\u6709\u7528\u306a\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u3001values\u306e\u3088\u3046\u306aAPI\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002 <\/p>\n
\u6700\u8fd1\u3067\u306f\u3001JVM Language Summit\uff082016\uff09\u3001\u305d\u3057\u3066\u305d\u306e\u9031\u306eValhalla EG\u30df\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u3001vector\u3001Panama\u3001GPU\u5b9f\u9a13\u306b\u9069\u3057\u305fvalue types\u306e\u30a2\u30fc\u30ea\u30fc\u30a2\u30af\u30bb\u30b9\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u7e70\u308a\u8fd4\u3055\u308c\u3066\u3044\u307e\u3059\u3002
\u3053\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u306f\u3001\u65e9\u671f\u63a1\u7528\u8005\u306b\u9069\u3057\u305f\u3001JVM\u306e\u5b9f\u9a13value type\u30b5\u30dd\u30fc\u30c8\u306e\u30b5\u30d6\u30bb\u30c3\u30c8\uff08\u304a\u3088\u3073\u3088\u308a\u5c0f\u3055\u3044\u7a0b\u5ea6\u3001\u8a00\u8a9e\u3068\u30e9\u30a4\u30d6\u30e9\u30ea\uff09\u306e\u6982\u8981\u3092\u8aac\u660e\u3057\u307e\u3059\u3002
\u305d\u3057\u3066\u3001\u79c1\u305f\u3061\u306f\u3053\u3053\u6570\u30f6\u6708\u3067\u3053\u308c\u3089\u306e\u30a2\u30a4\u30c7\u30a3\u30a2\u306e\u591a\u304f\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3092\u4f5c\u3063\u3066\u3044\u307e\u3057\u305f\u3002 <\/p>\n
\u632f\u308a\u8fd4\u3063\u3066\u307f\u308b\u3068\u3001\u3053\u306e\u8907\u96d1\u306a\u672a\u6765\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u305f\u3081\u306b\u4f55\u5343\u4eba\u3082\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u6642\u9593\u304c\u8cbb\u3084\u3055\u308c\u3066\u3044\u308b\u3068\u63a8\u6e2c\u3059\u308b\u3053\u3068\u306f\u5408\u7406\u7684\u3067\u3059\u3002
\u4eca\u3001\u3053\u306e\u30d3\u30b8\u30e7\u30f3\u3092\u6349\u3048\u3066\u3001\u6700\u521d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3001\u3064\u307e\u308avalue types\u306e\u305f\u3081\u306e\u300chello world\u300d\u30b7\u30b9\u30c6\u30e0\u306e\u4e00\u7a2e\u3092\u9078\u3076\u6642\u304c\u6765\u307e\u3057\u305f\u3002 <\/p>\n
\u672c\u6587\u66f8\u306f\u3001\u4ee5\u4e0b\u306e\u76ee\u6a19\u3092\u3082\u3063\u3066\u3001value-type\u6a5f\u80fd\u306e\u6700\u5c0f\u5316\u3055\u308c\u305f\u5b9f\u884c\u53ef\u80fd\u306a\u30b5\u30d6\u30bb\u30c3\u30c8\u3092\u63d0\u6848\u3059\u308b\uff1a <\/p>\n
\n
HotSpot JVM\uff08\u53c2\u7167\u5b9f\u88c5\uff09\u306b\u5b9f\u88c5\u3059\u308b\u306e\u306f\u7c21\u5358\u3067\u3059\u3002\n
Java\u8a00\u8a9e\u307e\u305f\u306fVM\u306e\u4eca\u5f8c\u306e\u5c55\u958b\u3092\u5236\u7d04\u3057\u306a\u3044\n
\u521d\u671f\u306e\u5b9f\u9a13\u3084\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u4f5c\u6210\u306b\u30d1\u30ef\u30fc\u30e6\u30fc\u30b6\u30fc\u304c\u4f7f\u7528\u53ef\u80fd\n
JVM\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u306e\u6700\u5c0f\u5909\u66f4\n
\u3053\u306e\u3088\u3046\u306a\u5909\u66f4\u306e\u4f7f\u7528\u306f\u3001\u5b9f\u9a13\u7684\u306a\u9818\u57df\u3067\u306e\u307f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u9632\u5fa1\u3055\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\n
\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u6a19\u6e96\u7684\u306a\u30c4\u30fc\u30eb\u30c1\u30a7\u30fc\u30f3\u3092\u4f7f\u7528\u3057\u3066value-using code\u3092\u958b\u767a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/li>\n<\/ul>\n
\u79c1\u305f\u3061\u306e\u975e\u76ee\u6a19\u306f\u3001\u76ee\u6a19\u3092\u88dc\u5b8c\u3059\u308b\u3082\u306e\u3067\u3059\uff1a <\/p>\n
\n
value types\u306e\u65e2\u77e5\u306e\u3059\u3079\u3066\u306e\u8a00\u8a9e\u69cb\u9020\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\n
Java\u8a00\u8a9e\u306e\u69cb\u6587\u3084\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u8a2d\u8a08\u306b\u30b3\u30df\u30c3\u30c8\u3057\u306a\u3044\n
Java\u30b3\u30fc\u30c9\u3067value types\u3092\u30b3\u30fc\u30c9\u5316\u3059\u308bJava\u30d7\u30ed\u30b0\u30e9\u30de\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\n
\u6700\u7d42\u7684\u306a\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u5f62\u5f0f\u3092\u63d0\u6848\u3057\u306a\u3044\n
\u4e00\u822c\u7684\u306a\u4f7f\u7528\u306e\u305f\u3081\u306b\u914d\u5099\u3055\u308c\u307e\u305b\u3093\uff08\u5f53\u521d\u3067\u306f\u306a\u304f\u3001\u304a\u305d\u3089\u304f\u6c7a\u3057\u3066\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09\n
\u958b\u767a\u8005\u30c4\u30fc\u30eb\u30c1\u30a7\u30fc\u30f3\u306e\u5782\u76f4\u7d71\u5408\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044<\/li>\n<\/ul>\n
\u8a00\u3044\u63db\u3048\u308c\u3070\u3001\u79c1\u305f\u3061\u306evalues\u3092\u4e00\u65e5\u306e\u5149\u306b\u5411\u3051\u3066\u516c\u958b\u3059\u308b\u524d\u306b\u3001\u8098\u639b\u3051\u3068\u30b9\u30da\u30c3\u30af\u306e\u9593\u306e\u65e5\u9670\u306e\u9818\u57df\u3067\u8a66\u4f5c\u3057\u307e\u3059\u3002
\u3053\u306e\u3088\u3046\u306a\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306f\u3001\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u7121\u7528\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002
\u305d\u308c\u306f\u3001value types\u306e\u8a2d\u8a08\u3068\u5b9f\u88c5\u306b\u5bfe\u3059\u308b\u69d8\u3005\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u8a66\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u7834\u68c4\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002
\u30d1\u30ef\u30fc\u30e6\u30fc\u30b6\u30fc\uff08\u591a\u304f\u306e\u5834\u5408\u3001\u8a2d\u8a08\u8005\u3084\u5b9f\u88c5\u8005\u3068\u5bc6\u63a5\u306b\u5354\u529b\u3059\u308b\uff09\u304c\u3055\u307e\u3056\u307e\u306a\u521d\u671f\u4f7f\u7528\u4e8b\u4f8b\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u53ef\u7528\u6027\u306e\u898b\u7a4d\u3082\u308a\u3092\u6539\u5584\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 <\/p>\n
Features<\/h4>\n
value types\u306e\u6700\u5c0f\u9650\u306e\uff08\u3057\u304b\u3057\u5b9f\u884c\u53ef\u80fd\u306a\uff09\u30b5\u30dd\u30fc\u30c8\u306e\u5177\u4f53\u7684\u306a\u7279\u5fb4\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8981\u7d04\u3067\u304d\u307e\u3059\u3002 <\/p>\n
\n
VM\u304c\u95a2\u9023\u4ed8\u3051\u3089\u308c\u305fderived value types<\/strong>\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u3001\u3044\u304f\u3064\u304b\u306evalue-capable classes<\/strong>\uff08Int128\u306a\u3069\uff09\u3002\n
\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306e\u65b0\u3057\u3044value types\u3092\u8a18\u8ff0\u3059\u308bDescriptor<\/strong> \u306e\u69cb\u6587\uff08 “Q-types”\uff09\u3002\n
\u5b9a\u6570\u30d7\u30fc\u30eb\u306econstants<\/strong>\u304c\u62e1\u5f35\u3055\u308c\u3001\u3053\u308c\u3089\u306e\u8a18\u8ff0\u5b50\u3068\u76f8\u4e92\u904b\u7528\u3067\u304d\u307e\u3059\u3002\n
JVM\u306e\u30ed\u30fc\u30ab\u30eb\u3068\u30b9\u30bf\u30c3\u30af\u9593\u3067value types\u3092\u79fb\u52d5\u3059\u308b\u305f\u3081\u306ebytecode instructions<\/strong>\uff08vload\u306a\u3069\uff09\u306e\u5c0f\u3055\u306a\u30bb\u30c3\u30c8\u3002\n
value types\u306ereflection<\/strong>\u304c\u5236\u9650\u3055\u308c\u3066\u3044\u307e\u3059\uff08int.class\u306b\u4f3c\u3066\u3044\u307e\u3059\uff09\u3002\n
Boxing<\/strong>\u3068\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u3001Java\u306e\u6c4e\u7528\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\u306e\u89b3\u70b9\u304b\u3089values\uff08\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306e\u3088\u3046\u306a\uff09\u3092\u8868\u73fe\u3059\u308b\u3002\n
\u30e1\u30bd\u30c3\u30c9\u306f\u3001value operations\uff08\u30e1\u30f3\u30d0\u30fc\u30a2\u30af\u30bb\u30b9\u306a\u3069\uff09\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u63d0\u4f9b\u3059\u308bfactories<\/strong> \u3092\u51e6\u7406\u3057\u307e\u3059<\/li>\n<\/ul>\n
value-capable classes\u306e\u3042\u308b\u30af\u30e9\u30b9\u306f\u3001\u6a19\u6e96\u306ePOJO\u30af\u30e9\u30b9\u3068\u3057\u3066\u4eca\u65e5\u306e\u30c4\u30fc\u30eb\u30c1\u30a7\u30fc\u30f3\u3067\u958b\u767a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\u3053\u306e\u4f7f\u7528\u30e2\u30fc\u30c9\u3067\u306f\u3001\u6a19\u6e96\u306eJava\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\uff08\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30af\u30e9\u30b9\u304a\u3088\u3073\u30e1\u30bd\u30c3\u30c9\u3092\u542b\u3080\uff09\u306f\u3001\u30dc\u30c3\u30af\u30b9\u5316\u3055\u308c\u305f\u5f62\u5f0f\u3067\u306e\u307fvalues\u3092\u53c2\u7167\u3067\u304d\u307e\u3059\u3002
\u305f\u3060\u3057\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3068\u7279\u5225\u306b\u751f\u6210\u3055\u308c\u305f\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u4e21\u65b9\u306f\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u30a2\u30f3\u30dc\u30c3\u30af\u30b9\u5f62\u5f0f\u3067values\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002 <\/p>\n
\u3053\u306e\u4ed5\u4e8b\u306fJVM\u306b\u95a2\u9023\u3059\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u8a00\u8a9e\u306b\u95a2\u9023\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u3057\u305f\u304c\u3063\u3066\u3001\u975e\u76ee\u6a19\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/p>\n
\n
Java\u30b3\u30fc\u30c9\u304b\u3089\u76f4\u63a5value types\u3092\u5b9a\u7fa9\u307e\u305f\u306f\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u69cb\u6587\u3002\n
\u30dc\u30c3\u30af\u30b9\u5316\u3055\u308c\u3066\u3044\u306a\u3044values\uff08\u307e\u305f\u306f\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\uff09\u3092\u683c\u7d0d\u307e\u305f\u306f\u51e6\u7406\u3067\u304d\u308bJava\u30b3\u30fc\u30c9\u306e\u30b9\u30da\u30b7\u30e3\u30e9\u30a4\u30ba\u30c9\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30b9\u3002\n
\u30e9\u30a4\u30d6\u30e9\u30ea\u306evalue types\u307e\u305f\u306fjava.util.Optional\u306e\u3088\u3046\u306avalue-based classes\u306e\u9032\u5316\u3057\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u3002\n
\u4efb\u610f\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u304b\u3089\u306evalue types\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3002 \uff08\u901a\u5e38\u3001value-capable classes\u306f\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3055\u308c\u307e\u305b\u3093\uff09\u3002<\/li>\n<\/ul>\n
value types\u306e\u5168\u4f53\u7684\u306a\u30d3\u30b8\u30e7\u30f3\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u30b9\u30ed\u30fc\u30ac\u30f3\u300c\u30af\u30e9\u30b9\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3001int\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3057\u307e\u3059\u300d\u304c\u4e0e\u3048\u3089\u308c\u305f\u5834\u5408\u3001\u3053\u306e\u6700\u5c0f\u30bb\u30c3\u30c8\u306f\u300c\u30dc\u30c3\u30af\u30b9\u3084\u30cf\u30f3\u30c9\u30eb\u3067\u30ad\u30e3\u30c3\u30c1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308c\u3070int\u306e\u3088\u3046\u306a\u50cd\u304d\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3092\u63d0\u4f9b\u3057\u307e\u3059 \u3002 <\/p>\n
\u3053\u306e\u4f5c\u696d\u306e\u7bc4\u56f2\u3092\u9650\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001value-type\u30b9\u30bf\u30c3\u30af\u5168\u4f53\u3092\u4e00\u5ea6\u306b\u3059\u3079\u3066\u63d0\u4f9b\u3059\u308b\u3088\u308a\u306f\u308b\u304b\u306b\u65e9\u304f\u3001\u5b9f\u52d5\u7684\u306a\u5b9f\u9a13\u3092\u672c\u756aJVM\u3067\u6709\u52b9\u306b\u3067\u304d\u308b\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002 <\/p>\n
\u65b0\u3057\u3044JVM\u30ec\u30d9\u30eb\u306e\u6a5f\u80fd\u306e\u30b5\u30dd\u30fc\u30c8\u306b\u3088\u308a\u3001\u65b0\u3057\u3044\u8a00\u8a9e\u6a5f\u80fd\u3068\u305d\u306e\u6a5f\u80fd\u3092\u76f4\u63a5\u4f7f\u7528\u3067\u304d\u308b\u30c4\u30fc\u30eb\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d4\u30f3\u30b0\u304c\u5373\u5ea7\u306b\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002
\u3057\u304b\u3057\u3001\u3053\u306e\u6700\u5c0f\u9650\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u3001\u305d\u306e\u3088\u3046\u306a\u8a00\u8a9e\u6a5f\u80fd\u3084\u30c4\u30fc\u30eb\u306b\u4f9d\u5b58\u3057\u307e\u305b\u3093\u3002 <\/p>\n
\u3053\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u6b8b\u308a\u306e\u90e8\u5206\u306f\u3001\u63d0\u6848\u3055\u308c\u305f\u6a5f\u80fd\u306b\u8a73\u3057\u304f\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <\/p>\n
Value-capable classes<\/h4>\n
\u30af\u30e9\u30b9\u306b\u306f@DeriveValueType\uff08\u307e\u305f\u306f\u591a\u5206\u5c5e\u6027\uff09\u3068\u3044\u3046\u7279\u5225\u306a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u4ed8\u3051\u3089\u308c\u307e\u3059\u3002
\u3053\u306e\u30de\u30fc\u30ad\u30f3\u30b0\u3092\u6301\u3064\u30af\u30e9\u30b9\u306f\u3001value-capable class<\/em>\uff08\u307e\u305f\u306f\u7565\u3057\u3066VCC\uff09\u3068\u547c\u3070\u308c\u3001\u95a2\u9023\u3059\u308bderived value type<\/em>\uff08\u307e\u305f\u306fDVT\uff09\u304c\u30af\u30e9\u30b9\u306e\u578b\u3092\u8d85\u3048\u3066\u4ed8\u4e0e\u3055\u308c\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 <\/p>\n
\u3053\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u4f7f\u7528\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u65b9\u6cd5\u3067\u5236\u9650\u304a\u305d\u3089\u304f\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u30ed\u30c3\u30af\u89e3\u9664\u3001\u53ca\u3073incubator module [JEP-11]<\/a>\u306e\u3042\u308b\u7a2e\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u307e\u3059 <\/p>\n
Example:<\/p>\n
@jvm.internal.value.DeriveValueType\npublic final class DoubleComplex {\n public final double re, im;\n private DoubleComplex(double re, double im) {\n this.re = re; this.im = im;\n }\n ... \/\/ toString\/equals\/hashCode, accessors, math functions, etc.\n}<\/code><\/pre>\n\u30de\u30fc\u30af\u3055\u308c\u305f\u30af\u30e9\u30b9\u306e\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u306f\u3001\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3068\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u3001\u30de\u30fc\u30af\u3055\u308c\u305fvalue-capable class\u3092\u95a2\u9023\u3059\u308bderived value type\u306e\u30bd\u30fc\u30b9\u3068\u3057\u3066\u8003\u616e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n value-capable class\u306e\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u306fObject\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002 \uff08\u3053\u308c\u306f\u3001\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u306a\u3044\u5b8c\u5168\u306a\u63d0\u6848\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002\uff09 <\/p>\nvalue-capable\u3068\u3057\u3066\u30de\u30fc\u30af\u3055\u308c\u305f\u30af\u30e9\u30b9\u306f\u3001\u305d\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u95a2\u9023\u3059\u308bvalue type\u306evalues\u306e\u30dc\u30c3\u30af\u30b9\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u305f\u3081\u3001value-based<\/a>\u3068\u3057\u3066\u4fee\u98fe\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u7279\u306b\u3001\u30af\u30e9\u30b9\u3068\u305d\u306e\u3059\u3079\u3066\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306ffinal\u3068\u30de\u30fc\u30af\u3055\u308c\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306fprivate\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002 <\/p>\n value-capable\u3068\u3057\u3066\u30de\u30fc\u30af\u3055\u308c\u305f\u30af\u30e9\u30b9\u306f\u3001value\u306e\u30dc\u30c3\u30af\u30b9\u5316\u3055\u308c\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u4e0d\u78ba\u5b9a\u306a\u7d50\u679c\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u3001\u305d\u308c\u81ea\u4f53\u306e\u4efb\u610f\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306eObject\u3067\u63d0\u4f9b\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002 equals\u30e1\u30bd\u30c3\u30c9\u3001hashCode\u30e1\u30bd\u30c3\u30c9\u3001toString\u30e1\u30bd\u30c3\u30c9\u306f\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u4f8b\u5916\u3068\u3057\u3066\u3001getClass\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u7531\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u305d\u308c\u306fvalue-capable\u306a\u30af\u30e9\u30b9\u3067\u5b9a\u6570\u8fd4\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u3063\u3066\u7f6e\u304d\u63db\u3048\u3089\u308c\u305f\u304b\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3057\u307e\u3059\u3002 <\/p>\n \u3059\u3079\u3066\u306evalue-based\u30af\u30e9\u30b9\u3068\u540c\u69d8\u306b\u3001\u4ed6\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30e1\u30bd\u30c3\u30c9\uff08clone\u3001finalize\u3001wait\u3001notify\u3001\u304a\u3088\u3073notifyAll\uff09\u306f\u3001value-capable\u30af\u30e9\u30b9\u3067\u4f7f\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002 \uff08\u3053\u308c\u306f\u30e6\u30fc\u30b6\u30fc\u306b\u624b\u52d5\u3067\u5f37\u5236\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002\u5b8c\u5168\u306a\u63d0\u6848\u3067\u306f\u3001\u81ea\u52d5\u7684\u306b\u5f37\u5236\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\uff09\u3002 <\/p>\n \u8981\u7d04\u3059\u308b\u3068\u3001JVM\u306f\u3001value capable class\u3067\u6b21\u306e\u69cb\u9020\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3044\u307e\u3059\u3002 <\/p>\n \n\u30af\u30e9\u30b9\u306ffinal\u3068\u30de\u30fc\u30af\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\n \u30af\u30e9\u30b9\u306f\u9069\u5207\u306a\u30af\u30e9\u30b9\u3067\u3059\uff08\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u3002\n \u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u306fObject\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\n \u975e\u9759\u7684\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u3059\u3079\u3066final\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\n Object\u30e1\u30bd\u30c3\u30c9equals\u3001hashCode\u3001\u304a\u3088\u3073toString\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u3059\u3002\nObject\u30e1\u30bd\u30c3\u30c9clone\u307e\u305f\u306ffinalize\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u305b\u3093\u3002 <\/li>\n<\/ul>\n\u3053\u308c\u3089\u306e\u69cb\u9020\u30c1\u30a7\u30c3\u30af\u306f\u3001JVM\u304cVCC\u304b\u3089DVT\u3092\u53d6\u5f97\u3057\u305f\u3068\u304d\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u305d\u306e\u5c0e\u51fa\u306e\u4f4d\u76f8\u8abf\u6574\u306b\u3064\u3044\u3066\u306f\u5f8c\u8ff0\u3059\u308b\u3002 <\/p>\n \u4e0a\u8a18\u306e\u5236\u9650\u3068\u306f\u5225\u306b\u3001value-capable class\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u3001\u30cd\u30b9\u30c8\u3055\u308c\u305f\u578b\u306e\u5b9a\u7fa9\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\u3001\u578b\u5909\u6570\u306e\u5b9a\u7fa9\u306a\u3069\u3001\u901a\u5e38\u306e\u5024\u30d9\u30fc\u30b9\u306e\u30af\u30e9\u30b9\u304c\u884c\u3046\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u7a2e\u985e\u306b\u306f\u7279\u306b\u5236\u9650\u306f\u3042\u308a\u307e\u305b\u3093\u3002 <\/p>\n \u3053\u3053\u304b\u3089\u308f\u304b\u308b\u3088\u3046\u306b\u3001derived value type \u306e\u578b\u306b\u306f\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u304c\u542b\u307e\u308c\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u305d\u308c\u304c\u5c0e\u51fa\u3055\u308c\u305fvalue-capable class\u3068\u540c\u3058\u30bb\u30c3\u30c8\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u542b\u307f\u307e\u3059\u3002 \u3057\u304b\u3057\u3001JVM\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001\u30cd\u30b9\u30c8\u3055\u308c\u305f\u578b\u3001\u307e\u305f\u306f\u30b9\u30fc\u30d1\u30fc\u578b\u3092\u63d0\u4f9b\u3057\u307e\u305b\u3093\u3002 \uff08\u5b8c\u5168\u306a\u63d0\u6848\u3067\u306f\u3001\u3082\u3061\u308d\u3093\u3001value types\u306f\u300c\u30af\u30e9\u30b9\u306e\u3088\u3046\u306b\u30b3\u30fc\u30c9\u5316\u300d\u3055\u308c\u3001\u305d\u308c\u3089\u306e\u6a5f\u80fd\u306e\u3059\u3079\u3066\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002 <\/p>\n\n\u6a19\u6e96\u306ejavac\u30b3\u30f3\u30d1\u30a4\u30e9\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305fvalue-capable class \u306f\u3001value types\u3067\u3042\u308b “inline sub-value”\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8868\u73fe\u3067\u304d\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u3067\u304d\u308b\u3060\u3051\u591a\u304f\u306e\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u306f\u3001\u95a2\u9023\u3059\u308b\u53c2\u7167\u578b\uff08 “L-types”\uff09\u306e\u8981\u6c42\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3059\u3002 javac\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3055\u308c\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u3001\u672c\u5f53\u306e “Q-types”\u306esub-value\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u306ejavac\u3092\u4f7f\u3046\u3068\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306fvalue-capable classes\u304b\u3089\u5225\u306e\u6d3e\u751f\u578b\u3092\u6d3e\u751f\u3055\u305b\u308b\u3068\u3044\u3046\u624b\u9593\u3092\u7701\u304d\u3001value types\u3092\u76f4\u63a5\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001derived value type\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304cvalue-capable class\u3068\u3057\u3066\u5165\u529b\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u610f\u56f3\u3057\u305f\u30a4\u30f3\u30e9\u30a4\u30f3sub-value\u306e\u610f\u56f3\u3057\u306a\u3044\u30dc\u30af\u30b7\u30f3\u30b0\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/blockquote>\n \u3053\u3053\u3067\u306f\u3001\u300csuper-long\u300dderived value type\u3092\u5b9a\u7fa9\u3059\u308bvalue-capable