{"id":102,"date":"2012-05-25T05:56:37","date_gmt":"2012-05-24T20:56:37","guid":{"rendered":"http:\/\/yucchi.jp\/blog\/?p=102"},"modified":"2013-04-24T22:28:57","modified_gmt":"2013-04-24T13:28:57","slug":"%e3%81%af%e3%81%98%e3%82%81%e3%81%a6%e3%81%ae-lambda-vol-3","status":"publish","type":"post","link":"http:\/\/yucchi.jp\/blog\/?p=102","title":{"rendered":"\u306f\u3058\u3081\u3066\u306e Lambda vol.3"},"content":{"rendered":"<p><font size=\"3\">JDK 8 \u3067\u63a1\u7528\u3055\u308c\u308b\u4e88\u5b9a\u306e Lambda \u306b\u3064\u3044\u3066\u3044\u308d\u3044\u308d\u8abf\u3079\u3066\u3044\u308b\u3093\u3067\u3059\u304c<\/font><\/p>\n<p><font size=\"3\">\u4eca\u56de\u306f Virtual Extension Methods \u307e\u305f\u306f Defender Methods \u3068\u8a00\u308f\u308c\u3066\u3044\u308b\uff1f<\/font><\/p>\n<p><font size=\"3\">\u65b0\u305f\u306a\uff08\u90fd\u5408\u306e\u826f\u3044\uff1f\uff09\u3082\u306e\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002<\/font><\/p>\n<p><font size=\"3\">\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408 JDK 7 \u307e\u3067\u306f\u5168\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u3067\u3057\u305f\u3088\u306d\u3002<\/font><\/p>\n<p><font color=\"#0000ff\" size=\"5\"><strong>JDK 8 \u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\u3092\u5b9a\u7fa9\u3067\u304d\u308b\u3089\u3057\u3044\u3093\u3067\u3059\u3002<\/strong><\/font><\/p>\n<p><font size=\"3\">\u5177\u4f53\u7684\u306b\u306f\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002<\/font><\/p>\n<style type=\"text\/css\">\n<!--\ntable {color: #000000; background-color: #e9e8e2; font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09}\n-->\n<\/style>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">jp\\yucchi\\virtual_extension_method_1\\Virtual_Extension_Method_1.java<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre>\r\npackage jp.yucchi.virtual_extension_method_1;\r\n\r\ninterface Hello {\r\n\r\n    void sayHello();\r\n\r\n    void sayHelloDefaulter() default {\r\n        System.out.println(\"Default from interface : Hello World!\"); \r\n    }\r\n\r\n}\r\n\r\npublic class Virtual_Extension_Method_1 {\r\n\r\n    public static void main(String[] args) {\r\n        HelloImplementer helloImpl = new HelloImplementer();\r\n        helloImpl.sayHello();\r\n        helloImpl.sayHelloDefaulter();\r\n    }\r\n}\r\n\r\nclass HelloImplementer implements Hello {\r\n\r\n    @Override\r\n    public void sayHello() {\r\n        System.out.println(\"Hello World!\");\r\n    }\r\n    \r\n}\r\n\r\n<\/pre>\n<p><font size=\"3\">\u4eca\u307e\u3067\u3060\u3063\u305f\u3089 sayHelloDefalter() \u30e1\u30bd\u30c3\u30c9\u3092 HelloImplementer \u30af\u30e9\u30b9\u304c\u5b9f\u88c5\u3057\u3066\u3044\u306a\u3044\u306e\u3067<\/font><\/p>\n<p><font size=\"3\">\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u3063\u305f\u306f\u305a\u3067\u3059\u3088\u306d\u3002<\/font><\/p>\n<p><font color=\"#ff0000\" size=\"4\"><strong>JDK 8 \u3067\u306f\u30e1\u30bd\u30c3\u30c9\u306b defalt \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4ed8\u3051\u308b\u3053\u3068\u306b\u3088\u3063\u3066<\/strong><\/font><\/p>\n<p><font color=\"#ff0000\" size=\"5\"><strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\u3055\u308c\u307e\u3059\uff01<\/strong><\/font><\/p>\n<p><font size=\"3\">\u5b9f\u969b\u306b\u52d5\u304b\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/font><\/p>\n<p><a href=\"http:\/\/yucchi.jp\/blog\/wp-content\/uploads\/2012\/05\/11.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-right-width: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top-width: 0px; border-bottom-width: 0px; border-left-width: 0px; padding-top: 0px\" title=\"Virtual Extension Methods 1\" border=\"0\" alt=\"Virtual Extension Methods 1\" src=\"http:\/\/yucchi.jp\/blog\/wp-content\/uploads\/2012\/05\/1_thumb1.png\" width=\"642\" height=\"772\"><\/a><\/p>\n<p><font size=\"3\">\u3061\u3083\u3093\u3068\u52d5\u3044\u3066\u307e\u3059\u3002<\/font><\/p>\n<p><font size=\"3\">\u3082\u3061\u308d\u3093\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u3082\uff01<\/font><\/p>\n<p><font size=\"3\">\u3053\u3053\u3067\u3061\u3087\u3063\u3068\u7591\u554f\u304c\u30fb\u30fb\u30fb<\/font><\/p>\n<p><font color=\"#9b00d3\" size=\"4\"><strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u3063\u3066\u30aa\u30fc\u30e9\u30fc\u30e9\u30a4\u30c9\u3067\u304d\u308b\u306e\uff1f<\/strong><\/font><\/p>\n<p><font size=\"3\">\u30b3\u30fc\u30c9\u3092\u6b21\u306e\u3088\u3046\u306b\u5909\u66f4\u3057\u307e\u3057\u305f\u3002<\/font><\/p>\n<p><font size=\"3\"><\/font>&nbsp;<\/p>\n<p><font size=\"3\"><\/font><\/p>\n<style type=\"text\/css\">\n<!--\npre {color: #000000; background-color: #ffffff; font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09}\ntable {color: #000000; background-color: #e9e8e2; font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09}\n.st1 {color: #009900; font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09; font-style: italic}\n.keyword-directive {color: #0000e6}\n.character {color: #ce7b00}\n.st0 {font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09; font-weight: bold}\n.st2 {font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09; font-weight: bold; font-style: italic}\n-->\n<\/style>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">jp\\yucchi\\virtual_extension_method_1\\Virtual_Extension_Method_1.java<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre><font size=\"4\"><span class=\"keyword-directive\">package<\/span> jp.yucchi.virtual_extension_method_1;\r\n\r\n<span class=\"keyword-directive\">interface<\/span> <span class=\"ST0\">Hello