class\u306e\u3088\u308a\u5927\u304d\u306a\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n@DeriveValueType\nfinal class Int128 extends Comparable<Int128> {\n private final long x0, x1;\n private Int128(long x0, long x1) { ... }\n public static Int128 zero() { ... }\n public static Int128 from(int x) { ... }\n public static Int128 from(long x) { ... }\n public static Int128 from(long hi, long lo) { ... }\n public static long high(Int128 i) { ... }\n public static long low(Int128 i) { ... }\n \/\/ possibly array input\/output methods\n public static boolean equals(Int128 a, Int128 b) { ... }\n public static int hashCode(Int128 a) { ... }\n public static String toString(Int128 a) { ... }\n public static Int128 plus(Int128 a, Int128 b) { ... }\n public static Int128 minus(Int128 a, Int128 b) { ... }\n \/\/ more arithmetic ops, bit-shift ops\n public int compareTo(Int128 i) { ... }\n public boolean equals(Int128 i) { ... }\n public int hashCode() { ... }\n public boolean equals(Object x) { ... }\n public String toString() { ... }\n}<\/code><\/pre>\nSimilar types [Long2.java]<\/a>\u304c\u30eb\u30fc\u30d7\u30d9\u30af\u30c8\u30eb\u5316\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u4f8b\u306f\u3001java.lang\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\u3053\u306e\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306e\u4e00\u90e8\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u305fvalue-capable types \u306f\u3001\u3069\u306e\u6a19\u6e96API\u306b\u3082\u73fe\u308c\u307e\u305b\u3093\u3002 \u305d\u308c\u3089\u306e\u53ef\u8996\u6027\u306f\u3001\u30a4\u30f3\u30ad\u30e5\u30d9\u30fc\u30bf\u30e2\u30b8\u30e5\u30fc\u30eb\u306a\u3069\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u6a5f\u80fd\u3092\u4f7f\u7528\u3057\u3066\u5236\u5fa1\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3002 <\/p>\n \nInitial value-capable classes\u306f\u3001long\u306a\u3069\u306e\u6570\u5024\u578b\u306e\u62e1\u5f35\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u306e\u305f\u3081\u3001\u6a19\u6e96\u7684\u3067\u4e00\u8cab\u3057\u305f\u7b97\u8853\u6f14\u7b97\u3068\u30d3\u30c3\u30c8\u6f14\u7b97\u304c\u5fc5\u8981\u3067\u3059\u3002 \u73fe\u6642\u70b9\u3067\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u30bb\u30c3\u30c8\u306f\u4f53\u7cfb\u5316\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002 \u305d\u306e\u30bb\u30c3\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u306f\u3001\u6700\u5c0f\u30bb\u30c3\u30c8\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u3066\u3044\u307e\u3059\u3002 \u6700\u7d42\u7684\u306b\u306f\u3001\u6570\u5024\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3068\u6570\u5024\u306e\u9593\u306e\u5171\u901a\u306e\u64cd\u4f5c\u69cb\u9020\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u4e00\u9023\u306e\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/blockquote>\nSplitting the value type from the object type<\/h6>\nJVM\u304cvalue-capable class\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3068\u304d\u306b\u306f\u3001derived value type\u3092\u6d3e\u751f\u3055\u305b\u308b\u304b\u3001\u30af\u30e9\u30b9\u306b\u30d5\u30e9\u30b0\u3092\u8a2d\u5b9a\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066derived value type\u3092\u4f5c\u6210\u3059\u308b\u3088\u3046\u306b\u8abf\u6574\u3067\u304d\u307e\u3059\u3002 \uff08\u5f8c\u8005\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\uff09\u3002 <\/p>\n\n\uff08\u6ce8\u610f\uff1a\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u306f\u3001\u3053\u306e\u9806\u5e8f\u306f\u672a\u5b9a\u7fa9\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u5b8c\u5168\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u306evalue types\u3067\u306f\u3001derived value type\u3068value-capable class\u304c\u540c\u4e00\u3067\u3042\u308b\u305f\u3081\u3001\u7591\u554f\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<\/blockquote>\n value-capable class\u81ea\u4f53\u306f\u30ed\u30fc\u30c9\u6642\u306b\u307e\u3063\u305f\u304f\u5909\u66f4\u3055\u308c\u307e\u305b\u3093\u3002 \u305d\u308c\u306f\u3001value-based class\u306e\u305f\u3081\u306e\u666e\u901a\u306e “POJO”\u306e\u307e\u307e\u3067\u3059\u3002 <\/p>\n \u5bfe\u5fdc\u3059\u308bderived value type\u306f\u3001value-capable class\u306e\u30b3\u30d4\u30fc\u3068\u3057\u3066\u4f5c\u6210\u3055\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306e\u91cd\u8981\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n\nderived value type\u306f\u3001value-type\u3068\u3057\u3066\u30de\u30fc\u30af\u3055\u308c\u307e\u3059\u3002\n derived value type\u306b\u306f\u3001value-capable class\u304b\u3089\u6d3e\u751f\u3057\u305f\u65b0\u3057\u3044\u540d\u524d\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002\n value-capable class\u306e\u3059\u3079\u3066\u306e\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u304c\u524a\u9664\u3055\u308c\u307e\u3059\u3002\n value-capable class\u306e\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u3068\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u524a\u9664\u3055\u308c\u307e\u3059\u3002\nvalue-capable class \u306e\u975e\u9759\u7684\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u3001\u305d\u306e\u307e\u307e\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002 <\/li>\n<\/ul>\nDVT\u306b\u4e0e\u3048\u3089\u308c\u305f\u540d\u524d\u306f\u5b9f\u88c5\u306b\u3088\u3063\u3066\u96a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u3059\u3079\u3066\u306e\u30b1\u30fc\u30b9\u3067\u3001VCC\u306e\u540d\u524d\u306f\u4e21\u65b9\u306e\u30bf\u30a4\u30d7\u3092\u53c2\u7167\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u4e0d\u660e\u78ba\u3055\u3092\u89e3\u6c7a\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u60c5\u5831\u304c\u5e38\u306b\u5b58\u5728\u3057\u307e\u3059\u3002 \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u8a18\u8ff0\u5b50\u3067\u306f\u3001\u6587\u5b57Q\u3068L\u3092\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u306e\u3067\u3001VCC\u3092Q-type\u3068\u547c\u3073\u3001DVT\u3092L-type\u3068\u547c\u3073\u307e\u3059\u3002 <\/p>\n DVT\u306e\u4f5c\u6210\u306f\u3001VCC\u3092\u30ed\u30fc\u30c9\u3057\u305f\u5f8c\u3001DVT\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u6700\u521d\u306b\u4f5c\u6210\u3059\u308b\u524d\u306e\u3042\u308b\u6642\u70b9\u3067\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u73fe\u5728\u306e\u3044\u304f\u3064\u304b\u306e\u547d\u4ee4\uff08getstatic\u3084new\u306a\u3069\uff09\u304c\u901a\u5e38\u306e\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u3092\u30c8\u30ea\u30ac\u3059\u308b\u306e\u3068\u307b\u307c\u540c\u3058\u3088\u3046\u306b\u3001DVT\u306e\u521d\u671f\u5316\u3092\u30c8\u30ea\u30ac\u3059\u308b\u7279\u5b9a\u306e\u547d\u4ee4\u306e\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u3067\u5f37\u5236\u3055\u308c\u307e\u3059\u3002 \u8a73\u7d30\u306f\u5f8c\u8ff0\u3059\u308b\u3002 <\/p>\n DoubleComplex\u306e\u4f8b\u3067\u3082\u3046\u4e00\u5ea6\u3084\u308a\u76f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n@jvm.internal.value.DeriveValueType\npublic final class DoubleComplex {\n public final double re, im;\n ...\n double realPart() { return re; }\n}<\/code><\/pre>\nJVM\u304cDoubleComplex\u306ederived value type\u3092\u5408\u6210\u3059\u308b\u3053\u3068\u3092\u6c7a\u5b9a\u3059\u308b\u3068\u30012\u3064\u306edouble<\/code>\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u9664\u304f\u3059\u3079\u3066\u306e\u30af\u30e9\u30b9\u30e1\u30f3\u30d0\u3092\u53d6\u308a\u9664\u3044\u3066\u65b0\u3057\u3044\u30b3\u30d4\u30fc\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002 \u91cd\u5927\u306a\u3053\u3068\u306b\u3001JVM\u306f\u5185\u90e8\u306e\u9b54\u6cd5\u3092\u4f7f\u3063\u3066\u5408\u6210\u30af\u30e9\u30b9\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\u3067\u306f\u306a\u304fvalue-type\u306b\u3057\u307e\u3059\u3002 <\/p>\n JVM\u306e\u5185\u90e8\u3067\u306f\u3001\u7d50\u679c\u306ederived value type\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n@jvm.internal.value.DeriveValueType\npublic final class L-DoubleComplex {\n public final double re, im;\n ...\n double realPart() { return $value.re; }\n}\npublic static ByValue class Q-DoubleComplex {\n public final double re, im;\n}<\/code><\/pre>\n\u4eee\u60f3\u7684\u306a ByValue<\/code> \u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u3001\u53c2\u7167\u306e\u4ee3\u308f\u308a\u306bvalues\u304c\u5b9a\u7fa9\u3055\u308c\u308b\u5834\u6240\u3092\u793a\u3057\u307e\u3059\u3002 \u591a\u304f\u306e\u4f5c\u696d\u304c\u30b9\u30bf\u30c3\u30af\u306e\u4e0a\u4e0b\u306b\u884c\u308f\u308c\u308b\u307e\u3067\u3001\u305d\u306e\u3088\u3046\u306a\u3053\u3068\u306f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3067\u76f4\u63a5\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u304c\u3001\u30af\u30e9\u30b9\u30ed\u30fc\u30c9\u6642\u306b\u5b9f\u884c\u3059\u308b\u306e\u306f\u5b8c\u5168\u306b\u59a5\u5f53\u3067\u6709\u7528\u3067\u3059\u3002 <\/p>\n derived value type\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u6301\u305f\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30af\u30e9\u30b9\u306f\u5c11\u306a\u304f\u3068\u30821\u3064\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u6301\u3064\u305f\u3081\u306bJVM\u306b\u3088\u3063\u3066\u5fc5\u8981\u3068\u3055\u308c\u308b\u306e\u3067\u3001\u901a\u5e38\u306f\u3053\u308c\u304c\u554f\u984c\u306b\u306a\u308a\u307e\u3059\u3002 JVM\u306f\u3001derived value type\u306e\u5834\u5408\u306b\u3053\u308c\u3092\u8a31\u53ef\u3057\u307e\u3059\u3002 \uff08\u305d\u306e\u3088\u3046\u306a\u5236\u7d04\u306f\u3001\u4e00\u822c\u7684\u306b\u5024\u578b\u3067\u306f\u5fc5\u8981\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u305d\u306e\u30b9\u30c8\u30fc\u30ea\u30fc\u306f\u3053\u3053\u3067\u306f\u77e5\u308b\u306b\u306f\u6642\u9593\u304c\u304b\u304b\u308a\u3059\u304e\u307e\u3059\uff09\u3002 \u3044\u305a\u308c\u306e\u5834\u5408\u3067\u3082\u3001derive value type\u306f\u3001value-capable class\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u300c\u501f\u7528\u300d\u3057\u307e\u3059\u3002 \u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3002 <\/p>\n\n\u3053\u306e\u30c7\u30b6\u30a4\u30f3\u306f\u3001JVM\u304c\u30dc\u30c3\u30af\u30b9\u30bf\u30a4\u30d7\u306e\u307f\u3092\u30ed\u30fc\u30c9\u3057\u3001\u4f55\u3089\u304b\u306e\u5f62\u3067\u526f\u4f5c\u7528\u3068\u3057\u3066value-type\u3092\u4f5c\u6210\u3059\u308b\u3068\u3044\u3046\u70b9\u3067\u3001\u300c\u30dc\u30c3\u30af\u30b9\u30d5\u30a1\u30fc\u30b9\u30c8\u300d\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u3088\u308a\u81ea\u7136\u306a “value-first”\u306e\u8a2d\u8a08\u306b\u7d42\u308f\u308a\u307e\u3059\u304c\u3001\u73fe\u5728\u306e\u30dc\u30c3\u30af\u30b9\u30d5\u30a1\u30fc\u30b9\u30c8\u30c7\u30b6\u30a4\u30f3\u306f\u3001JVM\u3084javac\u3092\u542b\u3080\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u30c4\u30fc\u30eb\u306b\u306f\u307b\u3068\u3093\u3069\u5236\u7d04\u304c\u3042\u308a\u307e\u305b\u3093\u3002 \u3060\u304b\u3089\u6700\u521d\u306f\u5384\u4ecb\u306a\u3053\u3068\u304c\u6b63\u3057\u3044\u9078\u629e\u3067\u3059\u3002<\/p>\n<\/blockquote>\n Boxing, unboxing, and borrowing<\/h6>\nJVM\u306f\u3001\u30dc\u30ea\u30e5\u30fc\u30df\u30f3\u30b0\u53ef\u80fd\u30af\u30e9\u30b9\u3068\u305d\u306evalue-capable class\u306e\u9593\u3067\u5909\u63db\u3059\u308b\u30dc\u30af\u30b7\u30f3\u30b0\u304a\u3088\u3073\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u64cd\u4f5c\u3092\u5185\u90e8\u7684\u306b\u6574\u7406\u3057\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u64cd\u4f5c\u306e\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u306f\u30012\u3064\u306e\u30bf\u30a4\u30d7\u9593\u306e\u5358\u7d14\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u30ef\u30a4\u30ba\u30b3\u30d4\u30fc\u3067\u3059\u3002 \u3053\u308c\u306f\u660e\u3089\u304b\u306b\u30d5\u30a3\u30fc\u30eb\u30c9\u30ea\u30b9\u30c8\u304c\u540c\u4e00\u3067\u3042\u308b\u305f\u3081\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059 <\/p>\n \u5408\u6210unbox\u64cd\u4f5c\u306b\u3088\u308a\u3001derived value type\u306f\u3001value-capable class\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u9593\u63a5\u7684\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30d7\u30ed\u30b0\u30e9\u30de\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u4f7f\u7528\u3057\u3066\u30dc\u30c3\u30af\u30b9\u3092\u4f5c\u6210\u3057\u3001\u305d\u308c\u3092unbox\u3057\u3066\u5e0c\u671b\u3059\u308b\u69cb\u7bc9\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 JVM\u306f\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30dc\u30c3\u30af\u30b9\u306e\u5916\u306b\u30b3\u30d4\u30fc\u3057\u3001\u30dc\u30c3\u30af\u30b9\u3092\u7834\u68c4\u3057\u307e\u3059\u3002 \uff08\u5b8c\u5168\u306a\u63d0\u6848\u3067\u306f\u3001value types\u306f\u5b9f\u969b\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u6301\u3061\u3001\u30dc\u30c3\u30af\u30b9\u304b\u3089\u305d\u308c\u3089\u3092\u501f\u308a\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u3002 <\/p>\n \u5408\u6210\u30dc\u30c3\u30af\u30b9\u64cd\u4f5c\u3067\u306f\u3001derived value type\u304cvalue-capable class\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u9593\u63a5\u7684\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30d7\u30ed\u30b0\u30e9\u30de\u306fvalue\u3092\u4e00\u6642\u7684\u306b\u30dc\u30c3\u30af\u30b9\u306b\u5165\u308c\u3001\u30e1\u30bd\u30c3\u30c9\u304c\u5fa9\u5e30\u3059\u308b\u3068\u30dc\u30c3\u30af\u30b9\u3092\u7834\u68c4\u3057\u3066\u3001value-capable class\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u3044\u305a\u308c\u304b\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30dc\u30c3\u30af\u30b9\u306e\u5bff\u547d\u306f\u77ed\u3044\u306e\u3067\u3001\u5c11\u306a\u304f\u3068\u3082\u5358\u7d14\u306a\u65b9\u6cd5\u3067\u306f\u3001JVM\u304c\u305d\u308c\u3092\u6700\u9069\u5316\u3067\u304d\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \uff08\u5b8c\u5168\u306a\u63d0\u6848\u3067\u306f\u3001value types\u306f\u5b9f\u969b\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3061\u3001\u30dc\u30c3\u30af\u30b9\u304b\u3089\u501f\u7528\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001values\u304b\u3089\u305d\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u501f\u308a\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff09\u3002 <\/p>\n \u5408\u6210\u30dc\u30c3\u30af\u30b9\u64cd\u4f5c\u3067\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u5b9f\u884c\u305b\u305a\u306bvalue-capable class \u306e\u65b0\u3057\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002 \u901a\u5e38\u3001\u3053\u308c\u306f\u554f\u984c\u3067\u3059\u304c\u3001\u3053\u306e\u5834\u5408\u30012\u3064\u306e\u30af\u30e9\u30b9\u306f\u975e\u5e38\u306b\u5bc6\u63a5\u306b\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u6b63\u3057\u304f\u69cb\u7bc9\u3055\u308c\u305f\u30dc\u30c3\u30af\u30b9\u3092\u30a2\u30f3\u30dc\u30c3\u30af\u30b9\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\uff08\u6700\u521d\u306f\uff09\u4efb\u610f\u306evalue\u304c\u4f5c\u6210\u3055\u308c\u305f\u3068\u898b\u306a\u3059\u3053\u3068\u306f\u5b89\u5168\u3067\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u4efb\u610f\u306e\u7279\u5b9a\u306evalue\u306b\u5bfe\u3057\u3066\u6700\u521d\u306e\u5358\u8a9e\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002 \u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u3068\u30dc\u30af\u30b7\u30f3\u30b0\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30b7\u30ea\u30a2\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u3068\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002 \u4e21\u65b9\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u3001\u7b2c2\u306e\u64cd\u4f5c\u306f\u3001\u901a\u5e38\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u69cb\u7bc9\u3092\u30d0\u30a4\u30d1\u30b9\u3057\u307e\u3059\u3002 <\/p>\n \u5408\u6210\u30dc\u30c3\u30af\u30b9\u64cd\u4f5c\u306f\u307e\u305f\u3001derived value type\u304cvalue-capable class\u306e\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u9593\u63a5\u7684\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3059\u308b\u3002 \u3053\u3053\u3067\u3082\u3001derived value type\u3092\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u304c\u5fc5\u8981\u306a\u3069\u3053\u304b\u306b\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u306f\u5358\u306b\u305d\u308c\u3092\u56f2\u307f\u3001\u30dc\u30c3\u30af\u30b9\u3078\u306e\u53c2\u7167\u3092\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \uff08\u5b8c\u5168\u306a\u63d0\u6848\u3067\u306f\u3001\u76ee\u306b\u898b\u3048\u308b\u30dc\u30af\u30b7\u30f3\u30b0\u304c\u306a\u304f\u3066\u3082\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u578b\u3092\u4ecb\u3057\u3066values\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3059\u308b\u3064\u3082\u308a\u3067\u3059\u3002 values\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u76f4\u63a5\u306e\u95a2\u4fc2\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u306f\u614e\u91cd\u306a\u4f5c\u696d\u304c\u5fc5\u8981\u3067\u3059\u3002 <\/p>\n \u6700\u5f8c\u306b\u3001\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30d5\u30a3\u30fc\u30eb\u30c9\u306fderived value type\u306b\u30b3\u30d4\u30fc\u3055\u308c\u306a\u3044\u306e\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306f\u5143\u306evalue-capable class\u3067\u3042\u308b\u30dc\u30c3\u30af\u30b9\u304b\u3089\u306e\u307f\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002 <\/p>\n Scoping of these features<\/h5>\n\u5b9f\u9a13\u7684\u306a\u30ea\u30ea\u30fc\u30b9\u3092\u63d0\u4f9b\u3067\u304d\u308b\u3053\u3068\u306e\u91cd\u8981\u306a\u90e8\u5206\u306f\u3001\u6a5f\u80fd\u3092\u5b9f\u9a13\u7684\u306a\u3082\u306e\u3068\u3057\u3066\u30de\u30fc\u30af\u3057\u3001\u5909\u66f4\u306e\u5bfe\u8c61\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002 \u3053\u306e\u6587\u66f8\u3067\u8868\u73fe\u3055\u308c\u3066\u3044\u308b\u30a2\u30a4\u30c7\u30a2\u306f\u304b\u306a\u308a\u3046\u307e\u304f\u713c\u304d\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u5b9f\u9a13\u7684\u306a\u30ea\u30ea\u30fc\u30b9\u3068\u5b8c\u5168\u306aValhalla\u30ea\u30ea\u30fc\u30b9\u306e\u9593\u3067\u5909\u66f4\u3055\u308c\u308b\u53ef\u80fd\u6027\u306f\u5b8c\u5168\u306b\u4e88\u898b\u3055\u308c\u307e\u3059\u3002 <\/p>\n JVM\u306e\u5358\u4e00\u30d0\u30fc\u30b8\u30e7\u30f3\u5185\u3067\u306f\u3001\u5b9f\u9a13\u7684\u6a5f\u80fd\u306fJVM\u306e\u521d\u671f\u30e2\u30b8\u30e5\u30fc\u30eb\u5c64\u306b\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30af\u30e9\u30b9\u307e\u305f\u306f\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u9078\u629e\u3055\u308c\u305f\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u5236\u9650\u3055\u308c\u3001\u305d\u306e\u4ed6\u306e\u70b9\u3067\u306f\u7121\u8996\u3055\u308c\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001value-capable modules<\/em>\u3068\u547c\u3070\u308c\u307e\u3059\u3002 <\/p>\n \u3055\u3089\u306b\u3001\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u306e\u6a5f\u80fd\u306f\u300153.1\u306a\u3069\u306e\u7279\u5b9a\u306e\u30e1\u30b8\u30e3\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u304a\u3088\u3073\u30de\u30a4\u30ca\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3067\u306e\u307f\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u305d\u306e\u5834\u5408\u3001JVM\u30af\u30e9\u30b9\u30ed\u30fc\u30c0\u306f\u3001\u305d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u30af\u30e9\u30b9\u304c\u30d0\u30ea\u30e5\u30fc\u53ef\u80fd\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u306e\u307f\u30ed\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u3053\u3053\u3067\u63d0\u6848\u3055\u308c\u3066\u3044\u308b\u5b9f\u9a13\u7684\u306a\u62e1\u5f35\u6a5f\u80fd\u306e\u691c\u8a3c\u304a\u3088\u3073\u30ed\u30fc\u30c9\u6642\u306b\u306f\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u306e\u307f\u3092\u53c2\u7167\u3057\u307e\u3059\u3002 \u4e00\u90e8\u306e\u30de\u30a4\u30ca\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u5b9f\u9a13\u7684\u306a\u6a5f\u80fd\u306e\u307f\u306b\u4f7f\u7528\u3055\u308c\u3001\u5b9f\u7a3c\u50cd\u4ed5\u69d8\u306b\u306f\u73fe\u308c\u307e\u305b\u3093\u3002 <\/p>\n \u3053\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306e\u4efb\u610f\u306e\u6a5f\u80fd\u306e\u4efb\u610f\u306e\u90e8\u5206\u306e\u4f7f\u7528\u306f\u3001value-capable module\u306e\u30af\u30e9\u30b9\u304b\u3089\u767a\u751f\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002 JVM\u306f\u3001non-value-capable modules\u304b\u3089\u306e\u8a66\u884c\u3092\u81ea\u7531\u306b\u691c\u51fa\u3057\u3066\u62d2\u5426\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 @DeriveValueType\u306e\u3088\u3046\u306a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u6697\u9ed9\u306e\u3046\u3061\u306b\u7121\u8996\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3057\u304b\u3057\u3001\u3053\u306e\u4ed5\u69d8\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306e\u5b9f\u88c5\u3067\u306f\u3001\u305d\u306e\u3088\u3046\u306a\u4f7f\u7528\u6cd5\u306e\u30c1\u30a7\u30c3\u30af\u304c\u7701\u7565\u3055\u308c\u3001\u52d5\u4f5c\u3059\u308b\uff08\u307e\u305f\u306f\u5c11\u306a\u304f\u3068\u3082\u9069\u5207\u306a\u30a8\u30e9\u30fc\u3092\u30b9\u30ed\u30fc\u3057\u306a\u3044\uff09\u3088\u3046\u3067\u3059\u3002 \u305d\u306e\u3088\u3046\u306a\u975e\u62d2\u7d76\u306f\u30d0\u30b0\u3067\u3042\u308a\u3001\u62db\u5f85\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 <\/p>\nValue descriptors<\/h4>\nvalue-capable modules\u3067\u306f\u3001\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u8a18\u8ff0\u5b50\u8a00\u8a9e\u304c\u3001\u30dc\u30c3\u30af\u30b9\u5316\u3055\u308c\u3066\u3044\u306a\u3044value types\u3092\u76f4\u63a5\u793a\u3059Q-types\u3092\u542b\u3080\u3088\u3046\u306b\u62e1\u5f35\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u8a18\u8ff0\u5b50\u306e\u69cb\u6587\u306f “QBinaryName;”\u3067\u3059\u3002 \u3053\u3053\u3067\u3001BinaryName\u306fVCC\u540d\u306e\u5185\u90e8\u5f62\u5f0f\u3067\u3059\u3002 \u5b9f\u969b\u306b\u306f\u3001\u30af\u30e9\u30b9\u540d\u306f\u3001value-capable class\u304b\u3089\u6d3e\u751f\u3057\u305fvalue type\u306e\u3082\u306e\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002 <\/p>\n \u6bd4\u8f03\u3059\u308b\u3068\u3001\u6a19\u6e96\u306e\u53c2\u7167\u578b\u8a18\u8ff0\u5b50\u306fL-type\u3068\u547c\u3070\u308c\u307e\u3059\u3002 value-capable classC\u306b\u3064\u3044\u3066\u306f\u3001Q-type\u3068L-type\u306e\u4e21\u65b9\u306eC\u8a00\u8a9e\u306b\u3064\u3044\u3066\u8a00\u53ca\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u3002 L-types\u306e\u4f7f\u7528\u306f\u3001Q-types\u306e\u4f7f\u7528\u3068\u6c7a\u3057\u3066\u95a2\u9023\u3057\u306a\u3044\u3053\u3068\u306b\u7559\u610f\u3055\u308c\u305f\u3044\u3002 \u305f\u3068\u3048\u3070\u3001\u305d\u308c\u3089\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u30bf\u30a4\u30d7\u3001\u4efb\u610f\u306e\u6df7\u5408\u7269\u3067\u4e00\u7dd2\u306b\u8868\u793a\u3067\u304d\u307e\u3059\u3002 <\/p>\n Q-type\u8a18\u8ff0\u5b50\u306f\u3001value-capable module\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u30af\u30e9\u30b9\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u578b\u3068\u3057\u3066\u73fe\u308c\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\u540c\u3058\u8a18\u8ff0\u5b50\u306f\u3001\u305d\u306e\u53c2\u7167\u304c4\u3064\u306egetfield\u30d5\u30a1\u30df\u30ea\u306e\u547d\u4ee4\u306e\u3046\u3061\u306e1\u3064\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u308b\u3068\u304d\u306b\u3001\u305d\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u53c2\u7167\uff08CONSTANT_Fieldref\uff09\u306b\u8868\u793a\u3055\u308c\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08value-capable module\u3067\u3042\u3063\u3066\u3082\uff09\u3002 <\/p>\n \n\uff08\u4ee5\u4e0b\u306b\u8aac\u660e\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u30d5\u30a1\u30af\u30c8\u30ea\u306f\u3001values\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e21\u65b9\u3067\u30d5\u30a3\u30fc\u30eb\u30c9\u30ed\u30fc\u30c9\u3068\u66f4\u65b0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u304c\u3001\u3053\u306e\u63d0\u6848\u3067\u306f\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u547d\u4ee4\u81ea\u4f53\u306f\u5909\u66f4\u3055\u308c\u3066\u3044\u307e\u305b\u3093\uff09\u3002<\/p>\n<\/blockquote>\n Q-type\u8a18\u8ff0\u5b50\u306f\u3001value-capable module\u306e\u30af\u30e9\u30b9\u306e\u914d\u5217\u8981\u7d20\u578b\u3068\u3057\u3066\u73fe\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \uff08\u3053\u308c\u306f\u307e\u305f\u3001value-capable module\u3068\u3001\u304a\u305d\u3089\u304f\u7279\u5b9a\u306e\u5b9f\u9a13\u7684\u306a\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u4e2d\u306b\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5236\u9650\u306f\u30d6\u30e9\u30f3\u30b1\u30c3\u30c8\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3068\u3057\u3066\u65e2\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u308c\u3092\u7e70\u308a\u8fd4\u3055\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\uff09 \u3053\u308c\u3089\u306e\u914d\u5217\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3067\u306f\u3053\u308c\u3089\u306e\u95a2\u6570\u3067\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 <\/p>\n Q-type\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u307e\u305f\u306f\u914d\u5217\u306f\u3001null\u3067\u306f\u306a\u304f\u305d\u306evalue type\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306b\u521d\u671f\u5316\u3055\u308c\u307e\u3059\u3002 \u3053\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u3059\u3079\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3067\u3042\u308b\u3059\u3079\u3066\u306e\u5024\u3068\u3057\u3066\uff08\u5c11\u306a\u304f\u3068\u3082\u73fe\u5728\u306f\uff09\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u305d\u306e\u3088\u3046\u306a\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u3001 MethodHandles.empty<\/code> \u30b3\u30f3\u30d3\u30cd\u30fc\u30bf\u306a\u3069\u306e\u9069\u5207\u306a\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u304b\u3089\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 <\/p>\n \n\u3064\u307e\u308a\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f\u3001\u65e2\u5b58\u306e\u578b\u56fa\u6709\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024null\u3001false\u3001\u00a50,0\u3001\u304a\u3088\u30730.0\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u69cb\u7bc9\u3055\u308c\u307e\u3059\u3002 \u3059\u3079\u3066\u306eJava\u30d2\u30fc\u30d7\u5909\u6570\u306f\u3001values\u3092\u542b\u3080\u3053\u308c\u3089\u306e\u30bc\u30ed\u30c7\u30fc\u30bf\u306b\u521d\u671f\u5316\u3055\u308c\u307e\u3059\u3002 \u305d\u3046\u3067\u306a\u3044\u3001\u307e\u305f\u306f\u5c11\u306a\u304f\u3068\u3082\u5c06\u6765\u7684\u306b\u306f\uff09<\/p>\n<\/blockquote>\n Q-type\u8a18\u8ff0\u5b50\u306f\u3001\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u307e\u305f\u306f\u623b\u308a\u578b\u3068\u3057\u3066\u73fe\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u5f8c\u8ff0\u3059\u308b\u3088\u3046\u306b\u3001\u691c\u8a3c\u8005\u306f\u3001\u305d\u306e\u3088\u3046\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u307e\u305f\u306f\u623b\u308a\u5024\u306e\u5bfe\u5fdc\u3059\u308b\u7a4d\u307f\u91cd\u306d\u3089\u308c\u305fvalue\u3092Q-type\uff08\u5bfe\u5fdc\u3059\u308bL-type\u307e\u305f\u306f\u4ed6\u306e\u30bf\u30a4\u30d7\u3067\u306f\u306a\u3044\uff09\u306b\u4e00\u81f4\u3055\u305b\u308b\u3088\u3046\u306b\u5f37\u5236\u3059\u308b\u3002 <\/p>\n \u3069\u306e\u30e1\u30bd\u30c3\u30c9\u53c2\u7167\uff08\u5b9a\u6570\u30bf\u30b0\u4ed8\u304d CONSTANT_Methodref<\/code> \u307e\u305f\u306f CONSTANT_InterfaceMethodref <\/code>\uff09\u306f\u3001\u305d\u306e\u8a18\u8ff0\u5b50\u306eQ-types\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u5b9a\u6570\u306e\u89e3\u6c7a\u5f8c\u3001\u305d\u306e\u3088\u3046\u306a\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u306f\u30cd\u30a4\u30c6\u30a3\u30d6\u3067\u306f\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u65b0\u3057\u3044\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066Q-typed values\u3092\u76f4\u63a5\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u540c\u69d8\u306b\u3001 CONSTANT_Fieldref<\/code> \u5b9a\u6570\u306f\u3001\u305d\u306e\u8a18\u8ff0\u5b50\u306bQ-type\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n Java\u8a00\u8a9e\u306f\u3001\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306eQ-types\u306b\u76f4\u63a5\u8a00\u53ca\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u3057\u304b\u3057\u306a\u304c\u3089\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u751f\u6210\u5668\u306f\u305d\u306e\u3088\u3046\u306a\u578b\u3092\u8a00\u53ca\u3057\u3066\u305d\u308c\u3089\u3068\u5354\u50cd\u3059\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002 Valhalla\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304cQ-types\u3067\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306b\u5b9f\u9a13\u7684\u306a\u8a00\u8a9e\u6a5f\u80fd\u304c\u4f5c\u6210\u3055\u308c\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002 <\/p>\n Constant pool and instruction linkage<\/h4>\n\u79c1\u305f\u3061\u306evalue types\u306f\u53c2\u7167\u578b\u306e\u3088\u3046\u306a\u540d\u524d\u3068\u30e1\u30f3\u30d0\u3092\u6301\u3061\u307e\u3059\u304c\u3001\u3059\u3079\u3066\u306e\u53c2\u7167\u578b\u3068\u306f\u7570\u306a\u308b\u306e\u3067\u3001\u3044\u304f\u3064\u304b\u306e\u5b9a\u6570\u30d7\u30fc\u30eb\u69cb\u9020\u3092\u62e1\u5f35\u3057\u3066Q-types\u3068\u76f8\u4e92\u904b\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u5f53\u7136\u306e\u3053\u3068\u306a\u304c\u3089\u3001\u8a18\u8ff0\u5b50\u306e\u69cb\u6587\u3092\u62e1\u5f35\u3057\u305f\u7d50\u679c\u3001\u30e1\u30bd\u30c3\u30c9\u3068\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u8a18\u8ff0\u5b50\u306fQ-types\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u3092\u884c\u3046\u306b\u306f\u3001\u5b9a\u6570\u30d7\u30fc\u30eb\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u5909\u66f4\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002 <\/p>\n \u3057\u304b\u3057\u3001\u5b9a\u6570\u30d7\u30fc\u30eb\u306e\u578b\u306e\u4e2d\u306b\u306f\u3001\u901a\u5e38\u306e\u8a18\u8ff0\u5b50\u30a8\u30f3\u30d9\u30ed\u30fc\u30d7\u6587\u5b57\uff08L\u306e\u524d\u3068\u5f8c\u308d\uff09\u306e\u306a\u3044\u300c\u751f\u306e\u300d\u30af\u30e9\u30b9\u540d\u304c\u3042\u308b\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002 \u5177\u4f53\u7684\u306b\u306f\u3001CONSTANT_Class<\/code> \u5b9a\u6570\u306f\u3001\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\uff08\u6c7a\u5b9a\u306e\u5f8c\u3067\uff09\u76f4\u63a5\u30ea\u30f3\u30af\u3059\u308b\u306e\u3067\u3001\u305d\u308c\u306b\u95a2\u4fc2\u3059\u308b\u30df\u30e9\u30fc\u306f\u660e\u3089\u304b\u306b\u305d\u306e\u30af\u30e9\u30b9\u306e\u4e3b\u8981\u306a\u30df\u30e9\u30fc\u3067\u3059\u3002 \u30bb\u30ab\u30f3\u30c0\u30ea\u30df\u30e9\u30fc\u306b\u3064\u3044\u3066\u8a00\u53ca\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u884c\u3046\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f <\/p>\n ldc<\/code> \u307e\u305f\u306f ldc_w<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3068\u3068\u3082\u306b\u4f7f\u7528\u3055\u308c\u308b\u5834\u5408\u3001\u307e\u305f\u306f\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7\u30fb\u30e1\u30bd\u30c3\u30c9\u306e\u9759\u7684\u5f15\u6570\u3068\u3057\u3066\u3001\u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u305f\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3067\u59cb\u307e\u308b CONSTANT_Class<\/code> \u304c\u89e3\u6c7a\u3055\u308c\u305f\u30af\u30e9\u30b9\u306e\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb Class<\/code> \u30df\u30e9\u30fc\u306b\u89e3\u6c7a\u3055\u308c\u307e\u3059\u3002 \u30bb\u30ab\u30f3\u30c0\u30ea\u30df\u30e9\u30fc\u306f\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u4e00\u822c\u7684\u306a CONSTANT_Dynamic<\/code> f\u30d5\u30a9\u30fc\u30e0\uff08\u5225\u306e\u63d0\u6848JDK-8177279<\/a>\uff09\u3092\u4f7f\u7528\u3057\u3066\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002 <\/p>\n CONSTANT_Methodref <\/code>\u307e\u305f\u306f CONSTANT_Fieldref<\/code> \u5b9a\u6570\u306e\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001CONSTANT_Class<\/code> \u306f\u5e38\u306b\u7279\u5b9a\u306e\u300c\u30d3\u30e5\u30fc\u300d\u306b\u5411\u304b\u3063\u3066\u300c\u50be\u659c\u300d\u3059\u308b\u3053\u3068\u306a\u304f\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u81ea\u4f53\u3092\u8868\u3057\u307e\u3059\u3002 \u30d5\u30a3\u30fc\u30eb\u30c9\u53c2\u7167\u307e\u305f\u306f\u30e1\u30bd\u30c3\u30c9\u53c2\u7167\u3092\u4f7f\u7528\u3059\u308b\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306f\u3001\u30ec\u30b7\u30fc\u30d0\u30fc\u304cQ-type\u304bL-type\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002 \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u3053\u306e\u300c\u50be\u304d\u300d\u306f\u30e2\u30fc\u30c9\u3068\u3057\u3066\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3001\u6a19\u6e96 getfield<\/code> \u547d\u4ee4\u306fL-mode\u547d\u4ee4\u3067\u3042\u308a\u3001vgetfield<\/code> \u547d\u4ee4\u306fQ-mode\u547d\u4ee4\u3067\u3042\u308b\u3002 <\/p>\n \n\uff08\u6ce8\uff1a\u3053\u306e\u300c\u4e0d\u53ef\u77e5\u8ad6\u7684\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u30e1\u30bd\u30c3\u30c9\u53c2\u7167\u306e\u8a2d\u8a08\u306f\u3001JVM\u304cCONSTANT_Fieldref\u304cgetfield\u3068vgetfield\u306e\u4e21\u65b9\u306e\u547d\u4ee4\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u5b9a\u6570\u30d7\u30fc\u30eb\u30a8\u30f3\u30c8\u30ea\u306b\u5341\u5206\u306a\u30ea\u30bd\u30fc\u30b9\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 \u540c\u3058\u30af\u30e9\u30b9\u306e\u30dc\u30c3\u30af\u30b9\u5316\u3055\u308c\u305f L-values\u3068\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3055\u308c\u305fQ-values\u306e\u30e1\u30e2\u30ea\u30ec\u30a4\u30a2\u30a6\u30c8\u3002 \u30e1\u30bd\u30c3\u30c9\u53c2\u7167\u306b\u3082\u540c\u69d8\u306e\u70b9\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u306e\u8abf\u6574\u306f\u3001\u305d\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u898f\u5f8b\u3068ID\u7ba1\u7406\u3092\u9664\u304d\u3001\u76f8\u4e92\u306b\u5185\u90e8\u7684\u306b\u985e\u4f3c\u3057\u305fQ-type\u3068L-type values\u3092\u4f5c\u308a\u3001JVM\u306e\u5b9f\u88c5\u306b\u6df1\u3044\u5f71\u97ff\u529b\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u7279\u306b\u3082\u3057U-types\u304c\u5c06\u6765\u3042\u308b\u6642\u70b9\u3067\u69cb\u60f3\u306b\u52a0\u3048\u3089\u308c\u3066\u3044\u308b\u306a\u3089\u3001\u3053\u308c\u306f\u826f\u3044\u3053\u3068\u3067\u3042\u308b\u3088\u3046\u306b\u601d\u308f\u308c\u307e\u3059\u3002<\/p>\n<\/blockquote>\n MethodHandles.Lookup<\/code> API\u306e\u5834\u5408\u3001Q-type\u3068L-type\uff08\u3057\u305f\u304c\u3063\u3066\u547c\u3073\u51fa\u3057\u30e2\u30fc\u30c9\uff09\u306e\u533a\u5225\u306f\u3001Lookup.findGetter <\/code>\u306a\u3069\u306eAPI\u547c\u3073\u51fa\u3057\u306e\u6700\u521d\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3055\u308c\u308b Class<\/code> \u30df\u30e9\u30fc\u306b\u3088\u3063\u3066\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 findGetter<\/code> \u304cQ-type\u306e\u30bb\u30ab\u30f3\u30c0\u30ea\u30fc\u30df\u30e9\u30fc\u3092\u6e21\u3059\u3068\u3001\u30d0\u30a4\u30ca\u30ea\u30fc\u30fb\u30df\u30e9\u30fc\u306fby-value\u306e\u30ec\u30b7\u30fc\u30d0\u30fc\u304b\u3089\u30d5\u30a3\u30fc\u30eb\u30c9\u30fb\u30b2\u30c3\u30bf\u30fc\u3092\u8fd4\u3057\u307e\u3059\u3002 \u305d\u308c\u304c\u30d7\u30e9\u30a4\u30de\u30ea\u30df\u30e9\u30fc\uff08L-type\uff09\u3092\u6e21\u3055\u308c\u305f\u5834\u5408\u3001\u5f53\u7136\u306e\u3053\u3068\u306a\u304c\u3089\u3001\u53c2\u7167\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u30b2\u30c3\u30bf\u30fc\u3092\u4eca\u65e5\u306e\u3088\u3046\u306b\u8fd4\u3057\u307e\u3059\u3002 <\/p>\nRestrictions on Q-mode method calls<\/h5>\nQ-mode\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\uff08Q-type\u30ec\u30b7\u30fc\u30d0\u3092\u4f7f\u7528\uff09\u3092\u5b9f\u884c\u3059\u308b\u5834\u5408\u3001java.lang.Object<\/code> \u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3069\u308c\u3082\u73fe\u308c\u307e\u305b\u3093\u3002 JVM\u307e\u305f\u306f\u30e1\u30bd\u30c3\u30c9\u30fb\u30cf\u30f3\u30c9\u30eb\u30fb\u30e9\u30f3\u30bf\u30a4\u30e0\u306f\u3001\u3053\u308c\u3092\u5b9f\u65bd\u3059\u308b\u305f\u3081\u306b\u7279\u5225\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30fb\u30ed\u30b8\u30c3\u30af\u3092\u5fc5\u8981\u3068\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u8a00\u3044\u66ff\u3048\u308c\u3070\u3001Q-types\u306f Object <\/code>\u304b\u3089\u7d99\u627f\u3057\u307e\u305b\u3093\u3002 \u4ee3\u308f\u308a\u306b\u3001value-based classes\u306e\u30eb\u30fc\u30eb\u3068\u540c\u69d8\u306eObject\u30e1\u30bd\u30c3\u30c9\u3092\u7f6e\u304d\u63db\u3048\u308b\u72ec\u81ea\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u304b\u3001Object<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u5b8c\u5168\u306b\u56de\u907f\u3057\u307e\u3059\u3002 <\/p>\n \u4f8b\u5916\u3068\u3057\u3066\u3001Object.getClass<\/code> \u30e1\u30bd\u30c3\u30c9\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001VCC\u306b\u5bfe\u5fdc\u3059\u308bprincpal Class<\/code> \u30df\u30e9\u30fc\u3092\u8fd4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n\n\u3053\u3053\u3067\u306e\u7406\u8ad6\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u578b\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u30af\u30e9\u30b9\u30df\u30e9\u30fc\u3092getClass\u304c\u5831\u544a\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002 \u3053\u306e\u7406\u8ad6\u306f\u5909\u308f\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n<\/blockquote>\n \u3053\u308c\u3089\u306e\u5236\u9650\u306f\u3001Q-types\u304b\u3089\u5f97\u3089\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3001\u304a\u3088\u3073 vinvoke<\/code> \u547d\u4ee4\uff08\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u5834\u5408\uff09\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002 <\/p>\nJVM changes to support Q-types<\/h5>\nQ-types\u306f\u3001\u4ed6\u306e\u578b\u8a18\u8ff0\u5b50\u578b\u3068\u540c\u69d8\u306b\u3001\u591a\u304f\u306e\u5834\u6240\u3067\u8a00\u53ca\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u57fa\u672c\u7684\u306a\u30ea\u30b9\u30c8\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/p>\n\n\u30e1\u30bd\u30c3\u30c9\u3068\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5b9a\u7fa9\uff08method_info<\/code> \u69cb\u9020\u4f53\u3068 field_info<\/code> \u69cb\u9020\u4f53\u306eUTF8\u53c2\u7167\uff09\n \u30e1\u30bd\u30c3\u30c9\u3068\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30b7\u30f3\u30dc\u30ea\u30c3\u30af\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\uff08CONSTANT_NameAndType<\/code>\u306eUTF8\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\uff09\n \u578b\u540d\uff08CONSTANT_Class<\/code> \u5b9a\u6570\u306eUTF8\u53c2\u7167\uff09\n \u914d\u5217\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u578b\uff08\u4efb\u610f\u306e\u8a18\u8ff0\u5b50\u306e\u5de6\u62ec\u5f27 [ <\/code>\u306e\u5f8c\uff09\n \u30d9\u30ea\u30d5\u30a1\u30a4\u30a2\u30b9\u30bf\u30c3\u30af\u30de\u30c3\u30d7\u306e\u30bf\u30a4\u30d7\uff08Q-types\u306e\u65b0\u3057\u3044\u30a2\u30a4\u30c6\u30e0\u30b3\u30fc\u30c9\u7d4c\u7531\uff09\n\u3044\u304f\u3064\u304b\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u30aa\u30da\u30e9\u30f3\u30c9\uff08CONSTANT_Class<\/code>\uff09\uff08\u5f8c\u8ff0\uff09 <\/li>\n<\/ul>\nJVM\u306f\u3001\u591a\u304f\u306e\u5b9f\u884c\u30d1\u30b9\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u3092\u5358\u7d14\u5316\u3059\u308b\u305f\u3081\u306b\u3001Q-types\u306e\u4e0d\u53ef\u8996\u30dc\u30af\u30b7\u30f3\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3082\u3061\u308d\u3093\u3001\u30d2\u30fc\u30d7\u5185\u306e\u30c7\u30fc\u30bf\u306e\u30d5\u30e9\u30c3\u30c8\u5316\u3068\u3044\u3046values\u306e\u30ad\u30fc\u5024\u306e\u63d0\u6848\u306b\u53cd\u3059\u308b\u3082\u306e\u3067\u3059\u3002 <\/p>\n \u6700\u5c0f\u9650\u306e\u30e2\u30c7\u30eb\u3067\u306f\u3001\u914d\u5217\u8981\u7d20\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08\u307e\u305f\u306f\u5024\uff09\u30d5\u30a3\u30fc\u30eb\u30c9\u306eQ-types\u306e\u7279\u5225\u306a\u51e6\u7406\u3001\u5c11\u306a\u304f\u3068\u3082\u305d\u306e\u3088\u3046\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u3092Q-types\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306b\u521d\u671f\u5316\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u7279\u5225\u306a\u51e6\u7406\u304c\u5fc5\u8981\u3067\u3059\uff08\u65e2\u5b9a\u5024\u3067\u306f\u306a\u3044\uff09 L-type\u306e null<\/code>\u3002 <\/p>\n \u3057\u305f\u304c\u3063\u3066\u3001\u30af\u30e9\u30b9\u30ed\u30fc\u30c0\u30fc\u304c\u30d5\u30a3\u30fc\u30eb\u30c9\u304cQ-types\u3067\u3042\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3068\u304d\u306f\u3001\u305d\u308c\u3089\u306eQ-types\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u542b\u3093\u3067\u3044\u308b\u65b0\u3057\u3044\u30af\u30e9\u30b9\u3092\u8a2d\u8a08\u3059\u308b\u305f\u3081\u306b\u305d\u308c\u3089\u306eQ-type\u306e\u30af\u30e9\u30b9\u3068Q-type\u5b9a\u7fa9\u306b\u3064\u3044\u3066\u5341\u5206\u554f\u5408\u305b\u60c5\u5831\u3092\u78ba\u8a8d\u3057\u3066\u30ed\u30fc\u30c9\u3057\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002 \u3053\u306e\u60c5\u5831\u306f\u3001\u5c11\u306a\u304f\u3068\u3082\u578b\u306e\u30b5\u30a4\u30ba\u3092\u542b\u307f\u3001\u6700\u7d42\u7684\u306b\u306fQ-type\u306b\u542b\u307e\u308c\u308b\u6574\u5217\u3055\u308c\u305f\u53c2\u7167\u304a\u3088\u3073\u7ba1\u7406\u3055\u308c\u305f\u53c2\u7167\u306e\u30de\u30c3\u30d7\u3092\u542b\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u3002 <\/p>\n value type\u306b\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u914d\u5217\u5185\u306evalues\u3092\u5b8c\u5168\u306b\u5e73\u5766\u5316\u3057\u3066\u3001value type\u306e\u914d\u5217\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n\n\uff08\u3053\u306e\u63d0\u6848\u306f\u3001\u8981\u7d20\u304c\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306b\u914d\u7f6e\u3055\u308c\u305fvalue\u69cb\u9020\u3067\u3042\u308b\u3001\u3044\u308f\u3086\u308b “\u30d5\u30e9\u30c3\u30c8\u30a2\u30ec\u30a4”\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\uff09\u3053\u306e\u63d0\u6848\u306e\u6700\u5c0f\u5316\u3055\u308c\u305f\u5f62\u5f0f\u3067\u306f\u3001\u30d5\u30e9\u30c3\u30c8\u5316\u3055\u308c\u305fvalue-bearing\u914d\u5217\u306e\u4e00\u90e8\u307e\u305f\u306f\u3059\u3079\u3066\u306e\u30bf\u30a4\u30d7\u306e\u30b5\u30dd\u30fc\u30c8 \u3092\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001value types \u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3001\u53c2\u7167\u3001\u307e\u305f\u306fsub-values\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u542b\u307e\u308c\u3066\u3044\u3066\u3082\u3001\u305d\u306e\u3088\u3046\u306a\u6df7\u5408\u5024\u3092\u542b\u3080\u914d\u5217\u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u306e\u5024\u3092\u542b\u3080\u914d\u5217\u3088\u308a\u3082\u5b9f\u88c5\u3059\u308b\u306e\u304c\u96e3\u3057\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059 \u3053\u306e\u3088\u3046\u306a\u914d\u5217\u306f\u521d\u671f\u306e\u5b9f\u88c5\u304b\u3089\u9664\u304b\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 \u305d\u306e\u3088\u3046\u306a\u914d\u5217\u3092\u4f5c\u6210\u3059\u308bAPI\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u4e00\u6642\u7684\u306b\u3001\u8fd4\u3059\u4ee3\u308f\u308a\u306b\u30a8\u30e9\u30fc\u3092\u30b9\u30ed\u30fc\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/blockquote>\n \u30d5\u30e9\u30c3\u30c8\u5316\u3055\u308c\u305f\u914d\u5217\u306f\u3001\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001Q-type\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30bf\u30a4\u30d7\u3067\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u5bfe\u5fdc\u3059\u308bL-types\u306e\u914d\u5217\u3068 Integer[].class<\/code> \u3068\u3061\u3087\u3046\u3069\u7570\u306a\u3063\u3066\u3044\u307e\u3059\u3002 int[].class <\/code>\u3068\u7570\u306a\u308a\u307e\u3059\u3002 \u540c\u69d8\u306b\u3001value-bearing\u914d\u5217\u306e\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u306f\u3001Object\u306e\u307f\u3067\u3042\u308a\u3001\u7570\u306a\u308b\u914d\u5217\u30bf\u30a4\u30d7\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff08int[] <\/code>\u306e\u3088\u3046\u306b\uff09\u3002 \u3053\u306e\u3088\u3046\u306a\u914d\u5217\u306f\u3001\u4ed6\u306e\u914d\u5217\u578b\u3092\u5909\u63db\u3059\u308b\u3053\u3068\u306f\u306a\u304f\u3001\u660e\u793a\u7684\u306b\u53d6\u5f97\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306b\u3088\u3063\u3066\u64cd\u4f5c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u4eca\u65e5\u306eJVM\u3067\u306f\u3001new\u3092\u4f7f\u7528\u3057\u3066\u30af\u30e9\u30b9\u3092\u6700\u521d\u306b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3059\u308b\u3068\u3001\u305d\u306e\u521d\u671f\u5316\u304c\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u307e\u3059\uff08getstatic <\/code>\u306a\u3069\u306e\u5225\u306e\u547d\u4ee4\u3067\u65e2\u306b\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408\u3092\u9664\u304f\uff09\u3002 \u521d\u671f\u5316\u306f\u3001\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u3092\u518d\u5e30\u7684\u306b\u30c8\u30ea\u30ac\u3059\u308b\u3002 \u3053\u308c\u306f\u3001\u30af\u30e9\u30b9\u306e\u521d\u671f\u30ed\u30fc\u30c9\u304c\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u306e\u30ed\u30fc\u30c9\u3092\u30c8\u30ea\u30ac\u3059\u308b\u306e\u3068\u540c\u69d8\u3067\u3042\u308b\u3002 value type\u304c\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u57cb\u3081\u8fbc\u307e\u308c\u308b\u3068\u3001\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u3068\u540c\u3058\u3088\u3046\u306b\uff08\u30af\u30e9\u30b9\u30ed\u30fc\u30c9\u3068\u521d\u671f\u5316\u306e\u30d5\u30a7\u30fc\u30ba\u306b\u95a2\u3057\u3066\uff09\u52d5\u4f5c\u3057\u307e\u3059\u3002 <\/p>\n \u7279\u306b\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5185\u306eQ-type\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u3001\u56f2\u307f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5b58\u5728\u306e\u6700\u521d\u306e\u77ac\u9593\u304b\u3089\u306eQ-type\u306e\u6709\u52b9\u306a\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\uff09value\u3067\u3042\u308b\u305f\u3081\u3001Q-type\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30af\u30e9\u30b9\u306f\u3001 \u56f2\u307f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002 \u3053\u306e\u8981\u4ef6\u306f\u3001\u540c\u3058\u73fe\u8c61\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u8981\u4ef6\u3068\u540c\u3058\u304f\u3089\u3044\u4f3c\u3066\u3044\u307e\u3059\u3002 \u30af\u30e9\u30b9\u304c\u521d\u671f\u5316\uff08\u30ed\u30fc\u30c9\uff09\u3055\u308c\u308b\u3068\u3001\u305d\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u6700\u521d\u306b\u521d\u671f\u5316\uff08\u30ed\u30fc\u30c9\uff09\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002 \u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u3068\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u30ec\u30a4\u30a2\u30a6\u30c8\u306b\u57cb\u3081\u8fbc\u307e\u308c\u305f\u4efb\u610f\u306evalues\u306e\u30af\u30e9\u30b9\u306e\u4e21\u65b9\u3092\u542b\u307f\u307e\u3059\u3002 \uff08\u5225\u306e\u65b9\u6cd5\u3067\u306f\u3001\u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u304c\u30b5\u30d6\u30af\u30e9\u30b9\u306e\u5927\u304d\u306a\u533f\u540d\u306evalue-type\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5360\u6709\u3057\u3066\u3044\u308b\u304b\u306e\u3088\u3046\u306b\u898b\u3048\u307e\u3059\uff09 \u30a4\u30f3\u30e9\u30a4\u30f3\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30af\u30e9\u30b9\u306e\u30bf\u30a4\u30e0\u30ea\u30fc\u306a\u521d\u671f\u5316\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u304c\u30af\u30e9\u30b9\u306b\u5bfe\u3057\u3066\u52d5\u4f5c\u3067\u304d\u306a\u3044\u4e0d\u5909\u6761\u4ef6\u3092\u9069\u7528\u3067\u304d\u307e\u3059 \u30af\u30e9\u30b9\u306e\u521d\u671f\u5316\u304c\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u308b\u307e\u3067\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff08\u7d14\u7c8b\u306avalues\u307e\u305f\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3092\u8fd4\u3057\u307e\u3059\u3002 <\/p>\n \u3053\u306e\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u306f\u3001\u6700\u521d\u306evalue\u304c\u4f5c\u6210\u3055\u308c\u308b\u524d\u306bDVT\u3092\u521d\u671f\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3064\u307e\u308a\u3001\u3053\u306e\u3088\u3046\u306avalue,\u3092\u542b\u3080\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u307e\u305f\u306f\u914d\u5217\u304c\u4f5c\u6210\u3055\u308c\u308b\u304b\u3001\u307e\u305f\u306fvdefault\u307e\u305f\u306fvunbox\u547d\u4ee4\u304c\u5b8c\u4e86\u3057\u307e\u3059\u3002 DVT\u306fVCC\u306b\u4f9d\u5b58\u3059\u308b\u305f\u3081\u3001DVT\u306e\u521d\u671f\u5316\u306fVCC\u306e\u521d\u671f\u5316\u3092\u30c8\u30ea\u30ac\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u5165\u529b\u304c\u5b9f\u969b\u306b\u306fVCC\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b\u305f\u3081\u3001vunbox\u547d\u4ee4\u306f\u5b9f\u969b\u306b\u306f\u3053\u308c\u3089\u306e\u30eb\u30fc\u30eb\u3092\u7de9\u548c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u3067\u3001DVT\u3092\u62bd\u51fa\u3057\u3066\u3001\u30b3\u30fc\u30c9\u3092\u542b\u3080\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u521d\u671f\u5316\u304c\u30ce\u30fc\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3060\u3051\u3067\u3059\u3002 <\/p>\nValue bytecodes<\/h4>\n\u6b21\u306e\u65b0\u3057\u3044\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u547d\u4ee4\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002 <\/p>\n\nvload<\/code> \u306f\u30ed\u30fc\u30ab\u30eb\u304b\u3089\u30b9\u30bf\u30c3\u30af\u306b\u5024\uff08Q-type\uff09\u3092\u30d7\u30c3\u30b7\u30e5\u3057\u307e\u3059\u3002\n vstore<\/code> \u306f\u3001\u30b9\u30bf\u30c3\u30af\u304b\u3089\u30ed\u30fc\u30ab\u30eb\u306b\u5024\uff08Q-type\uff09\u3092\u30dd\u30c3\u30d7\u3057\u307e\u3059\u3002\n vreturn<\/code> \u306f\u3001\u30b9\u30bf\u30c3\u30af\u304b\u3089\u5024\uff08Q-type\uff09\u3092\u30dd\u30c3\u30d7\u3057\u3001\u73fe\u5728\u306e\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u623b\u3057\u307e\u3059\u3002\n vbox<\/code> \u3068 vunbox<\/code> \u306f\u3001\u5bfe\u5fdc\u3059\u308bQ-types\u3068 L-types\u306e\u9593\u3067\u5909\u63db\u3057\u307e\u3059\n vaload<\/code> \u3068 vastore<\/code> \u304cQ-types\u306e\u300c\u30d5\u30e9\u30c3\u30c8\u306a\u300d\u914d\u5217\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002\n vdefault<\/code> \u306f\u3001\u7279\u5b9a\u306eQ-type \u306e\u56fa\u6709\u306e\u30c7\u30d5\u30a9\u30eb\u30c8value\u3092\u30b9\u30bf\u30c3\u30af\u306b\u30d7\u30c3\u30b7\u30e5\u3057\u307e\u3059\n vgetfield<\/code> \u306fQ-type\u3092\u30dd\u30c3\u30d7\u3057\u3001Q-type\u304b\u3089\u9078\u629e\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30d7\u30c3\u30b7\u30e5\u3057\u307e\u3059\n vwithfield<\/code> \u306f\u3001Q-type\u3068\u9078\u629e\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3092\u30dd\u30c3\u30d7\u3057\u3001\u66f4\u65b0\u3055\u308c\u305fQ-type\u3092\u30d7\u30c3\u30b7\u30e5\u3057\u307e\u3059 <\/li>\n<\/ul>\nValues\u306f\u3001long <\/code>\u304a\u3088\u3073 double<\/code>\uff08\u30ed\u30fc\u30ab\u30eb\u30da\u30a2\u3092\u4f7f\u7528\u3059\u308b\uff09\u306e\u3088\u3046\u306b\u30ed\u30fc\u30ab\u30eb\u306e\u30b0\u30eb\u30fc\u30d7\u3067\u306f\u306a\u304f\u3001\u5358\u4e00\u306e\u30ed\u30fc\u30ab\u30eb\u306b\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002 <\/p>\n \u3053\u308c\u3089\u306e\u547d\u4ee4\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u672a\u5b9a\u3067\u3059\u3002 \u305d\u308c\u3089\u306e\u3046\u3061\u306e\u3044\u304f\u3064\u304b\u306f\u3001\u64cd\u4f5c\u3055\u308c\u308bvalue\u306e\u30bf\u30a4\u30d7\u3092\u8a18\u8ff0\u3059\u308b\u30aa\u30da\u30e9\u30f3\u30c9\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u542b\u307e\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002 \u30d5\u30a3\u30fc\u30eb\u30c9\u64cd\u4f5c\u547d\u4ee4\u3067\u306f\u3001CONSTANT_Fieldref <\/code>\u304c\u5fc5\u8981\u3067\u3059\u3002 \u78ba\u304b\u306b\u3001vbox<\/code>, vunbox<\/code>\u3001\u304a\u3088\u3073 vdefault<\/code> \u306b\u306f\u660e\u793a\u7684\u306a\u578b\u306e\u30aa\u30da\u30e9\u30f3\u30c9\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u5fc5\u8981\u3067\u3059\u3002 <\/p>\n JVM\u306fQ-type\u306e\u30ec\u30be\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3001Q-type\u306e\u30b5\u30a4\u30ba\u3068\u914d\u7f6e\u8981\u4ef6\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u53d6\u5f97\u3057\u3001\u30a4\u30f3\u30bf\u30d7\u30ea\u30bf\u30b9\u30bf\u30c3\u30af\u30d5\u30ec\u30fc\u30e0\u306b\u9069\u5207\u306b\u300c\u30d1\u30c3\u30af\u300d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u307e\u305f\u306f\u3001JVM\u306f\u5358\u306b\u30dc\u30c3\u30af\u30b9\u5316\u307e\u305f\u306f\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3055\u308c\u305f\u8868\u73fe\uff08\u5bfe\u5fdc\u3059\u308b\u5024\u5bfe\u5fdcL\u578b\u3001\u307e\u305f\u306f\u5185\u90e8\u30d2\u30fc\u30d7\u307e\u305f\u306f\u30b9\u30bf\u30c3\u30af\u578b\uff09\u3092\u4f7f\u7528\u3057\u3001\u30b5\u30a4\u30b8\u30f3\u30b0\u60c5\u5831\u3092\u7121\u8996\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30c7\u30fc\u30bf\u79fb\u52d5\u547d\u4ee4\u306e\u578b\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u3067\u3059\u3002 JVM\u30a4\u30f3\u30bf\u30d7\u30ea\u30bf\u306f\u3001\u30b9\u30bf\u30c3\u30af\u4e0a\u306e\u3059\u3079\u3066\u306evalue types\u306b\u5bfe\u3057\u3066\u5185\u90e8\u7684\u306b\u7d71\u4e00\u3055\u308c\u305f\u300ccarrier type\u300d\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u3053\u306ecarrier type\u3092\u81ea\u5df1\u8a18\u8ff0\u578b\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3060\u3051\u3067\u3001\u6b63\u78ba\u306avalue type\u3092\u518d\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093 \u30c7\u30fc\u30bf\u79fb\u52d5\u547d\u4ee4\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002 <\/p>\n invokevirtual<\/code>, invokespecial<\/code>\u3001\u304a\u3088\u3073 invokeinterface<\/code> \u547d\u4ee4\u306fQ-mode\u547d\u4ee4\u3067\u3042\u308b\u305f\u3081\u3001Q-values\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 \u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3001invokestatic<\/code> \u3068 invokedynamic<\/code> \u306f\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u304c\u5e38\u306b Q-types\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3092\u8a31\u53ef\u3057\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u958b\u59cb\u306b\u306f\u5341\u5206\u3067\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306f\u3001\u5b9f\u969b\u306b\u306fQ-type\u3092\u5185\u90e8\u7684\u306b\u56f2\u307f\u3001\u5bfe\u5fdc\u3059\u308bL-type\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u30a4\u30f3\u30bf\u30d7\u30ea\u30bf\u3078\u306e\u666e\u53ca\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001Java\u30b5\u30dd\u30fc\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u6539\u5584\u304a\u3088\u3073\u6700\u9069\u5316\u3067\u304d\u308b\u65b9\u6cd5\u3067\u3059\u3002 <\/p>\n \n\uff08\u6ce8\uff1a\u5b8c\u5168\u306a\u63d0\u6848\u306b\u306f\u30dc\u30af\u30b7\u30f3\u30b0\u306a\u3057\u3067Q-types\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059Q-mode\u306e\u547c\u3073\u51fa\u3057\u547d\u4ee4\u3001vinvoke\u304c\u3042\u308b\u3068\u78ba\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002 U-types\u306e\u5834\u5408\u3001U-mode uinvoke\u547d\u4ee4\u306f\u3001Q-values \u307e\u305f\u306fL-values\u306e\u3044\u305a\u308c\u304b\u3067\u3042\u308a\u5f97\u308b\u52d5\u7684\u30bf\u30b0\u4ed8\u304dreceiver values\u306b\u5bfe\u3057\u3066\u3082\u540c\u69d8\u306b\u52d5\u4f5c\u3059\u308b\u3002 \u3053\u306e\u4f59\u5206\u306a\u30e2\u30fc\u30c9\u306f\u6d6a\u8cbb\u306e\u3088\u3046\u306b\u898b\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u7d14\u7c8b\u306avalues\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u306e\u4e21\u65b9\u306b\u53ca\u3076\u53ef\u80fd\u6027\u306e\u3042\u308b\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u307e\u305f\u306f\u578b\u5909\u6570\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u4e00\u822c\u7684\u306a\u5909\u6570\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u51e6\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \uff09<\/p>\n<\/blockquote>\n Verifier interactions<\/h5>\n\u30e1\u30bd\u30c3\u30c9\u306e\u5165\u529b\u72b6\u614b\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u304d\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u8a18\u8ff0\u5b50\u306bQ-type\u304c\u73fe\u308c\u305f\u5834\u5408\u3001\u691c\u8a3c\u8005\u306fQ-type\uff08L-type\u3067\u306f\u306a\u3044\uff01\uff09\u304c\u5bfe\u5fdc\u3059\u308b\u30ed\u30fc\u30ab\u30eb\u306e\u30a8\u30f3\u30c8\u30ea\u306b\u5b58\u5728\u3059\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u307e\u3059\u3002 <\/p>\n \u30e1\u30bd\u30c3\u30c9\u304b\u3089\u623b\u308b\u3068\u304d\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u306e\u578b\u304cQ-type\u306e\u5834\u5408\u3001\u540c\u3058Q-type\u304c\u30b9\u30bf\u30c3\u30af\u306e\u6700\u4e0a\u90e8\u306b\u5b58\u5728\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002 <\/p>\n \u547c\u3073\u51fa\u3057\u3092\uff08\u4efb\u610f\u306e\u30e2\u30fc\u30c9\u3067\uff09\u5b9f\u884c\u3059\u308b\u3068\u304d\u3001\u30b9\u30bf\u30c3\u30af\u306f\u30e1\u30bd\u30c3\u30c9\u53c2\u7167\u306e\u5f15\u6570\u8a18\u8ff0\u5b50\u306e\u4efb\u610f\u306eQ-types\u306b\u5bfe\u5fdc\u3059\u308b\u4f4d\u7f6e\u306b\u4e00\u81f4\u3059\u308bQ-types\u3092\u542b\u307e\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002 \u547c\u3073\u51fa\u3057\u306e\u5f8c\u3001\u623b\u308a\u5024\u306e\u578b\u8a18\u8ff0\u5b50\u304cQ-type\u306e\u5834\u5408\u3001\u30b9\u30bf\u30c3\u30af\u306f\u305d\u306eQ-type\u3092\u5148\u982d\u306b\u542b\u3080\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002 <\/p>\n int<\/code> \u578b\u3068float <\/code>\u578b\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u5834\u5408\u3068\u540c\u69d8\u306b\u3001Q-type\u306f\u4ed6\u306e\u691c\u8a3c\u578b\u306b\u5909\u63db\u3055\u308c\u307e\u305b\u3093\u3002 \u3042\u308b\u3044\u306f\u3001\u691c\u8a3c\u4e0a\u4f4d\u578b oneWord<\/code> \u307e\u305f\u306f top <\/code>\u691c\u8a3c\u578b\u306b\u5909\u63db\u3055\u308c\u307e\u305b\u3093\u3002 \u3053\u308c\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u3068\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d5\u30ed\u30fc\u30de\u30fc\u30b8\u30dd\u30a4\u30f3\u30c8\u3067\u306evalues\u306e\u30de\u30c3\u30c1\u30f3\u30b0\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002 Q-types\u306fL-types\u306b\u5909\u63db\u3055\u308c\u307e\u305b\u3093\u3002 \u30dc\u30c3\u30af\u30b9\u3084\u305d\u306eL-types\u306e\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\uff08Object<\/code>\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\uff09\u306f\u5909\u63db\u3055\u308c\u307e\u305b\u3093\u3002 <\/p>\n vload<\/code>, vstore<\/code>, vreturn<\/code>\u3001\u304a\u3088\u3073 invoke<\/code> \u30d5\u30a1\u30df\u30ea\u306e\u4ed6\u306b\u3001Q-type\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u751f\u6210\u307e\u305f\u306f\u6d88\u8cbb\u3059\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u552f\u4e00\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306f\u3001pop<\/code>, pop2<\/code>\u3001swap\u3001\u304a\u3088\u3073 dup <\/code>\u30d5\u30a1\u30df\u30ea\u3067\u3059\u3002 \u3088\u308a\u591a\u304f\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u8ffd\u52a0\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u691c\u8a3c\u8005\u306f\u3001Q-types\u306e\u9069\u5207\u306a\u51e6\u7406\u3092\u9069\u7528\u3057\u307e\u3059\u3002 <\/p>\n vaload<\/code> \u547d\u4ee4\u3068 vastore<\/code> \u547d\u4ee4\u306f\u3001\u65e2\u5b58\u306e\u914d\u5217\u547d\u4ee4\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3057\u307e\u3059\u3002 \u7d71\u4e00\u3055\u308c\u305f\u30ad\u30e3\u30ea\u30a2\u30bf\u30a4\u30d7\u304c\u4e0e\u3048\u3089\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u5f7c\u3089\u304c\u52d5\u4f5c\u3059\u308bQ-type\u3092\u518d\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u305d\u306e\u578b\u306f\u5e38\u306b\u914d\u5217\u81ea\u4f53\u304b\u3089\u62bd\u51fa\u3067\u304d\u307e\u3059\u3002 <\/p>\n vgetfield<\/code> \u547d\u4ee4\u306b\u306f\u3001\u65e2\u5b58\u306e getfield<\/code> \u547d\u4ee4\u3068\u540c\u69d8\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u304c\u3042\u308a\u307e\u3059\u3002 \u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u3042\u308bvalue type\u3067public\u3067\u3042\u308b\u5834\u5408\u3001\u3069\u306e\u30af\u30e9\u30b9\u3082\u305d\u306e\u578b\u306e\u5024\u304b\u3089\u305d\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u3057\u304b\u3057\u3001vwithfield<\/code> \u547d\u4ee4\u306f\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30a2\u30af\u30bb\u30b9\u306b\u95a2\u4fc2\u306a\u304f\u3001\u53b3\u5bc6\u306a\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002 value type\u3078\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30a2\u30af\u30bb\u30b9\u3092\u6301\u3064\u30af\u30e9\u30b9\u306e\u307f\u304c\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u7f6e\u63db\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u5236\u9650\u306f\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u30af\u30e9\u30b9\u3067\u306e\u307f\u3001\u5b9f\u969b\u306b\u306f\u305d\u306e\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u3067\u306e\u307f\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u3001\u6700\u7d42\u30d5\u30a3\u30fc\u30eb\u30c9\u306e putfield<\/code> \u306e\u5236\u9650\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002 VCC\u3068DVT\u306f\u540c\u3058\u8ad6\u7406\u578b\u306e2\u3064\u306e\u5074\u9762\u3067\u3042\u308b\u305f\u3081\u3001JVM\u306fVCC\u304cDVT\u3067 vwithfield<\/code> \u64cd\u4f5c\u3092\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3001VCC\u304c\u4f55\u3089\u304b\u306e\u65b9\u6cd5\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f vwithfield<\/code> \u547d\u4ee4\u3067\u624d\u80fd\u3092\u6301\u305f\u306a\u3044\u9650\u308a\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u4f7f\u3063\u3066\u53cd\u6620\u3055\u308c\u307e\u3059\u3002 <\/p>\n \n\uff08\u6ce8\uff1aValue\u30d5\u30a3\u30fc\u30eb\u30c9\u66f4\u65b0\u547d\u4ee4\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u304cfinal\u3067\u3042\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u66f4\u65b0\u547d\u4ee4\u306b\u307b\u307c\u5bfe\u5fdc\u3059\u308b\u3002 \u30eb\u30fc\u30eb\u306e\u8a73\u7d30\u306f\u7570\u306a\u308a\u307e\u3059\u3002 JVM\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u5185\u306efinal\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u306e\u307fputfield\u3092\u5236\u9650\u3059\u308b\u30eb\u30fc\u30eb\u3092\u5f37\u5236\u3057\u307e\u3059\u3002 Java\u8a00\u8a9e\u306f\u3055\u3089\u306b\u5236\u7d04\u3092\u8ab2\u3057\u3001\u5404\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u304b\u3089\u306e\u901a\u5e38\u306e\u623b\u308a\u307e\u3067\u306e\u3059\u3079\u3066\u306e\u30d1\u30b9\u306b\u6cbf\u3063\u3066\u6b63\u78ba\u306b1\u56de\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 JVM\u306f\u3001\u8a00\u8a9e\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u305f\u3053\u308c\u3089\u306e\u66f4\u306a\u308b\u5236\u7d04\u3092\u4fdd\u8a3c\u3057\u3066\u304a\u3089\u305a\u3001\u307e\u305f\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u306efinal\u30d5\u30a3\u30fc\u30eb\u30c9\u306b0\u3092\u542b\u3080\u4efb\u610f\u306e\u6570\u306eputfield\u547d\u4ee4\u3092\u767a\u751f\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u540c\u69d8\u306b\u3001\u8a00\u8a9e\u306b\u3088\u3063\u3066\u6700\u7d42\u7684\u306b\u306fvalue\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u9069\u5207\u306a\u521d\u671f\u5316\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u304c\u3001vwithfield\u306e\u4f7f\u7528\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30b3\u30fc\u30c9\u306b\u9650\u5b9a\u3059\u308b\u3053\u3068\u3092\u9664\u3044\u3066\u3001JVM\u306b\u306f\u7279\u5225\u306a\u5f79\u5272\u306f\u3042\u308a\u307e\u305b\u3093\u3002 vwithfield\u306f\u3001\u6700\u7d42\u7684\u306b\u306f “\u67af\u308c\u305f”\u30e1\u30bd\u30c3\u30c9\u306e\u3088\u3046\u306avalue\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u5916\u3067\u6b63\u5f53\u306a\u4f7f\u7528\u3092\u898b\u3064\u3051\u308b\u305f\u3081\u3001\u5236\u9650\u306ffinal\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5236\u9650\u3068\u540c\u3058\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002)<\/p>\n<\/blockquote>\n \u30ea\u30d5\u30ec\u30af\u30c6\u30a3\u30d6Lookup API\u306b\u3088\u308a\u3001VCC\u3068DVT\u306f\u3001\u4eca\u65e5\u306e\u4ef2\u9593\u306e\u9593\u3067\u5171\u6709\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u3001\u4ed6\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30e1\u30f3\u30d0\u30fc\u3084\u6a5f\u80fd\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5171\u6709\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306b\u306f\u3001vwithfield<\/code> \u547d\u4ee4\u3092\u4f7f\u7528\u3059\u308b\u6a29\u9650\u304c\u542b\u307e\u308c\u307e\u3059\u3002 DVT\u306b\u306f\u30e1\u30bd\u30c3\u30c9\u304c\u306a\u3044\u306e\u3067\u3001\u3053\u306e\u5171\u6709\u306f\u975e\u5bfe\u79f0\u3067\u3059\u304c\u3001\u3069\u3093\u306a\u30ec\u30fc\u30c8\u3067\u3082\u53cc\u65b9\u5411\u3067\u3059\u3002 <\/p>\n \n(\u6ce8\uff1aJVM\u306e\u5c06\u6765\u306e\u30ea\u30d3\u30b8\u30e7\u30f3\u306f\u3001\u76f8\u4e92\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u30e1\u30bd\u30c3\u30c9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u660e\u793a\u7684\u306aVM\u30ec\u30d9\u30eb\u306e “\u30cd\u30b9\u30c8\u30e1\u30a4\u30c8”\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002 \u305d\u306e\u30ea\u30d3\u30b8\u30e7\u30f3\u3067\u306f\u3001vwithfield\u547d\u4ee4\u306f\u3001\u6307\u5b9a\u3055\u308c\u305fvalue type\u306e\u3059\u3079\u3066\u306e\u30cd\u30b9\u30c8\u30e1\u30a4\u30c8\u306b\u5bfe\u3057\u3066\u4f7f\u7528\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002 \u3064\u307e\u308a\u3001vwithfield\u306f\u3001private\u30e1\u30bd\u30c3\u30c9\u304c\u5229\u7528\u53ef\u80fd\u306a\u540c\u3058\u300c\u30ab\u30d7\u30bb\u30eb\u300d\u5185\u3067\u5229\u7528\u53ef\u80fd\u3067\u3042\u308b\u3002)<\/p>\n<\/blockquote>\n vdefault<\/code> \u547d\u4ee4\u306f\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u4f7f\u7528\u3057\u306a\u3044\u3067\u5024\u3092\u4f5c\u6210\u3067\u304d\u308b\u305f\u3081\u3001value type\u306b\u5bfe\u3057\u3066\u975e\u5e38\u306b\u300cprivate\u300d\u306a\u3088\u3046\u3067\u3059\u3002 \u3057\u304b\u3057\u3001JVM\u306f\u30c7\u30d5\u30a9\u30eb\u30c8values\u3092\u975e\u5e38\u306b\u7279\u6b8a\u306a\u72b6\u614b\u306b\u3057\u307e\u3059\u3002 \u306a\u305c\u306a\u3089\u3001\u4e0e\u3048\u3089\u308c\u305f\u578b\u306e\u914d\u5217\u306f\u5e38\u306b\u305d\u306e\u578b\u306e\u30c7\u30d5\u30a9\u30eb\u30c8values\u3067\u3042\u3089\u304b\u3058\u3081\u30d1\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001\u5b9f\u969b\u306b\u306f vdefault <\/code>\u306b\u3064\u3044\u3066\u306f\u300cprivate\u300d\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u3069\u3093\u306a\u30af\u30e9\u30b9\u3067\u3082\u3001\u4efb\u610f\u306eQ-type\u306e\u30c7\u30d5\u30a9\u30eb\u30c8value\u3092\u3044\u3064\u3067\u3082\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002 <\/p>\n Q-types and bytecodes<\/h5>\nQ-types\u3068\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u4ed6\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306f\u3001\u5c11\u306a\u304f\u3068\u3082\u3053\u308c\u3089\u306e\u3082\u306e\u3067\u3042\u308b\uff1a <\/p>\n \n\u3059\u3079\u3066\u306e\u547c\u3073\u51fa\u3057\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\uff1a\u5f15\u6570\u307e\u305f\u306f\u623b\u308a\u5024\u306f\u3059\u3079\u3066Q-type\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u30ec\u30b7\u30fc\u30d0\u30fc\uff08Methodref<\/code>\u306e\u30af\u30e9\u30b9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\uff09\u306f\u3001\u9759\u7684\u30e1\u30f3\u30d0\u30fc\u3067\u3042\u3063\u3066\u3082\n lldc<\/code> \u3068 ldc_w<\/code> \uff08Q-type\u306e\u3001\u307e\u305f\u306f\u304a\u305d\u3089\u304f\u52d5\u7684\u306b\u751f\u6210\u3055\u308c\u305f\u5b9a\u6570\u306e\uff09\n Q-type\u8981\u7d20\u306e\u914d\u5217\u306b\u5bfe\u3059\u308b anewarray<\/code>, multianewarray <\/code>\u306e\u4f5c\u696d <\/li>\n<\/ul>\n\u3053\u308c\u3089\u306e\u624b\u9806\u306f\u3001minimal version\u3067\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \ngetfield<\/code>, putfield<\/code>, getstatic<\/code>, putstatic<\/code> \uff08Q-type value\u306e\uff09 <\/li>\n<\/ul>\nJVM\u306f\u3001Q-type\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u304c\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u30a2\u30af\u30bb\u30b9\u547d\u4ee4\u3092\u64cd\u4f5c\u3059\u308b\u3053\u3068\u3092\u8a31\u53ef\u3057\u306a\u3044\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3092\u53d7\u3051\u5165\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u306e\u5834\u5408\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306f\u3001\u305d\u306e\u3088\u3046\u306a\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306eQ-typed\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u53d6\u5f97\u3057\u3066\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306e\u56de\u907f\u7b56\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 <\/p>\n \uff08\u3053\u306e\u3088\u3046\u306a\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u76f4\u63a5\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u30b9\u30d4\u30f3\u3084javac\u306e\u62e1\u5f35\u3055\u308c\u305f\u975e\u6a19\u6e96\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 VCC\u306b\u306fQ-typed\u8a18\u8ff0\u5b50\u306f\u542b\u307e\u308c\u307e\u305b\u3093\u3002) <\/p>\n Value type reflection<\/h4>\nvalue type\u306e\u4e16\u754c\u306b\u7740\u624b\u3059\u308b\u3068\u3001\u53cd\u5c04\u7684\u306a\u30af\u30e9\u30b9\u30fb\u30df\u30e9\u30fc\u578b java.lang.Class <\/code>\u306e\u5f79\u5272\u306b\u6839\u672c\u7684\u306a\u5909\u5316\u304c\u8d77\u3053\u308a\u307e\u3059\u3002 value types\u306e\u524d\u306b\u306f\u3001\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3068 Class<\/code> \u30df\u30e9\u30fc\u306e\u9593\u306b\u53b3\u5bc6\u306a1\u5bfe1\u306e\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\u3002 \u552f\u4e00\u306e\u4f8b\u5916\u306f\u3001\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u6765\u3066\u3044\u306a\u3044 int.class <\/code>\u306e\u3088\u3046\u306a\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u30df\u30e9\u30fc\u3067\u3059\u3002 value types\u3067\u306f\u30011\u3064\u306e\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u304c\u8907\u6570\u306e Class<\/code> \u30df\u30e9\u30fc\u306b\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u5177\u4f53\u7684\u306b\u306f\u3001value type\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3068\u3001Q-type\u7528\u3068L-type\u7528\u306e2\u3064\u306e\u30df\u30e9\u30fc\u304c\u4f7f\u7528\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002 \u305d\u308c\u3089\u306e\u95a2\u4fc2\u306f\u3001 int.class<\/code> \u3068 Integer.class<\/code> \u306e\u9593\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u304c\u30012\u3064\u306e\u7570\u306a\u308b\u30d3\u30e5\u30fc\u307e\u305f\u306f\u6295\u5f71\u3067\u540c\u3058\u30af\u30e9\u30b9\u3092\u8868\u73fe\u3057\u307e\u3059\u3002 \uff08\u4e21\u65b9\u306e\u30d3\u30e5\u30fc\u3092\u5305\u542b\u3059\u308bU-type\u3082\u3042\u308a\u307e\u3059\u3002\u7279\u6b8a\u30af\u30e9\u30b9\u3067\u306f\u3001\u6d3e\u751f\u3059\u308b\u7279\u6b8a\u5316\u306e\u6570\u306b\u5236\u9650\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u3002 <\/p>\n \u3053\u308c\u3092\u3059\u3079\u3066\u8003\u616e\u3059\u308b\u3068\u3001\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3092\u6700\u3082\u76f4\u63a5\u7684\u306b\u8868\u3059\u3001\u30af\u30e9\u30b9\u306e\u4e3b\u93e1\u307e\u305f\u306f\u9069\u5207\u306a\u93e1\u306b\u3064\u3044\u3066\u8a71\u3059\u3053\u3068\u306f\u6709\u76ca\u3067\u3042\u308b\u3068\u601d\u308f\u308c\u308b\u3002 \u6b21\u306b\u3001\u305d\u306e “\u30d8\u30eb\u30d1\u30fc”\u3001\u3059\u306a\u308f\u3061\u3001\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u306e\u4e8c\u6b21\u30d3\u30e5\u30fc\u307e\u305f\u306f\u6295\u5f71\u3092\u8868\u3059\u4ed6\u306e\u30af\u30e9\u30b9\u30df\u30e9\u30fc\u304c\u3042\u308a\u307e\u3059\u3002 \u79c1\u305f\u3061\u306f\u3053\u308c\u3089\u3092\u4e8c\u6b21\u30df\u30e9\u30fc\u307e\u305f\u306f\u4e0d\u9069\u5207\u306a\u30df\u30e9\u30fc\u3068\u8a00\u3044\u307e\u3059\u3002 <\/p>\n \n\uff08\u6ce8\uff1a\u79c1\u305f\u3061\u304c\u7cbe\u7d30\u306b\u898b\u308c\u3070\u3001Integer.class\u306f\u4e0d\u9069\u5207\u306a\u30df\u30e9\u30fcint.class\u306e\u9069\u5207\u306a\u30df\u30e9\u30fc\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002 \u304a\u305d\u3089\u304f\u3001\u305d\u308c\u3089\u306f\u5c06\u6765\u7d71\u5408\u3055\u308c\u3001\u5171\u901a\u306e\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u5b9f\u969b\u306b\u8a71\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/blockquote>\n minimal value types\u306e\u5834\u5408\u3001DVT\u3068VCC\u306e Class<\/code> \u30df\u30e9\u30fc\u3092\u533a\u5225\u3057\u3001VCC\u3092\u4e3b\u30df\u30e9\u30fc\u3068\u3057\u3066\u6271\u3044\u3001DVT\u3092\u526f\u30df\u30e9\u30fc\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u3067\u3001\u3053\u306e\u52c7\u6562\u306a\u65b0\u3057\u3044\u4e16\u754c\u306b\u30a2\u30d7\u30ed\u30fc\u30c1\u3057\u307e\u3059\u3002 <\/p>\n \u30d1\u30d6\u30ea\u30c3\u30af\u30af\u30e9\u30b9 jdk.experimental.value.ValueType<\/code>\uff08\u5185\u90e8\u30e2\u30b8\u30e5\u30fc\u30eb\u5185\uff09\u306b\u306f\u3001\u3053\u306e\u521d\u671f\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u306evalues\u306e\u30e9\u30f3\u30bf\u30a4\u30e0\u30b5\u30dd\u30fc\u30c8\u306e\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u542b\u307e\u308c\u307e\u3059\u3002 <\/p>\n ValueType<\/code> \u306b\u306f\u3001Q-types\u3092\u53cd\u6620\u3059\u308b\u305f\u3081\u306e\u6b21\u306e\u30d1\u30d6\u30ea\u30c3\u30af\u30e1\u30bd\u30c3\u30c9\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n public class ValueType<T> {\n static boolean classHasValueType(Class<T> x);\n static ValueType<T> forClass(Class<T> x);\n Class<T> valueClass(); \/\/ DVT, secondary mirror\n Class<T> boxClass(); \/\/ VCC, principal mirror\n ...\n}<\/code><\/pre>\n\u8ff0\u8a9e classHasValueType<\/code> \u306f\u3001\u5f15\u6570\u304cQ-type\u307e\u305f\u306f\uff08L-type\u306e\uff09value-capable class\u3092\u8868\u3059\u5834\u5408\u306ftrue\u3067\u3059\u3002 forClass<\/code> \u30d5\u30a1\u30af\u30c8\u30ea\u306f\u3001value-capable class\u304b\u3089\u6d3e\u751f\u3057\u305f\u4efb\u610f\u306e\u578b\u306eQ-type\u306e\u8a18\u8ff0\u5b50\u3092\u8fd4\u3057\u307e\u3059\u3002 \uff08\u4ed6\u306e\u578b\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001IllegalArgumentException <\/code>\u304c\u30b9\u30ed\u30fc\u3055\u308c\u307e\u3059\u3002\u4f8b\u5916\u3092\u56de\u907f\u3059\u308b\u306b\u306f\u3001\u307e\u305a classHasValueType<\/code> \u3092\u4f7f\u7528\u3057\u3066\u30c6\u30b9\u30c8\u3057\u307e\u3059\uff09\u3002 <\/p>\n 2\u3064\u306e\u30a2\u30af\u30bb\u30b5 valueClass<\/code> \u3068 boxClass<\/code> \u306f\u3001\u305d\u308c\u305e\u308cQ-type\u3068\u5143\u306e\uff08value-capable\u306e\uff09L-type\u306e\u500b\u5225\u306e java.lang.Class<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002 <\/p>\n ValueType.forClass(vt.valueClass())<\/code>\u304c vt <\/code>\u3068\u540c\u3058\u3067\u3001boxClass <\/code>\u306e\u5834\u5408\u3082\u540c\u69d8\u3067\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001value type\u306e\u4efb\u610f\u306e Class<\/code> \u5074\u9762\u3092\u4f7f\u7528\u3057\u3066\u3001\u305d\u306e ValueType<\/code> \u8a18\u8ff0\u5b50\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u5f93\u6765\u306e\u53c2\u7167\u30e1\u30bd\u30c3\u30c9 Class.forName<\/code> \u306f\u3001\u4e92\u63db\u6027\u306e\u7406\u7531\u304b\u3089 boxClass <\/code>\u3092\u5f15\u304d\u7d9a\u304d\u8fd4\u3057\u307e\u3059\u3002 \u3053\u306e\u72b6\u614b\u306f\u6301\u7d9a\u3057\u3066\u3082\u3057\u306a\u304f\u3066\u3082\u3088\u3044\u3002 \uff08\u5c06\u6765\u3001\u30bd\u30fc\u30b9\u8a00\u8a9e\u306e\u69cb\u9020 T.class<\/code> \u306f\u3001 “int\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b”\u3068\u3044\u3046\u30b9\u30ed\u30fc\u30ac\u30f3\u306e\u4e0b\u3067\u3001T <\/code>\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u30bf\u30a4\u30d7\u306b\u81ea\u7136\u306a\u3082\u306e\u3092\u751f\u6210\u3059\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\uff09\u3002 <\/p>\n Q-type\u306e2\u6b21\u30df\u30e9\u30fc\u306f\u3001getDeclaredMethods <\/code>\u306a\u3069\u306e\u6700\u3082\u610f\u5473\u306e\u3042\u308b\u53cd\u5c04\u7167\u4f1a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u305b\u3093\u3002 \u3053\u306e\u7406\u7531\u306f\u3001VCC\u304b\u3089\u6d3e\u751f\u3057\u305fDVT\u306f\u3067\u304d\u308b\u3060\u3051\u7a7a\u3067\u3042\u308b\u304b\u3089\u3067\u3059\u3002 \u53cd\u5c04\u30af\u30a8\u30ea\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u304c\u8868\u793a\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3044\u305a\u308c\u306e\u5834\u5408\u3067\u3082\u3001\u30e6\u30fc\u30b6\u306fVCC\uff08boxClass<\/code>\uff09\u3092\u4f7f\u7528\u3057\u3066value type\u306b\u95a2\u9023\u3059\u308b\u30e1\u30f3\u30d0\u30fc\u3092\u8abf\u3079\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \uff08\u3053\u306e\u72b6\u614b\u306f\u30012\u3064\u306e\u30af\u30e9\u30b9\u304c\u7d50\u5408\u3055\u308c\u305f\u3068\u304d\u306b\u3088\u304f\u5909\u5316\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\uff09 \u3053\u308c\u306f\u3001VCC\u304c\u30ed\u30fc\u30c9\u3055\u308c\u305f\u3068\u304d\u306bPOJO\uff08\u666e\u901a\u306e\u53e4\u3044Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3068\u3057\u3066\u6271\u308f\u308c\u3001DVT\u304cVCC\u304b\u3089\u62bd\u51fa\u3055\u308c\u3001\u305d\u306e\u30a2\u30b9\u30da\u30af\u30c8\u3092\u5909\u66f4\u3057\u306a\u3044\u305f\u3081\u6b63\u5e38\u3067\u3059\u3002 <\/p>\n \uff08int.class <\/code>\u306e\u3088\u3046\u306a\uff09\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306a\u64ec\u4f3c\u578b\u304c\u51fa\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u3053\u308d\u3067\u306f\u3001Q-types\u306e\u4e0d\u9069\u5207\u306a\u30af\u30e9\u30b9\u304c\u53cd\u5c04API\u306b\u73fe\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u3089\u306eAPI\u306b\u306f\u3001\u30b3\u30a2\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\uff08Class<\/code> \u3068 java.lang.reflect <\/code>\u306e\u578b\uff09\u3068 java.lang.invoke <\/code>\u306e\u65b0\u3057\u3044API\uff08 MethodType<\/code> \u3084 MethodHandles.Lookup <\/code>\u306a\u3069\uff09\u304c\u542b\u307e\u308c\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u578b\u3067\u52d5\u4f5c\u3059\u308b\u5b9a\u6570\u30d7\u30fc\u30eb\u5b9a\u6570\u306f\u3001Q-types \u304a\u3088\u3073L-types\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u306e\u533a\u5225\u306f Class<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u9069\u5207\u306a\u9078\u629e\u80a2\uff08\u9069\u5207\u304b\u5426\u304b\uff09\u3068\u3057\u3066\u53cd\u6620\u3055\u308c\u307e\u3059\u3002 <\/p>\n \n\uff08\u4e0d\u9069\u5207\u306a\u30af\u30e9\u30b9\u306f\u3001\u6642\u306b\u306f “crass”\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304c\u3001 “r”\u306e\u97f3\u306f\u3001\u5b9f\u884c\u6642\u306b\u5fc5\u8981\u306a\u533a\u5225\u3092\u660e\u78ba\u306b\u3059\u308b\u305f\u3081\u306b\u306e\u307f\u5b58\u5728\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\uff09\u3002 \u30e1\u30a4\u30f3\u30af\u30e9\u30b9\u306fClass.forName\u306b\u3088\u3063\u3066\u8fd4\u3055\u308c\u308b\u3082\u306e\u3067\u3001 more principled approach to reflection [cimadamore-refman]<\/a>\u306f\u3001\u9069\u5207\u306b\u6d17\u7df4\u3055\u308c\u305f\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u30bf\u30a4\u30d7\u968e\u5c64\u306e “type mirrors”\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<\/blockquote>\n \u3044\u3064\u3082\u306e\u3088\u3046\u306b\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30ebAPI\u3092\u4f7f\u7528\u3057\u3066\u3001\u914d\u5217\u306e\u4f5c\u6210\u3068\u64cd\u4f5c\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30ed\u30fc\u30c9\u3068\u683c\u7d0d\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306e\u53d6\u5f97\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 Q-type\u30df\u30e9\u30fc\u306f\u3001\u4e00\u822c\u306b\u3001\u65e2\u5b58\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30df\u30e9\u30fc\u3068\u540c\u3058\u3088\u3046\u306b\u52d5\u4f5c\u3057\u3001JVM\u306b\u3001\u30dc\u30c3\u30af\u30b9\u3078\u306e\u53c2\u7167\u3068\u3057\u3066\u3067\u306f\u306a\u304f\u3001\u7d14\u7c8b\u306a\u5024\u3068\u3057\u3066\u30c7\u30fc\u30bf\u3092\u6e21\u3059\u3088\u3046\u306b\u6307\u793a\u3057\u307e\u3059\u3002 <\/p>\n \u30bf\u30a4\u30d7\u3092\u5909\u66f4\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u5909\u63db\uff08asType <\/code>\u306a\u3069\uff09\u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u30dc\u30af\u30b7\u30f3\u30b0\u3068\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u3092\u8868\u73fe\u3067\u304d\u308b\u3088\u3046\u306b\u3001value-type\u306e\u30dc\u30af\u30b7\u30f3\u30b0\u3068\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002 \u3057\u305f\u304c\u3063\u3066\u3001\u6b21\u306e\u30b3\u30fc\u30c9\u306f\u3001DoubleComplex<\/code> \u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u30dc\u30c3\u30af\u30b9\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n Class<DoubleComplex> srcType = DoubleComplex.class;\nClass<DoubleComplex> qt = ValueType.forClass(srcType).valueClass();\nMethodHandle mh = identity(qt).asType(methodType(Object.class, qt));<\/code><\/pre>\n\u3082\u3061\u308d\u3093\u3001\u578b\u5909\u63db\u30e1\u30bd\u30c3\u30c9 MethodHandle.invoke<\/code> \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u73fe\u5728\u306eJava\u8a00\u8a9e\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u30dc\u30c3\u30af\u30b9\u578b\u3001\u307e\u305f\u306fQ-types\u306b\u95a2\u3057\u3066\uff08\u9069\u5207\u306a\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\uff09\u3088\u308a\u76f4\u63a5\u7684\u306b\u3001Q-types\u306b\u5bfe\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\nBoxed values<\/h4>\n\u30dc\u30af\u30b7\u30f3\u30b0\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u3092\u4f7f\u7528\u3057\u3066\u3059\u3079\u3066\u306e\u30bf\u30a4\u30d7\u306b\u308f\u305f\u3063\u3066\u6c4e\u7528\u30b5\u30fc\u30d3\u30b9\u3092\u5b9f\u884c\u3059\u308bQ-types\u3068API\u9593\u306e\u76f8\u4e92\u904b\u7528\u6027\u3092\u5f97\u308b\u305f\u3081\u306b\u6709\u7528\u3067\u3059\u3002 \u591a\u304f\u306e\u30c4\u30fc\u30eb\uff08\u30c7\u30d0\u30c3\u30ac\u3001\u30ed\u30ac\u30fc\u3001println<\/code> \u30e1\u30bd\u30c3\u30c9\u306a\u3069\uff09\u306f\u3001\u4efb\u610f\u306e\u30c7\u30fc\u30bf\u3092\u5831\u544a\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u306e Object<\/code> \u5f62\u5f0f\u3092\u524d\u63d0\u3068\u3057\u3066\u3044\u307e\u3059\u3002 Q-type\uff08\u307e\u305f\u306f\u3088\u308a\u4e00\u822c\u7684\u306b\u306f\u3001\u3069\u306e\u3088\u3046\u306a\u30dc\u30af\u30b7\u30f3\u30b0\u30e1\u30ab\u30cb\u30ba\u30e0\u304cQ-types\u306e\u30b3\u30f3\u30c6\u30ca\u3068\u3057\u3066\u7d42\u308f\u308b\u304b\uff09\u306evalue-capable L-type\u306f\u3001\u521d\u671f\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u305d\u3057\u3066\u6700\u7d42\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3055\u3048\uff08\u304a\u305d\u3089\u304f\u305d\u3046\u3067\u3042\u308b\u3088\u3046\u306b\uff09\u6709\u7528\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u3002 <\/p>\n \u524d\u8ff0\u306e\u3088\u3046\u306b\u3001value-capable class\uff08L-type\uff09\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u3001\u6700\u521d\u306f\u5bfe\u5fdc\u3059\u308bQ-type\u306evalues\u306eboxes\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30ebAPI\u306f\u3001box \/ unbox\u5909\u63db\u6f14\u7b97\u5b50\u304c\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3068\u3057\u3066\u6d6e\u4e0a\u3057\u305f\u308a\u3001\u5f15\u6570\u306e\u5909\u63db\u306b\u6697\u9ed9\u7684\u306b\u9069\u7528\u3055\u308c\u305f\u308a\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002 <\/p>\n value-capable L-type\u306f\u307e\u305f\u3001toString <\/code>\u306e\u3088\u3046\u306a\u3044\u304f\u3064\u304b\u306e\u7a2e\u985e\u306eQ-type\u52d5\u4f5c\u3092\u3001\u6a19\u6e96\u306eJava\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066L-type\u306b\u76f4\u63a5\u8a18\u8ff0\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u4fbf\u5229\u306a\u4ed5\u69d8\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u691c\u7d22\u30e9\u30f3\u30bf\u30a4\u30e0\u306f\u3001\uff08HotSpot JVM\u304c\u4f59\u5206\u306a\u30dc\u30af\u30b7\u30f3\u30b0\u30b9\u30c6\u30c3\u30d7\u3092\u9664\u53bb\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u7bc4\u56f2\u306e\u30b9\u30ab\u30e9\u30fc\u5316\u6700\u9069\u5316\u3092\u6709\u3059\u308b\u306e\u3067\uff09unboxed receiver (this<\/code>)\u3068boxed receiver\u3068\u306e\u9593\u306e\u5dee\u7570\u3092\u7121\u8996\u3067\u304d\u308b\u30b3\u30b9\u30c8\u3067\u88dc\u3046\u3002 <\/p>\n \u3057\u304b\u3057\u3001\u6700\u3082\u7dca\u5bc6\u306a\u30eb\u30fc\u30d7\u306f\u3001\u3059\u3079\u3066\u306e\u30db\u30c3\u30c8\u30fb\u30d1\u30b9\u306b\u6cbf\u3063\u3066unboxed data\u304c\u6d41\u308c\u308b\u3088\u3046\u306b\u69cb\u6210\u3055\u308c\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u30af\u30e9\u30b9\u30ed\u30fc\u30c9\u6642\u3084 println <\/code>\u306e\u3088\u3046\u306a\u30da\u30ea\u30d5\u30a7\u30e9\u30eb\u64cd\u4f5c\u3067\u306f\u3001\u3053\u306e\u65e9\u3044\u6bb5\u968e\u3067\u30dc\u30af\u30b7\u30f3\u30b0\u304c\u6700\u3082\u6709\u7528\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059 <\/p>\n value-capable class\u306fvalue-based\u3067\u3042\u308b\u305f\u3081\u3001boxes\u306e\u540c\u671f\u5316\u3001\u53c2\u7167\u7b49\u4fa1\u6bd4\u8f03\u306b\u3088\u308b\u8b58\u5225\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5909\u66f4\u3001\u3042\u308b\u3044\u306fboxed type\u306e\u9818\u57df\u3067null\u53c2\u7167\u3092\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u53d6\u308a\u6271\u304a\u3046\u3068\u8a66\u307f\u308b\u3053\u3068\u306f\u4e0d\u9069\u5f53\u3067\u3059\u3002 <\/p>\n\n\uff08\u3053\u308c\u3089\u306e\u5236\u9650\u306f\u3001boxes\u304c\u5c06\u6765\u5225\u306e\u30d5\u30a9\u30fc\u30e0\u3092\u6301\u3063\u3066\u3044\u3066\u3082\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff09<\/p>\n<\/blockquote>\n \u5c06\u6765\u306eJVM\u306f\u3001\u3053\u308c\u3089\u306e\u30a8\u30e9\u30fc\u306e\u4e00\u90e8\u3092\u691c\u51fa\uff08\u307e\u305f\u306f\u6291\u5236\uff09\u3059\u308b\u969b\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002 (\u30a8\u30b9\u30b1\u30fc\u30d7\u89e3\u6790\u3092\u5b8c\u5168\u306b\u5fc5\u8981\u3068\u3057\u306a\u3044)\u3053\u306e\u3088\u3046\u306aboxes\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u8ffd\u52a0\u306e\u6700\u9069\u5316\u3092\u63d0\u4f9b\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3057\u304b\u3057\u3001\u3053\u306e\u6700\u5c0f\u9650\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u8a2d\u8a08\u3067\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u652f\u63f4\u3084\u6700\u9069\u5316\u306f\u4e0d\u8981\u3068\u601d\u308f\u308c\u307e\u3059\u3002 Q-types\u306f\u3001\u305d\u306e\u6027\u8cea\u4e0a\u3001Q-types\u304c\u975e\u540c\u671f\u3001\u975e\u53ef\u5909\u3001\u975enull\u3001\u304a\u3088\u3073ID\u975e\u4f9d\u5b58\u3067\u3042\u308b\u305f\u3081\u3001\u305d\u306e\u3088\u3046\u306a\u30d0\u30b0\u306e\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u3002 <\/p>\nValue operator factories<\/h4>\nQ-types\u3067\u52d5\u4f5c\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u3001value types\u306e\u4ed6\u306e\u3059\u3079\u3066\u306e\u30bb\u30de\u30f3\u30c6\u30a3\u30c3\u30af\u6a5f\u80fd\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u4ecb\u3057\u3066\u306e\u307f\uff08\u4e00\u6642\u7684\u306b\uff09\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u3053\u308c\u3089\u306b\u306f: <\/p>\n\n\u5909\u63db\u30eb\u30fc\u30c1\u30f3\uff08\u30dc\u30c3\u30af\u30b9\/ unbox\u306a\u3069\uff09\u3002\n \u30c7\u30d5\u30a9\u30eb\u30c8\u306eQ-types\u3092\u53d6\u5f97\u3059\u308b\u3002\n Q-types\u306e\u69cb\u7bc9\u3002\n Q-types\u306e\u6bd4\u8f03\u3002\n Q-types\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3002\n Q-types\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8aad\u307f\u8fbc\u3080\u3002\n Q-types\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u66f4\u65b0\u3002\n types\u304c Q-types\u3067\u3042\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\uff08\u307e\u305f\u306f\u914d\u5217\u8981\u7d20\uff09\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u3002\nQ-types\u306e\u914d\u5217\u306e\u4f5c\u6210\u3001\u8aad\u307f\u53d6\u308a\u3001\u66f8\u304d\u8fbc\u307f <\/li>\n<\/ul>\nMethodHandles.Lookup<\/code> \u304a\u3088\u3073 MethodHandles<\/code> API\u306f\u3001Q-types\uff08Class<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u8868\u3055\u308c\u308b\uff09\u3001\u304a\u3088\u3073\u307b\u3068\u3093\u3069\u3059\u3079\u3066\u306e\u3053\u308c\u3089\u306e\u6a5f\u80fd\u3092\u5b9f\u884c\u3067\u304d\u308b\u30b5\u30fc\u30d5\u30a7\u30b9\u30e1\u30bd\u30c3\u30c9\u3067\u6a5f\u80fd\u3057\u307e\u3059\u3002 <\/p>\n\n\u3053\u308c\u3089\u306e\u6f14\u7b97\u5b50\u304c\u6b20\u3051\u3066\u3044\u308b\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3068\u8003\u3048\u308b\u306e\u304c\u5f79\u7acb\u3064\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u5b9f\u9a13\u7684\u306a\u30c8\u30e9\u30f3\u30b9\u30ec\u30fc\u30bf\u304c\u5fc5\u8981\u3068\u3059\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3092\u30a8\u30df\u30e5\u30ec\u30fc\u30c8\u3059\u308b\u305f\u3081\u306b\u3001invokedynamic\u547d\u4ee4\u3068\u5171\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u7d50\u5c40\u306e\u3068\u3053\u308d\u3001\u305d\u306e\u3088\u3046\u306a\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u3044\u304f\u3064\u304b\u306e\u5f62\u5f0f\u306f\u3001JVM\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u30ec\u30d1\u30fc\u30c8\u30ea\u30fc\u306b\u300c\u9078\u629e\u7684\u306b\u6c88\u964d\u300d\u3057\u3001\u3053\u308c\u3089\u306e\u76ee\u7684\u306e\u305f\u3081\u306einvokedynamic\u306e\u4f7f\u7528\u306f\u6e1b\u5c11\u3057\u307e\u3059\u3002<\/p>\n<\/blockquote>\n \u65e2\u5b58\u306e\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30ebAPI\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8abf\u6574\u3055\u308c\u307e\u3059: <\/p>\n\nMethodType<\/code> \u30d5\u30a1\u30af\u30c8\u30ea\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u4eca\u65e5\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3092\u53d7\u3051\u5165\u308c\u308b\u306e\u3068\u540c\u3058\u3088\u3046\u306b\u3001Q-types\u3092\u8868\u3059 Class<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d7\u3051\u5165\u308c\u307e\u3059\u3002\n invoke<\/code>, asType<\/code>\u3001\u304a\u3088\u3073 explicitCastArguments<\/code> \u306f\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\/\u30e9\u30c3\u30d1\u30fc\u306e\u30da\u30a2\u3092\u6271\u3046\u3088\u3046\u306b\u3001Q-type\/L-type\u306e\u30da\u30a2\u3092\u6271\u3044\u307e\u3059\u3002\n Lookup.in<\/code> \u306f\u3001Q-type\/L-type\u306e\u30da\u30a2\u306e\u9593\u3067\uff08\u7279\u6a29\u30e2\u30fc\u30c9\u3092\u5931\u3046\u3053\u3068\u306a\u304f\uff09\u81ea\u7531\u306b\u5909\u63db\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\n Q-types\u306e\u975e\u9759\u7684\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306f\u3001L-types\u3067\u306f\u306a\u304fQ-types\u306e\u5148\u884c\u53d7\u4fe1\u5668\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d6\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u751f\u6210\u3057\u307e\u3059\u3002\n Lookup <\/code>\u306e findVirtual<\/code> \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u30af\u30e9\u30b9\u304cQ-type\u3067\u3042\u308c\u3070\u3001\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306a\u3059\u3079\u3066\u306e\u975e\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092Q-type\u3067\u516c\u958b\u3057\u307e\u3059\u3002\n Lookup<\/code> \u306e findConstructor<\/code> \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u5143\u306evalue-capable class\u306e\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306a\u3059\u3079\u3066\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u3001Q-type\u3068\u5f93\u6765\u306eL-type\u306e\u4e21\u65b9\u3067\u516c\u958b\u3057\u307e\u3059\u3002 findConstructor<\/code> \u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306e\u623b\u308a\u5024\u306e\u578b\u306f\u3001\u305f\u3068\u3048\u305d\u308c\u304cQ-type\u3067\u3042\u3063\u3066\u3082\u3001\u53c2\u7167\u30af\u30e9\u30b9\u3068\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002\n findVirtual<\/code> \u30e1\u30bd\u30c3\u30c9\u3068 findConstructor<\/code> \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u3092Q-type\u306e\u307f\u306b\u4ee3\u5165\u3059\u308b\u305f\u3081\u306e\u898f\u7d04\u3068\u3057\u3066\u3001\u5143\u306eL-type\u306e private static <\/code>\u30e1\u30bd\u30c3\u30c9\u306b\u5bfe\u3057\u3066\u30a2\u30c9\u30db\u30c3\u30af\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\uff08TBD\uff09\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \uff08\u5e30\u5c5e\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u304cL-type\u3067\u4eee\u60f3\u3068\u3057\u3066\u8868\u73fe\u3059\u308b\u306e\u304c\u56f0\u96e3\u307e\u305f\u306f\u4e0d\u4fbf\u306a\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\uff09\u3002\n identity<\/code> \u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u30d5\u30a1\u30af\u30c8\u30ea\u30e1\u30bd\u30c3\u30c9\u306f\u3001Q-types\u3092\u53d7\u3051\u5165\u308c\u307e\u3059\u3002\n empty <\/code>\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u30d5\u30a1\u30af\u30c8\u30ea\u30e1\u30bd\u30c3\u30c9\u306fQ-types\u3092\u53d7\u3051\u5165\u308c\u3001\u578b\u306e\u30c7\u30d5\u30a9\u30eb\u30c8value \u3092\u8fd4\u3059\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u751f\u6210\u3057\u307e\u3059\u3002\n \u914d\u5217\u51e6\u7406\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u30d5\u30a1\u30af\u30c8\u30ea\u306f\u3001Q-types\u3092\u53d7\u3051\u5165\u308c\u3001Q-type\u914d\u5217\u306e\u69cb\u7bc9\u3001\u8aad\u307f\u8fbc\u307f\u3001\u304a\u3088\u3073\u66f8\u304d\u8fbc\u307f\u306e\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u751f\u6210\u3057\u307e\u3059\u3002 \uff08\u3053\u308c\u3089\u306b\u306f\u3001arrayConstructor<\/code>, arrayLength<\/code>, arrayElementGetter,arrayElementSetter<\/code>\u3001\u3055\u3089\u306b\u306fvar-handle\u30d0\u30ea\u30a2\u30f3\u30c8\u304c\u542b\u307e\u308c\u307e\u3059\uff09\u95a2\u9023\u3059\u308b\u914d\u5217\u578b\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u914d\u5217\u30d5\u30a1\u30af\u30c8\u30ea\u306e\u4e00\u90e8\u307e\u305f\u306f\u3059\u3079\u3066\u304c\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\n\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u5909\u63db\u306f\u3001\u4eca\u65e5\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3092\u53d7\u3051\u5165\u308c\u308b\u306e\u3068\u540c\u3058\u3088\u3046\u306b\u3001Q-types\u3067\u52d5\u4f5c\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u53d7\u3051\u5165\u308c\u307e\u3059\u3002 <\/li>\n<\/ul>\n\n\uff08\u306f\u3044\u3001value type \u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u4eee\u60f3\u30af\u30e9\u30b9\u304cfinal<\/code> class\u306b\u5b58\u5728\u3057\u306a\u3044\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001findVirtual\u3067\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002 \u3088\u308a\u8ca7\u5f31\u306a\u9078\u629e\u80a2\u306f\u3001findSpecial\u3092\u9078\u629e\u3059\u308b\u304b\u3001\u65b0\u3057\u3044API\u30dd\u30a4\u30f3\u30c8findDirect\u3092\u7d20\u6575\u306a\u7d30\u304b\u3044\u533a\u5225\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002 Java\u306f\u300cfinal virtual\u300d\u30e1\u30bd\u30c3\u30c9\u3068\u3044\u3046\u6982\u5ff5\u306b\u65e2\u306b\u6e80\u8db3\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u79c1\u305f\u3061\u306f\u3053\u308c\u304b\u3089\u3082\u7d99\u7d9a\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<\/blockquote>\n L-types\u306e\u30e1\u30bd\u30c3\u30c9\u30fb\u30cf\u30f3\u30c9\u30eb\u30fb\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u30fb\u30e2\u30c7\u30eb\u306e\u5b9f\u9a13\u306b\u5fdc\u3058\u3066\u3001L-types\u306e\u3044\u304f\u3064\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6291\u6b62\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001value types\u306b\u6bd4\u3079\u3066\u30dc\u30c3\u30af\u30b9\u578b\u306f\u6bd4\u8f03\u7684\u30d5\u30a3\u30fc\u30c1\u30e3\u30fc\u30ec\u30b9\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002 \u3082\u3061\u308d\u3093\u3001L-type\u306e\u4eee\u60f3\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3068\u3057\u3066\u5b9f\u88c5\u3055\u308c\u308b\u3068\u3001Q-type\u3067\u306f\u306a\u304fL-type\u3067\u3042\u308b\u30ec\u30b7\u30fc\u30d0\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002 <\/p>\n \u4e00\u65b9\u3001\u524d\u8ff0\u306e\u3088\u3046\u306b\u3001\u79c1\u305f\u3061\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u4ecb\u3057\u3066\u3001Q-type\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u307e\u305f\u306f\u975e\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308b\u304b\u306e\u3088\u3046\u306b\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u9759\u7684L-type\u30e1\u30bd\u30c3\u30c9\u3092\u30d0\u30a4\u30f3\u30c9\u3059\u308b\u305f\u3081\u306e\u7279\u5225\u306a\u6163\u7fd2\u3092\u3046\u307e\u304f\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u5909\u63db\u51e6\u7406\u65b9\u5f0f\u3068\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u30e9\u30f3\u30bf\u30a4\u30e0\u3068\u306e\u9593\u306e\u526f\u5951\u7d04\u3067\u3042\u308a\u3001\u305d\u306e\u3046\u3061\u306eJVM\u306f\u8a8d\u8b58\u3055\u308c\u307e\u305b\u3093\u3002 \u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u30e9\u30f3\u30bf\u30a4\u30e0\u306b\u306e\u307f\u8868\u793a\u3055\u308c\u3001Q-type\u3067\u306e\u4f7f\u7528\u306e\u307f\u3092\u76ee\u7684\u3068\u3057\u305f\u30ed\u30b8\u30c3\u30af\u306e\u30b9\u30cb\u30da\u30c3\u30c8\u3092\u542b\u307f\u307e\u3059\u3002 \u6700\u7d42\u7684\u306b\u3082\u3061\u308d\u3093\u3001\u305d\u306e\u3088\u3046\u306a\u3053\u3068\u306f\u3059\u3079\u3066\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3068JVM\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306b\u3088\u308b\u89e3\u6c7a\u30ed\u30b8\u30c3\u30af\u306b\u79fb\u884c\u3057\u307e\u3059\u3002 <\/p>\n value-based\u306e\u30af\u30e9\u30b9\u3068\u3057\u3066\u3001Object <\/code>\u304b\u3089\u3059\u3079\u3066\u306e\u95a2\u9023\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b\u306b\u306f\u3001value-capable classes \u304c\u5fc5\u8981\u3067\u3059\u3002 \u6d3e\u751f\u3057\u305fQ-types\u306f\u3001Object <\/code>\u306e\u6a19\u6e96\u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u3057\u305f\u308a\u5fdc\u7b54\u3057\u305f\u308a\u3057\u307e\u305b\u3093\u3002 \u4e00\u81f4\u3059\u308b\u30b7\u30b0\u30cd\u30c1\u30e3\u3092\u5b9f\u88c5\u3059\u308b Object<\/code> \uff08toString <\/code>\u306a\u3069\uff09\u306e\u30e1\u30bd\u30c3\u30c9\u306b\u306e\u307f\u5fdc\u7b54\u3057\u307e\u3059\u3002 <\/p>\n \u4ee5\u4e0b\u306e\u8ffd\u52a0\u6a5f\u80fd\u306f\u3001\u307e\u3060\uff08\u307e\u3060\uff09 MethodHandle<\/code> API\u306b\u306f\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u30b5\u30dd\u30fc\u30c8\u30af\u30e9\u30b9 jdk.experimental.value.ValueType <\/code>\u306b\u914d\u7f6e\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <\/p>\n ValueType<\/code> \u306b\u306f\u6b21\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n public class ValueType<T> {\n ...\n MethodHandle defaultValueConstant();\n MethodHandle substitutabilityTest();\n MethodHandle substitutabilityHashCode();\n MethodHandle findWither(Lookup lookup, Class<?> refc,\n String name, Class<?> type);\n}<\/code><\/pre>\ndefaultValueConstant<\/code> \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u5f15\u6570\u3092\u3068\u3089\u305a\u3001\u305d\u306eQ-type\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8fd4\u3059\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u8fd4\u3057\u307e\u3059\u3002 \u3053\u306evalue type\u306e1\u8981\u7d20\u914d\u5217\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u30ed\u30fc\u30c9\u3059\u308b\u306e\u3068\u540c\u7b49\u3067\u3059\uff08\u3057\u304b\u3057\u304a\u305d\u3089\u304f\u3088\u308a\u52b9\u7387\u7684\u3067\u3059\uff09\u3002 \u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001MethodHandles.empty<\/code> \u3084\u985e\u4f3c\u306e\u30b3\u30f3\u30d3\u30cd\u30fc\u30bf\u3092\u5b9f\u88c5\u3059\u308b\u306e\u306b\u4fbf\u5229\u3067\u3059\u3002 <\/p>\n substitutabilityTest<\/code> \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6307\u5b9a\u3055\u308c\u305fQ-type\u306e2\u3064\u306e\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u6bd4\u8f03\u53ef\u80fd\u306b\u6bd4\u8f03\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u8fd4\u3057\u307e\u3059\u3002 \u5177\u4f53\u7684\u306b\u306f\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u7f6e\u63db\u53ef\u80fd\u6027\u306e\u305f\u3081\u306b\u30da\u30a2\u3054\u3068\u306b\u6bd4\u8f03\u3055\u308c\u3001\u7d50\u679c\u306f\u3059\u3079\u3066\u306e\u6bd4\u8f03\u306e\u8ad6\u7406\u7a4d\u3067\u3059\u3002 \u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3068\u53c2\u7167\u306f\u3001Java ==\u6f14\u7b97\u5b50\u306e\u9069\u5207\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u7b49\u4fa1\u3092\u6bd4\u8f03\u3059\u308b\u5834\u5408\u306b\u306e\u307f\u4ee3\u5165\u53ef\u80fd\u3067\u3059\u3002 \u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3068\u500d\u7cbe\u5ea6\u306f\u6bd4\u8f03\u306e\u524d\u306b\u6700\u521d\u306b “\u751f\u306e\u30d3\u30c3\u30c8”\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002 <\/p>\n \u540c\u69d8\u306b\u3001substitutabilityHashCode<\/code> \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6307\u5b9a\u3055\u308c\u305fQ-type\u306e\u5358\u4e00\u306e\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u53d7\u3051\u53d6\u308a\u3001\u304a\u4e92\u3044\u306b\u4ee3\u5165\u53ef\u80fd\u3067\u3042\u308b\u5834\u5408\u3001\u305d\u306e\u30bf\u30a4\u30d7\u306e2\u3064\u306e\u5024\u304c\u7b49\u3057\u304f\u306a\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u305f\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3092\u8fd4\u3057\u307e\u3059\u3002 \u305d\u3046\u3067\u306a\u3051\u308c\u3070\u7570\u306a\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3002 <\/p>\n \n\uff08\u3053\u306e\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u306e\u30b5\u30a4\u30ba\u309264\u30d3\u30c3\u30c8\u306b\u62e1\u5f35\u3059\u308b\u304b\u3069\u3046\u304b\u306f\u672a\u89e3\u6c7a\u3067\u3042\u308a\u3001\u304a\u305d\u3089\u304f\u306f\u3001\u5f93\u6765\u578b\u306e\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u5024\u3092\u4f7f\u7528\u3057\u3066\u3001value type\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u306e32\u30d3\u30c3\u30c8\u69cb\u6210\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u308b\u3067\u3057\u3087\u3046\u3002 \u30b5\u30d6\u30b3\u30fc\u30c9\u306e\u69cb\u6210\u306f\u3001\u305d\u306e\u69cb\u6210\u624b\u6cd5\u304c\u975e\u5e38\u306b\u6700\u9069\u3067\u306f\u306a\u3044\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u6700\u521d\u306f\u30d9\u30fc\u30b931\u306e\u591a\u9805\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u3067\u3057\u3087\u3046\u3002\uff09<\/p>\n<\/blockquote>\n findWither<\/code> \u30e1\u30bd\u30c3\u30c9\u306f\u3001Lookup.findSetter<\/code>\u3068\u540c\u69d8\u306b\u52d5\u4f5c\u3057\u307e\u3059\u3002 \u305f\u3060\u3057\u3001\u7d50\u679c\u306e\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306f\u5e38\u306b\u65b0\u3057\u3044\u5024\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 \u305f\u3060\u3057\u3001\u6307\u5b9a\u3057\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u65b0\u3057\u3044\u5024\u3092\u542b\u3080\u3088\u3046\u306b\u5909\u66f4\u3055\u308c\u3066\u3044\u308b\u70b9\u304c\u7570\u306a\u308a\u307e\u3059\u3002 \u5024\u306b\u306f\u540c\u4e00\u6027\u304c\u306a\u3044\u305f\u3081\u3001\u3053\u308c\u306f\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u3092\u66f4\u65b0\u3059\u308b\u552f\u4e00\u306e\u8ad6\u7406\u7684\u306b\u53ef\u80fd\u306a\u65b9\u6cd5\u3067\u3059\u3002 <\/p>\n Wither\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306e\u4f7f\u7528\u3092\u5236\u9650\u3059\u308b\u305f\u3081\u306b\u3001refc<\/code> \u30d1\u30e9\u30e1\u30fc\u30bf\u3068lookup-class\u306f ValueType<\/code> \u81ea\u4f53\u306eQ-type\u306b\u5bfe\u3057\u3066\u30c1\u30a7\u30c3\u30af\u3055\u308c\u307e\u3059\u3002 \u305d\u308c\u3089\u304c\u3059\u3079\u3066\u540c\u3058Q-type\u3067\u306a\u3044\u5834\u5408\u3001\u30a2\u30af\u30bb\u30b9\u306f\u5931\u6557\u3057\u307e\u3059\u3002 \u30a2\u30af\u30bb\u30b9\u5236\u9650\u306f\u5f8c\u3067\u5e83\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 value-type\u306f\u3082\u3061\u308d\u3093\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306a\u67af\u308c\u305f\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u540d\u524d\u4ed8\u304d\u67af\u308c\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u6700\u7d42\u7684\u306b\u30d5\u30a3\u30fc\u30eb\u30c9\u66f4\u65b0\u3092\u76f4\u63a5\u8868\u73fe\u3059\u308b\u305f\u3081\u306b\u3001withfield <\/code>\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u304c\u4f5c\u6210\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u306e\u5834\u5408\u3001\u30a2\u30af\u30bb\u30b9\u5236\u9650\u306e\u540c\u3058\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \n\u540d\u524d\u304c\u67af\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u4f55\u304b\u3092\u50b7\u3064\u3051\u305f\u308a\u3001\u58ca\u3057\u305f\u308a\u3059\u308b\u65b9\u6cd5\u3092\u610f\u5473\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u78ba\u304b\u306b\u65e5\u9670\u306e\u6d3b\u52d5\u3067\u3059\u3002 \u3053\u308c\u306f\u3001\u30ec\u30b3\u30fc\u30c9\u5024\u306e\u6a5f\u80fd\u66f4\u65b0\u3092\u5b9f\u884c\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306e\u547d\u540d\u898f\u5247\u3092\u6307\u3057\u307e\u3059\u3002 \u8907\u7d20\u6570c.withRe\uff080\uff09\u3092\u6c42\u3081\u308b\u3068\u3001\u65b0\u3057\u3044\u7d14\u7c8b\u865a\u6570\u8907\u7d20\u6570\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002 \u5bfe\u7167\u7684\u306b\u3001setter\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u547c\u3073\u51fa\u3057\u3067\u3042\u308bc.setRe\uff080\uff09\u306f\u3001\u8907\u7d20\u6570\u3092\u5909\u66f4\u3057\u3066\u3001\u975e\u30bc\u30ed\u306e\u5b9f\u6570\u6210\u5206\u3092\u524a\u9664\u3059\u308b\u3088\u3046\u3067\u3059\u3002 setter\u30e1\u30bd\u30c3\u30c9\u306f\u53ef\u5909\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u304c\u3001wither \u30e1\u30bd\u30c3\u30c9\u306fvalues\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002 \u5b9f\u969b\u306e getter\u3001setter,\u3001wither \u306e\u3044\u305a\u308c\u304b\u306e\u6a19\u6e96\u5358\u8a9e\u3067\u59cb\u307e\u3089\u306a\u304f\u3066\u3082\u3001\u30e1\u30bd\u30c3\u30c9\u306f\u5b9f\u969b\u306b getter\u3001setter,\u3001wither \u306e\u3044\u305a\u308c\u304b\u306e\u30e1\u30bd\u30c3\u30c9\u306b\u306a\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002 value types\u306e\u6700\u7d42\u7684\u306a\u898f\u5247\u306f\u3001withRe\uff080\uff09\u306e\u3088\u3046\u306a\u5f62\u5f0f\u3092\u5358\u7d14\u306bre\uff080\uff09\u306b\u8cdb\u6210\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/blockquote>\n ValueType\u306e\u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6700\u7d42\u7684\u306b Lookup<\/code> \u81ea\u4f53\u306e\u4eee\u60f3\u30e1\u30bd\u30c3\u30c9\uff08\u305d\u308c\u304c\u4e3b\u8981\u306a\u5f15\u6570\u3067\u3042\u308b\u5834\u5408\uff09\u3001\u3042\u308b\u3044\u306f MethodHandles <\/code>\u306e\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u591a\u304f\u306e\u65e2\u5b58\u306e\u30e1\u30bd\u30c3\u30c9\u304c directly express [bcbehavior]<\/a> \u540c\u7b49\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u64cd\u4f5c\u3092\u51e6\u7406\u3059\u308b\u306e\u3068\u540c\u69d8\u306b\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3068\u3057\u3066\u306e\u76f4\u63a5\u7684\u306a\u8868\u73fe\u306e\u5019\u88dc\u3067\u3059\u3002 <\/p>\n \u3053\u3053\u3067\u306f\u3001\u65b0\u3057\u3044\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u3068\u3001value types\u306b\u5bfe\u3059\u308b\u64cd\u4f5c\u306b\u5bfe\u3059\u308b\u4eee\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u632f\u308b\u821e\u3044\u3092\u307e\u3068\u3081\u305f\u8868\u3092\u793a\u3057\u307e\u3059\u3002 3\u756a\u76ee\u306e\u5217\u306f\u3001\u4eee\u60f3\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u30b9\u30bf\u30c3\u30af\u52b9\u679c\u3068\u5b9f\u969b\u306e\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306e\u578b\u306e\u4e21\u65b9\u3092\u793a\u3057\u307e\u3059\u3002 \u3053\u306e\u8868\u3067\u306f\u3001\u307b\u307c\u3059\u3079\u3066\u306e\u30bf\u30a4\u30d7\u304cQ-type\u306b\u306a\u308a\u5f97\u307e\u3059\u3002 \u3053\u308c\u306f\u3001\u300cQ<\/code>\u300d\u63a5\u982d\u8f9e\u3067\u5f37\u8abf\u3057\u3066\u3044\u308b\u4e8b\u5b9f\u3067\u3059\u3002 \u300cQC<\/code>\u300d\u30bf\u30a4\u30d7\u306f\u3001\u7279\u306b\u64cd\u4f5c\u3055\u308c\u308b\u5024\u30bf\u30a4\u30d7\u3092\u8868\u3059\u3002 \u8907\u5408 VT<QC><\/code> \u306f\u3001Q-type\u304b\u3089\u6d3e\u751f\u3057\u305f ValueType<\/code> \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u8868\u3057\u307e\u3059\u3002 <\/p>\n \u901a\u5e38\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306eQ-type\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u30a2\u30af\u30bb\u30b5\u30fc\u306e\u30ea\u30b9\u30c8\u306e\u4e0b\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u30bf\u30a4\u30d7 “RC<\/code>“\u306f\u3001\u901a\u5e38\u306eL-type\u3067\u3059\u3002 Q-types\uff08 “works like an int!”\uff09\u306f\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u914d\u5217\u8981\u7d20\u304b\u3089\u5168\u4f53\u3092\u8aad\u307f\u66f8\u304d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\nQ-type method handles & behaviors<\/caption>\nlookup expression<\/th>\n possible bytecode<\/th>\n stack effect \/ MH type<\/th>\n<\/tr>\n<\/thead>\n \nVT<QC>.defaultValueConstant()<\/code><\/p>\n<\/td>\n \n\u201cvdefault\u201d QC<\/code><\/p>\n<\/td>\n \n()<\/code> \u2192 QC<\/code><\/p>\n<\/td>\n<\/tr>\n \nVT<QC>.substitutabilityTest()<\/code><\/p>\n<\/td>\n \n?<\/p>\n<\/td>\n \n(QC QC)<\/code> \u2192 boolean<\/code><\/p>\n<\/td>\n<\/tr>\n \nVT<QC>.substitutabilityHashCode()<\/code><\/p>\n<\/td>\n \n?<\/p>\n<\/td>\n \n(QC)<\/code> \u2192 int\/long<\/code><\/p>\n<\/td>\n<\/tr>\n \nL.findGetter(QC, f, QT)<\/code><\/p>\n<\/td>\n \n\u201cvgetfield\u201d QC.f:QT<\/code><\/p>\n<\/td>\n \n(QC)<\/code> \u2192 QT<\/code><\/p>\n<\/td>\n<\/tr>\n \nVT<QC>.findWither(L, QC, f, QT)<\/code><\/p>\n<\/td>\n \n\u201cvwithfield\u201d QC.f:QT<\/code><\/p>\n<\/td>\n \n(QC, QT)<\/code> \u2192 QC<\/code><\/p>\n<\/td>\n<\/tr>\n \nL.findVirtual(QC, m, (QA)QT)<\/code><\/p>\n<\/td>\n \n\u201cvinvoke\u201d QC.m(QA)QT<\/code><\/p>\n<\/td>\n \n(QC QA)<\/code> \u2192 QT<\/code><\/p>\n<\/td>\n<\/tr>\n \nL.findGetter(RC, f, QT)<\/code><\/p>\n<\/td>\n \n\u201cgetfield\u201d RC.f:QT<\/code><\/p>\n<\/td>\n \n(RC)<\/code> \u2192 QT<\/code><\/p>\n<\/td>\n<\/tr>\n \nL.findSetter(RC, f, QT)<\/code><\/p>\n<\/td>\n \n\u201cputfield\u201d RC.f:QT<\/code><\/p>\n<\/td>\n \n(RC, QT)<\/code> \u2192 void<\/code><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u3053\u306e\u8868\u306f\u3001\u5358\u306bQ_typed\u5024\u3092\u30b3\u30d4\u30fc\u3057\u305f\u308a\u3001\u901a\u5e38\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u914d\u5217\u304b\u3089\u8aad\u307f\u8fbc\u3093\u3060\u308a\u683c\u7d0d\u3057\u305f\u308a\u3059\u308b\u591a\u304f\u306e\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u305b\u3093\u3002 \u3053\u306e\u3088\u3046\u306a\u64cd\u4f5c\u306f\u3001findStaticGetter<\/code>, findStaticSetter<\/code>, findVirtual<\/code>, findStatic<\/code>, findStaticSetter<\/code>, arrayElementSetter<\/code>, identity<\/code>, constant <\/code>\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5834\u6240\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 <\/p>\n Reminder: All this will change<\/h4>\n\u4e0a\u8a18\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u304a\u3088\u3073API\u306f\u3001Java\u306e value types \u306e\u6700\u7d42\u5f62\u5f0f<\/strong>\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u3053\u306e\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u958b\u767a\u3055\u308c\u305f\u30b3\u30fc\u30c9\u306f\u3001\u5b8c\u5168\u306a\u6a5f\u80fd\u304c\u4f5c\u6210\u3055\u308c\u305f\u3068\u304d\u306b\u306f\u3001\u5fc5\u305a\u7834\u68c4\u3057\u3066\u66f8\u304d\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n Future work<\/h4>\n\u3053\u306e\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306f\u3001\u4e8b\u5b9f\u4e0a\u4e00\u6642\u7684\u304b\u3064\u66ab\u5b9a\u7684\u3067\u3059\u3002 \u6700\u7d42\u7684\u306a\u4ed5\u69d8\u3067\u306f\u306a\u304f\u3001\u4eca\u5f8c\u306e\u4f5c\u696d\u306b\u5fc5\u8981\u306a\u57fa\u76e4\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u4eca\u5f8c\u306e\u4f5c\u696d\u306e\u4e00\u90e8\u306f\u672c\u8cea\u7684\u306b\u66ab\u5b9a\u7684\u306a\u3082\u306e\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304c\u3001\u6642\u9593\u304c\u305f\u3064\u306b\u3064\u308c\u3001\u79c1\u305f\u3061\u306e\u6210\u529f\u3092\u8e0f\u307e\u3048\u3001\u9593\u9055\u3044\u304b\u3089\u5b66\u3073\u3001\u6700\u7d42\u7684\u306b\u306f\u592a\u967d\u306e\u4e0b\u3067\u50cd\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3046\u307e\u304f\u8a2d\u8a08\u3055\u308c\u305f\u4ed5\u69d8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 <\/p>\n value types\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3053\u306e\u73fe\u5728\u306e\u4e00\u9023\u306e\u6a5f\u80fd\u306f\u3001\u64cd\u4f5c\u304c\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u610f\u56f3\u7684\u3067\u3059\u3002 \u3053\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u6b8b\u308a\u306e\u90e8\u5206\u3067\u306f\u3001\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u5b9f\u7528\u7684\u3067\u306a\u3044\u5b9f\u9a13\u3092\u53ef\u80fd\u306b\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u8ffd\u52a0\u6a5f\u80fd\u3092\u793a\u3057\u307e\u3059\u3002 <\/p>\n \u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306e\u6700\u5f8c\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306f\u5b89\u5168\u306b\u30b9\u30ad\u30c3\u30d7\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u306e\u3088\u3046\u306a\u6a5f\u80fd\u306f\u3001\u8ffd\u6c42\u3055\u308c\u305f\u5834\u5408\u306b\u306f\u3001\u72ec\u81ea\u306e\u88cf\u4ed8\u6587\u66f8\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\u6700\u5c0f\u5024\u63d0\u6848\u3067\u6b20\u843d\u3057\u3066\u3044\u308b\u6a5f\u80fd\u306b\u6c17\u4ed8\u3044\u305f\u4eba\u3005\u306b\u3068\u3063\u3066\u306f\u3001\u8208\u5473\u6df1\u3044\u3053\u3068\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 <\/p>\n Denoting Q-types in Java source code<\/h5>\n\u6700\u4f4e\u9650\u3001Q-types\u3092\u6271\u3046\u305f\u3081\u306e\u8a00\u8a9e\u306e\u5909\u66f4\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002 \u8208\u5473\u6df1\u3044\u30de\u30a4\u30af\u30ed\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u5b9f\u884c\u3059\u308b\u306b\u306f\u3001JVM\u30cf\u30c3\u30ad\u30f3\u30b0\uff08value-capable classes\uff09\u3001annotation-driven classfile\u5909\u63db\u3001\u30c0\u30a4\u30ec\u30af\u30c8\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u751f\u6210\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u5341\u5206\u3067\u3059\u3002 \u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb\u306f\u3001\u30c0\u30a4\u30ec\u30af\u30c8\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u751f\u6210\u306e\u6709\u76ca\u306a\u4ee3\u66ff\u624b\u6bb5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001Q-types\uff08\u4ee5\u4e0b\u3067\u8aac\u660e\u3057\u307e\u3059\uff09\u3092\u4f7f\u7528\u3057\u3066\u5b8c\u5168\u306b\u64cd\u4f5c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n \u305d\u308c\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u8a00\u8a9e\u30b5\u30dd\u30fc\u30c8\u306e\u3088\u3046\u306a\u3082\u306e\u306f\u3042\u308a\u307e\u305b\u3093\u3002 javac\u3092\u4f7f\u7528\u3057\u305f\u975e\u5e38\u306b\u521d\u671f\u306e\u5b9f\u9a13\u3067\u306f\u3001Q-types\u3092\u53c2\u7167\u3057\u3066\u5909\u6570\u3092Java\u30b3\u30fc\u30c9\u3067\u76f4\u63a5\u4f5c\u6210\u3059\u308b\u7c21\u5358\u306a\u65b9\u6cd5\u304c\u4f5c\u6210\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08\u3082\u3061\u308d\u3093\u6587\u8108\u4e0a\u306e\u5236\u7d04\u304c\u3042\u308a\u307e\u3059\uff09\u3002 <\/p>\n \u7279\u306b\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u3001value types\u306e\u3088\u3046\u306b\u4e00\u898b\u7b49\u4fa1\u306a\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3068\u306f\u975e\u5e38\u306b\u7570\u306a\u308b\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u5f62\u3092\u3057\u3066\u3044\u307e\u3059\u3002 (Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u69cb\u6587\u306f\u3001\u3059\u3079\u3066\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304cfinal\u3067\u3042\u308b\u9650\u308a\u3001value type\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u5b8c\u5168\u306a\u8868\u8a18\u6cd5\u3067\u3059\u3002) javac\u304c\u3001value-capable class\u306e\u5404\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u4e21\u65b9\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u30d0\u30a4\u30c8\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u8ca0\u62c5\u3092\u8ca0\u3046\u3053\u3068\u306f\u5408\u7406\u7684\u3067\u3059\u3002 <\/p>\n \u540c\u69d8\u306b\u3001value type\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u76f4\u63a5\u547c\u3073\u51fa\u3057\u3001\u304a\u3088\u3073value type \u30e1\u30bd\u30c3\u30c9\u3068\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u306f\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u30b5\u30dd\u30fc\u30c8\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u3001invokedynamic\u547c\u3073\u51fa\u3057\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u3001Java\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304b\u3089\u4f7f\u7528\u3059\u308b\u3068\u4fbf\u5229\u3067\u3059\u3002 <\/p>\n Q-replacement within value-capable classes<\/h5>\nJava\u30bd\u30fc\u30b9\u304b\u3089\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305fvalue-capable class\u306f\u3001value-capable class\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u30ed\u30fc\u30c9\u307e\u305f\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u3068\u304d\u306b\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u30ec\u30d9\u30eb\u306e\u5909\u63db\u3068\u3057\u3066\u3001Q-types\u306e\u5c0e\u5165\u3092\u5f15\u304d\u8d77\u3053\u3059\u9078\u629e\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u304a\u3088\u3073\u30e1\u30bd\u30c3\u30c9\u3067\u8ffd\u52a0\u306e\u6ce8\u91c8\uff08\u307e\u305f\u306f\u5c5e\u6027\uff09\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u6709\u7528\u3068\u601d\u308f\u308c\u308b2\u3064\u306e\u5909\u63db\u306f\u3001Q-replacement <\/em>\u304a\u3088\u3073 Q-overloading <\/em>\u3068\u547c\u3070\u308c\u3066\u3082\u3088\u3044\u3002 \u6700\u521d\u306fL-types\u3092\u524a\u9664\u3057\u3001Q-types\u3067\u7f6e\u304d\u63db\u3048\u307e\u3059\u304c\u30012\u756a\u76ee\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u5358\u7d14\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u30b3\u30d4\u30fc\u3057\u3001\u8a18\u8ff0\u5b50\u306eL-types \u306e\u4e00\u90e8\u307e\u305f\u306f\u5168\u90e8\u3092\u5bfe\u5fdc\u3059\u308bQ-types\u3067\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002 \u3053\u306e\u30a2\u30a4\u30c7\u30a2\u306e\u30bb\u30c3\u30c8\u306f\u3001JDK-8164889<\/a>\u3068\u3057\u3066\u8ffd\u8de1\u3055\u308c\u307e\u3059\u3002 <\/p>\n annotation-driven Q-replacment\u306b\u4ee3\u308f\u308b\u3082\u306e\u306f\u5b9f\u9a13\u7684\u306a\u8a00\u8a9e\u6a5f\u80fd\u3067\u3042\u308a\u3001Q-types\u3092Java\u30bd\u30fc\u30b9\u3067\u76f4\u63a5\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u5b9f\u9a13\u306f\u3001Valhalla Project\u306e\u4e00\u74b0\u3068\u3057\u3066\u884c\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u3001\u65e9\u6025\u306b\u5909\u63db\u304c\u4e0d\u8981\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n More bytecodes<\/h5>\n\u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb defaultValueConstant<\/code> \u306f\u3001\u65b0\u3057\u3044 vdefault<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3001\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d aconst_null<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb substitutabilityTest<\/code> \u306f\u3001\u65b0\u3057\u3044 vcmp<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3001\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d if_acmpeq<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb findWither<\/code> \u306f\u3001\u65b0\u3057\u3044 vwithfield<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb findGetter<\/code> \u306f\u3001\u9069\u5207\u306b\u62e1\u5f35\u3055\u308c\u305f getfield<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayConstructor<\/code> \u306f\u3001\u9069\u5207\u306b\u5f37\u5316\u3055\u308c\u305f anewarray<\/code> \u307e\u305f\u306f multianewarray<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayElementGetter<\/code> \u306f\u3001\u65b0\u3057\u3044 vaload<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d\u306e aaload<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayElementSetter<\/code> \u306f\u3001\u65b0\u3057\u3044 vastore<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u307e\u305f\u306f\u63a5\u982d\u8f9e\u4ed8\u304d\u306e aastore<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u30e9\u30a4\u30d6\u30e9\u30ea\u30e1\u30bd\u30c3\u30c9\u30cf\u30f3\u30c9\u30eb arrayLength<\/code> \u306f\u3001\u9069\u5207\u306b\u5f37\u5316\u3055\u308c\u305f arraylength<\/code> \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <\/p>\n \u3053\u306e\u30c7\u30b6\u30a4\u30f3\u306e\u6700\u7d42\u7684\u306a “\u30b9\u30a4\u30fc\u30c8\u30b9\u30dd\u30c3\u30c8”\u306f\u3001Q-types\u3060\u3051\u3067\u306a\u304f\u3042\u3089\u3086\u308b\u30bf\u30a4\u30d7\u8a18\u8ff0\u5b50\u306b\u8a00\u53ca\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3001values\u3001\u304a\u3088\u3073\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3092\u5bfe\u79f0\u7684\u306b\u6271\u3046\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\uff08\u307e\u305f\u306f\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u4ed8\u304d\u30de\u30af\u30ed\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\uff09\u306e\u5358\u4e00\u306e\u30bb\u30c3\u30c8\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u300c\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u300d\u306f\u3001uload<\/code>, ustore<\/code>, uinvoke<\/code>, ucmp<\/code>, u2u <\/code>\u306a\u3069\u306e\u72ec\u81ea\u306e\u547d\u540d\u898f\u5247\u306b\u670d\u5f93\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u304c\u5024\u3060\u3051\u3067\u52d5\u4f5c\u3059\u308b\u5834\u5408\u3001v<\/code> \u547d\u540d\u898f\u5247\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 <\/p>\n \u8a18\u8ff0\u5b50\u578b I<\/code> \u306f\u3001int\u3001short\u3001boolean\u3001char\u3001\u304a\u3088\u3073byte\u3092\u6271\u3046\u305f\u3081\u306bJVM\u3067\u4f7f\u7528\u3055\u308c\u3001\u3059\u3079\u3066\u306e\u7a2e\u985e\u306eL-types\u3092\u4fdd\u6301\u3059\u308b\u305f\u3081\u306b\u8a18\u8ff0\u5b50\u578b L<\/code> \uff08\u30af\u30e9\u30b9\u4ed8\u304d\uff09\u304c\u4f7f\u7528\u3055\u308c\u308b\u306e\u3068\u540c\u69d8\u306b\u3001\u8a18\u8ff0\u5b50\u578b Q<\/code> \uff08\u30af\u30e9\u30b9\u4ed8\u304d\uff09\u306f\u3001\u3042\u3089\u3086\u308b\u7a2e\u985e\u306eK-types\u3092\u904b\u3076\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u4e8b\u5b9f\u30014\u3064\u306eI-types\u3068L-types\u3068Q-types\u306e\u7121\u9650\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u5b9f\u969b\u306b\u306fJVM\u306b\u306f3\u3064\u306e\u30ad\u30e3\u30ea\u30a2\u30bf\u30a4\u30d7\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002 \uff08long\u578b\u3001float\u578b\u3001double\u578b\u306e\u5358\u5f62\u30ad\u30e3\u30ea\u30e4\u578b\u3082\u3042\u308a\u307e\u3059\uff09L-type\u30ad\u30e3\u30ea\u30e4\u306f\u30d2\u30fc\u30d7\u3092\u6307\u3059\u5358\u4e00\u306e\u6a5f\u68b0\u8a9e\u3067\u3059\u304c\u3001Q-type\u30ad\u30e3\u30ea\u30e4\u306f\u3088\u308a\u8907\u96d1\u3067\u3059\u3002 \u3044\u304f\u3064\u304b\u306evalue\u306e “\u30da\u30a4\u30ed\u30fc\u30c9”\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u306e\u30b5\u30a4\u30ba\u3068\u30ec\u30a4\u30a2\u30a6\u30c8\uff08\u5c11\u306a\u304f\u3068\u3082GC\u306e\uff09\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002 \u5b9f\u969b\u306b\u306f\u3001value\u2019s class\u3082\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u7d50\u5c40\u3001Q-type\u306e\u30ad\u30e3\u30ea\u30a2\u306f\u5b9f\u969b\u306b\u306f\u30d0\u30c3\u30d5\u30a1\u306e\u578b\u4ed8\u304d\u30ed\u30b1\u30fc\u30bf\u306e\u4e00\u7a2e\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u4efb\u610f\u306e\u5834\u6240\uff08Java\u30d2\u30fc\u30d7\u3001C\u30d2\u30fc\u30d7\u3001\u30b9\u30ec\u30c3\u30c9\u30b9\u30bf\u30c3\u30af\uff09\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3053\u306e\u5185\u90e8\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u30d2\u30fc\u30d7\u5185\u306eJava\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3068\u6574\u5217\u3055\u305b\u308b\u3068\u3001\u5358\u7d14\u306b\u30dd\u30a4\u30f3\u30bf\u3092\u623b\u3059 vbox<\/em> \u3084 vunbox<\/em> \u306a\u3069\u306e\u6700\u9069\u5316\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002 \u3055\u3089\u306b\u91cd\u8981\u306a\u3053\u3068\u306f\u3001\u30bf\u30b0\u30d3\u30c3\u30c8\u306e\u53cd\u8ee2\u3060\u3051\u3067\u3001\u4efb\u610f\u306eQ-type\u307e\u305f\u306f\u4efb\u610f\u306eU-type \u3082\u52b9\u7387\u7684\u306b\u9001\u4fe1\u3067\u304d\u308b\u3001\u6700\u7d42\u7684\u306aJVM\u30ad\u30e3\u30ea\u30a2\u30bf\u30a4\u30d7\u3067\u3042\u308bU-type\u30ad\u30e3\u30ea\u30a2\u3092\u52b9\u7387\u7684\u306b\u4f5c\u6210\u3067\u304d\u308b\u3053\u3068\u3067\u3059\u3002 <\/p>\n U-types\u304c\u5fc5\u8981\u3067\u3042\u308b\u3068\u5224\u660e\u3057\u305f\u5834\u5408\u3001\u305d\u308c\u4ee5\u4e0a\u306eU-mode\u547d\u4ee4\u304c\u4f5c\u6210\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3002 \u3057\u304b\u3057\u3001\u305d\u306e\u5834\u5408\u3001Q-type\u30ad\u30e3\u30ea\u30a2\u3068U-type\u30ad\u30e3\u30ea\u30a2\u3068\u304c\u540c\u4e00\u3067\u3042\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001Q-mode\u3068U-mode\u306e\u547d\u4ee4\u3092\u5927\u304d\u304f\u7d71\u5408\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3042\u308b\u3002 \u691c\u8a3c\u8005\u306f\u3001Q-type\u304c\u300cpure value\u300d\u3067\u3042\u3063\u305f\u304b\u3001U-type\u3068\u306e\u7d50\u5408\u306b\u3088\u3063\u3066\u300cpolluted(\u6c5a\u67d3\u3055\u308c\u305f)\u300d\u304b\u3069\u3046\u304b\u3092\u8ffd\u8de1\u3057\u7d9a\u3051\u308b\u3060\u308d\u3046\u3002 \u8ad6\u7406\u7684\u306b\u306f\u3001U-types\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u3068 null \u3092\u6301\u3061\u307e\u3059\u304c\u3001Q-types\u306f\u305d\u3046\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 \u3057\u304b\u3057\u5171\u901a\u306e\u30ad\u30e3\u30ea\u30a2\u30bf\u30a4\u30d7\u306f\u3001\u3059\u3079\u3066\u306eQ-type values\u3068\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u3001\u53c2\u7167\u5024\u306e\u305f\u3081\u306b\u5225\u306e\u30bf\u30b0\u3092\u4ed8\u3051\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3053\u308c\u3092\u5358\u7d14\u306b\u30e2\u30c7\u30eb\u5316\u3067\u304d\u307e\u3059\u3002 \u7d50\u5c40\u3001Q-mode\u547d\u4ee4\u306e\u5927\u534a\u306f\u304a\u305d\u3089\u304fU-mode\u547d\u4ee4\u306b\u6607\u683c\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3092\u3044\u304f\u3064\u304b\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067\u6700\u5927\u306e\u67d4\u8edf\u6027\u304c\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p>\n \u6700\u5c0f\u9650\u306e\u63d0\u6848\u306f\u3001U-types\u3092\u5fc5\u8981\u3068\u3057\u307e\u305b\u3093\u3002 \u306a\u305c\u306a\u3089\u3001\u6c4e\u7528\u6027\u306e\u3042\u308bvalues\u3092\u8a66\u3059\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3057\u3001\u3059\u3079\u3066\u306e\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u547c\u3073\u51fa\u3057\u304c\uff08\u73fe\u5728\u306f\uff09L-type\u306e\u30dc\u30c3\u30af\u30b9\u5316\u3055\u308c\u305fVCC\u306b\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u308b\u304b\u3089\u3067\u3059\u3002 <\/p>\nMore data structures<\/h5>\n\u6700\u5c0f\u9650\u306e\u63d0\u6848\u3067\u306f\u3001value types\u306e\u3059\u3079\u3066\u306e\u7279\u5fb4\u306e\u81ea\u7531\u306a\u76f8\u4e92\u9069\u7528\u306b\u3088\u3063\u3066\u6697\u793a\u3055\u308c\u308b\u69d8\u3005\u306a\u30b3\u30fc\u30ca\u30fc\u30b1\u30fc\u30b9\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u3053\u308c\u3089\u306e\u30b3\u30fc\u30ca\u30fc\u30b1\u30fc\u30b9\u3067\u306e\u5857\u308a\u3064\u3076\u3057\u306f\u4fbf\u5229\u3067\u3059\u3002 \u3055\u3089\u306b\u3001value types\uff08\u304a\u3088\u3073\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\uff09\u306e\u5236\u9650\u306f\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u524a\u9664\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u6a5f\u80fd\u7684\u5897\u52a0\u306b\u306f\u3001\u69d8\u3005\u306a\u6bb5\u968e\u3067: <\/p>\n\nvalue types\u304c\u975e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\uff08Q-types\u3001L-types\uff09\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5ba3\u8a00\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002\n \u3059\u3079\u3066\u306evalue types\u306e\u30d5\u30e9\u30c3\u30c8\u5316\u3055\u308c\u305f\u914d\u5217\u3092\u5b9f\u88c5\u3059\u308b\u3002\n values\u3078\u306e\u30a2\u30c8\u30df\u30c3\u30af\u306a\u30a2\u30af\u30bb\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\uff08\u305f\u3068\u3048\u3070\u3001volatile <\/code>\u3068\u30de\u30fc\u30af\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\uff09\u3002\n values\u306e\u30b9\u30fc\u30d1\u30fc\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3059\u308b\uff08\u901a\u5e38\u306eJVM\u5236\u7d04\u4ed8\u304d\u30a2\u30e9\u30a4\u30f3\u30e1\u30f3\u30c8\uff08\u901a\u5e3864\u30d3\u30c3\u30c8\uff09\u3092\u8d85\u3048\u3066\uff09\u3002\n value types\u306eJVM\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u8a73\u7d30\u306e\u4f4e\u30ec\u30d9\u30eb\uff08\u201cunsafe\u201d\uff09\u53cd\u6620\u3092\u63d0\u4f9b\u3059\u308b\u3002\n value-type\u306e\u30b3\u30f3\u30c6\u30ca\u3092\u4f7f\u7528\u3057\u3066\u3001\u5916\u90e8\u578b\uff08C unsigned<\/code>\uff09\u307e\u305f\u306f\u30bb\u30fc\u30d5\u30dd\u30a4\u30f3\u30bf\uff08\u305f\u3068\u3048\u3070\u3001\u30a2\u30c9\u30ec\u30b9+\u5883\u754c\u3068\u578b+\u30b9\u30b3\u30fc\u30d7\uff09\u3092\u8868\u3057\u307e\u3059\u3002\n numeric type\u306e\u30bf\u30ef\u30fc\u3092\u8868\u3059\u306b\u306f\u3001value-type\u306e\u30b3\u30f3\u30c6\u30ca\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\n \u4e0a\u8a18\u306e\u3059\u3079\u3066\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30b9\u30c8\u30ec\u30fc\u30b8\u5bc6\u5ea6\u3092\u6700\u9069\u5316\u3059\u308b\u3002\n Integer<\/code> \u3084Q-type boxes\u306a\u3069\u306evalue-based\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u578b\u306e\u8aa4\u4f7f\u7528\u3092\u691c\u51fa\u307e\u305f\u306f\u9632\u6b62\u3059\u308b\u305f\u3081\u306b\u4f55\u304b\u3092\u884c\u3044\u307e\u3059\u3002 \u305f\u3068\u3048\u3070\u3001\u8ab0\u304b\u304c\u305d\u308c\u3089\u3092\u540c\u671f\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u30a8\u30e9\u30fc\u3092\u6295\u3052\u307e\u3059\u3002\n value types\u3092\u76f4\u63a5\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3002\n \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\uff08\u91cd\u8981\u306a\uff09\u5b9f\u884c\u3092\u542b\u3080\u3001value types\u3067\u76f4\u63a5\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u5b9f\u88c5\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002\n \u4ee5\u4e0b\u306e\u305f\u3081\u306e\u65b9\u6cd5\u3092\u30ef\u30fc\u30af\u30a2\u30a6\u30c8\n Q-type value\u307e\u305f\u306fL-type value\u306e\u3044\u305a\u308c\u304b\u3092\u76f4\u63a5\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3001\u5b89\u5168\u306b\u30bf\u30b0\u4ed8\u3051\u3055\u308c\u305f\u4e92\u3044\u306b\u7d20\u306a\u7d50\u5408\u578b\uff08\u201cP-types\u201d\uff09\u3092\u63d0\u4f9b\u3059\u308b\u3002\n \u5370\u5237\u3001\u6bd4\u8f03\u3001\u304a\u3088\u3073\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u7528\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u542b\u3080\u3001values\u306e\u6a19\u6e96\u5f62\u72b6\u3092\u4f5c\u6210\u3059\u308b\u3002\nQ-types\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u7279\u6b8a\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u3068\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u3092\u8ffd\u52a0\u3059\u308b\u3002 \uff08\u5927\u304d\u306a\u3082\u306e\uff01\uff09 <\/li>\n<\/ul>\nvalue types\u304c\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068\u5b8c\u5168\u306b\u7d71\u5408\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001Q-type\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u304b\u3089 default<\/code> \u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3001values\u3068\u6c4e\u7528\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304a\u3088\u3073\u30c7\u30fc\u30bf\u69cb\u9020\uff08\u30bd\u30fc\u30c8\u3084 TreeMap <\/code>\u306a\u3069\uff09\u3068\u306e\u76f8\u4e92\u904b\u7528\u6027\u306e\u91cd\u8981\u306a\u5f62\u5f0f\u3067\u3059\u3002 \u6700\u5c0f\u9650\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3053\u306e\u4f5c\u696d\u3092\u884c\u3046\u306b\u306f\u3001value\u3092\u30dc\u30af\u30b7\u30f3\u30b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u4e0d\u5feb\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u30dc\u30c3\u30af\u30b9\u3067\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u5b8c\u5168\u306a\u5b9f\u88c5\u3067\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u7279\u5b9a\u306evalue type\u306b\u6700\u9069\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u307e\u305f\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u30e1\u30bd\u30c3\u30c9\u81ea\u4f53\u304c\u3001value-based types\uff08\u30cc\u30eb\u307e\u305f\u306f\u540c\u671f\u306a\u3057\u3001\u5236\u9650\u4ed8\u304d==\u306a\u3069\uff09\u306b\u9069\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u5fc5\u8981\u3067\u3059\u3002 \u3053\u308c\u306b\u306f\u3001\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u305f\u3055\u3089\u306a\u308b\u4f5c\u696d\u304c\u5fc5\u8981\u3067\u3059\u3002 <\/p>\n interface-array type I[] <\/code>\u304cvalue type QT <\/code>\u306e\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u3067\u3042\u3063\u3066\u3082\u3001value-bearing array type QT[]<\/code> \u3092interface-array type I[]<\/code>\u306e\u30b5\u30d6\u30bf\u30a4\u30d7\u306b\u3059\u308b\u3053\u3068\u306f\u96e3\u3057\u3044\u3088\u3046\u3067\u3059\u3002 \u3053\u308c\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u306f\u3001JVM\u578b\u69cb\u9020\u306e\u3055\u3089\u306a\u308b\u4f5c\u696d\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002 Interface types I<\/code> \u306f\u73fe\u5728L-type\u30ad\u30e3\u30f3\u30d7\u306b\u3057\u3063\u304b\u308a\u3068\u3044\u307e\u3059\u3002 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u914d\u5217\u306f\u53c2\u7167\u914d\u5217\u306a\u306e\u3067\u3001Object []\u306e\u30b5\u30d6\u30bf\u30a4\u30d7\u3067\u3042\u308a\u3001\u3057\u305f\u304c\u3063\u3066\u53c2\u7167\u914d\u5217\u3068\u3057\u3066\u898b\u3048\u307e\u3059\u3002 \u3057\u304b\u3057\u3001value types QT<\/code> \u306e\u914d\u5217\u306f\u3001\uff08\u900f\u904e\u7684\u306b\uff09\u53c2\u7167\u306e\u914d\u5217\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002 <\/p>\nBridge-o-matic<\/h5>\n\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001Q\u3067\u7f6e\u304d\u63db\u3048\u3089\u308c\u305fAPI\u30dd\u30a4\u30f3\u30c8\u3092\u30af\u30e9\u30b9\u306b\u4f9b\u7d66\u3059\u308b\u3053\u3068\u306f\u3001\u9069\u5207\u306a\u30d6\u30ea\u30c3\u30b8\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u306e\u5358\u306a\u308b\u554f\u984c\u3067\u3059\u3002 \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u307e\u305f\u306f\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u306f\u3001\u30d6\u30ea\u30c3\u30b8\u304c\u9069\u5207\u306b\u7de8\u6210\u3055\u308c\u305f\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\uff08\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067\u306f\u306a\u304f\uff09\u5834\u5408\u3001\u305d\u306e\u3088\u3046\u306a\u30d6\u30ea\u30c3\u30b8\u30e1\u30bd\u30c3\u30c9\u306e\u30dc\u30c7\u30a3\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u6027\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u30a2\u30a4\u30c7\u30a2\u306e\u30bb\u30c3\u30c8\u306b\u306f\u3001\u6a19\u6e96 equals<\/code>, hashCode,toString <\/code>\u30e1\u30bd\u30c3\u30c9\u306e\u81ea\u52d5\u751f\u6210\u3092\u542b\u3080\u591a\u304f\u306e\u8ffd\u52a0\u7528\u9014\u304c\u3042\u308a\u307e\u3059\u3002 JDK-8164891<\/a>\u3068\u3057\u3066\u8ffd\u8de1\u3055\u308c\u307e\u3059\u3002 <\/p>\n Natural (JVM-native) value-type classfiles<\/h5>\n\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306f\u3001box-first\u306e\u8aad\u307f\u8fbc\u307f\u9806\u3001POJO types\u306e\u8aad\u307f\u8fbc\u307f\u3001\u305d\u308c\u3089\u304b\u3089values\u3068box types\u306e\u5c0e\u51fa\u3067\u59cb\u307e\u308a\u307e\u3059\u3002 box types\uff08\u6700\u521d\u306f\uff09\u306f\u5358\u7d14\u306bPOJO types \u3067\u3042\u308a\u3001value types\u306fPOJO type\u304b\u3089\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u3092\u62bd\u51fa\u3057\u3066\u5185\u90e8\u7684\u306b\u6d3e\u751f\u3057\u305f\u69cb\u9020\u4f53\u3067\u3059\u3002 value type\u3060\u3051\u3092\u5bfe\u8c61\u3068\u3057\u305f\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u3063\u3066\u3082\u3001\u6700\u521d\u306fPOJO\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3053\u308c\u306f\u3001\u5909\u66f4\u3055\u308c\u305f\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u3088\u3063\u3066\u76f4\u63a5\u6307\u5b9a\u3055\u308c\u305fvalue types\u3068\u3001value types \u306e\u30ed\u30fc\u30c9\u4e2d\u306b\u5c0e\u51fa\u3055\u308c\u305f\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306bvalue-first\u306e\u30ed\u30fc\u30c9\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n POJO-based\u306e\u30ed\u30fc\u30c9\u30fb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u6642\u4ee3\u9045\u308c\u306b\u306a\u308b\u306e\u3067\u3001\u30dc\u30c3\u30af\u30b9\u81ea\u4f53\u306f\u5f15\u304d\u7d9a\u304dPOJO-shaped\u306evalue types\u3067\u3042\u308b\u304b\u3001\u5225\u306e\u30d5\u30a9\u30fc\u30e0\u3092\u4f7f\u7528\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <\/p>\n \u3053\u306e\u5909\u66f4\u306f\u3001value-first \u8a2d\u8a08\u3067\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u975e\u6a19\u6e96\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306b\u3001value types\u306e\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30c4\u30fc\u30eb\uff08\u30b3\u30f3\u30d1\u30a4\u30e9\u3001\u30c7\u30d0\u30c3\u30ac\u3001IDE\u306a\u3069\uff09\u3092\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u6bd4\u8f03\u7684\u9ad8\u984d\u306b\u306a\u308a\u307e\u3059\u3002 \u4e0a\u8a18\u306e\u3088\u3046\u306b\u3001\u6700\u5c0f\u9650\u306e\u63d0\u6848\u306e\u5384\u4ecb\u306a\u70b9\u306e\u3044\u304f\u3064\u304b\u306f\u3001\u30c4\u30fc\u30eb\u30c1\u30a7\u30fc\u30f3\u306e\u5909\u66f4\u3092\u5fc5\u8981\u3068\u3059\u308b\u6a5f\u80fd\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u6ce8\u610f\u304c\u6255\u308f\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u6a5f\u80fd\u306b\u306f: <\/p>\n\nValue-first\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff08\u4f8b\u3048\u3070\u3001\u30d8\u30c3\u30c0\u306e ACC_VALUE<\/code> \u30d3\u30c3\u30c8\uff09\u3002\n Q-types\u306e\u30bd\u30fc\u30b9\u8a00\u8a9e\u306b\u3088\u308b\u8868\u8a18\u3002\n Q-types\u3068Q-types\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3057\u3066\u30bf\u30a4\u30d7\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u76f4\u63a5\u30ed\u30fc\u30c9\u3059\u308b\u305f\u3081\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3002\n Q-types\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u76f4\u63a5\u547c\u3073\u51fa\u3059\u305f\u3081\u306e\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3002\n\u914d\u5217\u3001\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306a\u3069\u3068value types\u306e\u5b8c\u5168\u306a\u7d71\u5408 <\/li>\n<\/ul>\nHeisenboxes<\/h5>\n\u4e0a\u3067\u793a\u5506\u3057\u305f\u3088\u3046\u306b\u3001values\u306eL-types\u306fvalue-based\u3067\u3042\u308a\u3001JVM\u306e\u4e00\u90e8\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u3053\u308c\u3092\u5b9f\u884c\u3057\u3088\u3046\u3068\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059: <\/p>\n\nboxed Q-type value\u3092\u540c\u671f\u3059\u308b\u3068\u3001IllegalMonitorStateException <\/code>\u306e\u3088\u3046\u306a\u4f8b\u5916\u304c\u30b9\u30ed\u30fc\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\n \u53c2\u7167\u6bd4\u8f03\uff08Java\u6f14\u7b97\u5b50==\u307e\u305f\u306f acmp<\/code> \u547d\u4ee4\uff09\u306f\u3001\u4ee5\u524d\u306b\u53c2\u7167\u304cfalse\u3092\u8fd4\u3059\u5834\u5408\u3067\u3082\u30012\u3064\u306e\u540c\u7b49\u306eboxed Q-type values\u306b “true”\u3092\u8fd4\u3057\u3001\u4ee5\u524d\u306b “true”\u3092\u8fd4\u3057\u305f\u3068\u304d\u306b “false”\u3092\u8fd4\u3057\u307e\u3059\u3002 \u305d\u306e\u3088\u3046\u306a\u5909\u5316\u306f\u3082\u3061\u308d\u3093\u3001\u57fa\u790e\u3068\u306a\u308bQ-types\u306e\u4ee3\u66ff\u53ef\u80fd\u6027\u306e\u8ad6\u7406\u306b\u5f93\u3046\u3053\u3068\u306b\u306a\u308b\u3002 \u304b\u3064\u3066\u306f\u7b49\u3057\u3044\u53c2\u7167\u3068\u3057\u3066\u691c\u51fa\u3055\u308c\u305f2\u3064\u306e\u30dc\u30c3\u30af\u30b9\u306f\u3001\u76f8\u4e92\u306b\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u53ef\u80fd\u3067\u3042\u3063\u305f\u3002\n setAccessible<\/code> \u304c\u547c\u3073\u51fa\u3055\u308c\u305f\u5f8c\u3067\u3042\u3063\u3066\u3082\u3001boxed Q-type values\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306bvalues\u3092\u53cd\u6620\u3057\u3066\u683c\u7d0d\u3057\u3088\u3046\u3068\u3059\u308b\u8a66\u307f\u304c\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\nsetAccessible<\/code> \u304c\u547c\u3073\u51fa\u3055\u308c\u305f\u5f8c\u3067\u3082\u3001\u30dc\u30c3\u30af\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u53cd\u5c04\u7684\u306b\u547c\u3073\u51fa\u305d\u3046\u3068\u3059\u308b\u8a66\u307f\u304c\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 <\/li>\n<\/ul>\n\u76e3\u67fb\u304b\u3089\u76e3\u67fb\u307e\u3067\u306e\u9593\u3001\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u72b6\u614b\u304c\u4e0d\u78ba\u5b9f\u306a\u30dc\u30c3\u30af\u30b9\u306f\u3001\u300cheisenbox\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002 \u3053\u306e\u985e\u63a8\u3092\u8ffd\u6c42\u3059\u308b\u305f\u3081\u306b\u30012\u3064\u306eheisenboxes\u306e true<\/code> \u306e\u53c2\u7167\u5e73\u7b49\uff08==<\/code>, acmp<\/code>\uff09\u76e3\u67fb\u306f\u5b8c\u5168\u306b\u76f8\u4e92\u7f6e\u63db\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u305d\u308c\u3089\u3092\u540c\u3058\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u300c\u5d29\u58ca\u300d\u3059\u308b\u306e\u3067\u3001\u305d\u308c\u3089\u306eQ-values\u3082\u540c\u7b49\u3067\u3059\u3002 \u53c2\u7167\u306e2\u3064\u306e\u30b3\u30d4\u30fc\u306f\u3001boxed values\u306e\u7d99\u7d9a\u7684\u306a\u76f8\u4e92\u7f6e\u63db\u6027\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u5f8c\u3067\u975e\u516c\u5f0f\u3067\u3042\u308b\u3053\u3068\u3092\u5831\u544a\u3057\u3066\u89e3\u4f53\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u5e73\u7b49\u306e\u8ff0\u8a9e\u306f\u30b7\u30e5\u30ec\u30fc\u30c7\u30a3\u30f3\u30ac\u30fc\u306e\u732b\u304c\u5165\u3063\u3066\u3044\u308b\u30dc\u30c3\u30af\u30b9\u306b\u914d\u7dda\u3057\u3066\u8abf\u3079\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u591a\u304f\u306e\u56f0\u60d1\u3068\u60b2\u3057\u3044\u7d50\u679c\u304c\u3042\u308a\u307e\u3059… <\/p>\n\u3053\u306e\u30a2\u30a4\u30c7\u30a3\u30a2\u306e\u30bb\u30c3\u30c8\u306f\u3001JDK-8163133<\/a>\u3068\u3057\u3066\u8ffd\u8de1\u3055\u308c\u307e\u3059\u3002 <\/p>\n References<\/h4>\n[values]: http:\/\/cr.openjdk.java.net\/~jrose\/values\/values.html<\/a> [valhalla-dev]: http:\/\/mail.openjdk.java.net\/pipermail\/valhalla-dev\/<\/a> [goetz-jvmls15]: http:\/\/www.oracle.com\/technetwork\/java\/jvmls2015-goetz-2637900.pdf<\/a> [valsem-0411]: http:\/\/mail.openjdk.java.net\/pipermail\/valhalla-spec-experts\/2016-April\/000118.html<\/a> [simms-vbcs]: http:\/\/mail.openjdk.java.net\/pipermail\/valhalla-dev\/2016-June\/001981.html<\/a> [graves-jvmls16]: http:\/\/youtu.be\/Z2XgO1H6xPM?list=PLX8CzqL3ArzUY6rQAQTwI_jKvqJxrRrP_<\/a> [value-based]: http:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/lang\/doc-files\/ValueBased.html<\/a> [JEP-11]: http:\/\/openjdk.java.net\/jeps\/11<\/a> [goetz-jvmls16]: http:\/\/www.youtube.com\/watch?v=Tc9vs_HFHVo<\/a> [Long2.java]: http:\/\/hg.openjdk.java.net\/panama\/panama\/jdk\/file\/70b3ceb485cf\/src\/java.base\/share\/classes\/java\/lang\/Long2.java<\/a> [cimadamore-refman]: http:\/\/cr.openjdk.java.net\/~mcimadamore\/reflection-manifesto.html<\/a> [bcbehavior]: http:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/lang\/invoke\/MethodHandles.Lookup.html#equiv<\/a> [JDK-8164891]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8164891<\/a> [JDK-8177279]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8177279<\/a> [JDK-8164889]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8164889<\/a> [JDK-8163133]: http:\/\/bugs.openjdk.java.net\/browse\/JDK-8163133<\/a><\/p>\n \u4ee5\u4e0a\u3001HTML\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30b3\u30d4\u30da\u3057\u305f\u306e\u3067\u5909\u306a\u611f\u3058\u306b\u306a\u3063\u3066\u307e\u3059\u3002(^_^;<\/p>\n \u305d\u308c\u4ee5\u524d\u306b\u3053\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u958b\u767a\u306b\u643a\u308f\u308b\u4eba\u5411\u3051\u306e\u3088\u3046\u3067\u79c1\u306b\u306f\u4f55\u306e\u4fa1\u5024\u3082\u306a\u3044\u3082\u306e\u3067\u3057\u305f\u3002(>_<\uff61)<\/p>\n Hatena \u30bf\u30b0: Java<\/a><\/div>\n\n <\/a><\/div>\n <\/a><\/div>\n <\/g:plusone><\/div>\n Tweet<\/a><\/div>\n <\/div>\n \n","protected":false},"excerpt":{"rendered":"Minimal Value Types April 2017: Minimal Edition (v. 0.4) \u3092\u307b\u3068\u3093\u3069\u6a5f\u68b0\u7ffb\u8a33\u3057\u3066\u307f\u305f\u3002 Minimal Value Types April 2017: Minimal Edition (v. 0.4) John Rose, Brian Goetz \u201cWhat we do in the shadows reveals our true values.\u201d Background value types\u306efirst public proposal [values] \u304b\u30893\u5e74\u5f8c\u3001Java\u30b3\u30f3\u30d1\u30a4\u30e9\u3001\u30af\u30e9\u30b9\u30fb\u30d5\u30a1\u30a4\u30eb\u30fb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3001VM\u3067\u6d3b\u767a\u306a\u30d7\u30ed\u30c8\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[17],"class_list":["post-2407","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2407"}],"version-history":[{"count":1,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2407\/revisions"}],"predecessor-version":[{"id":2408,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2407\/revisions\/2408"}],"wp:attachment":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2407"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

John Rose, Brian Goetz<\/h6>\n\u201cWhat we do in the shadows reveals our true values.\u201d<\/em> <\/p>\n

John Rose, Brian Goetz<\/h6>\n
\u201cWhat we do in the shadows reveals our true values.\u201d<\/em> <\/p>\n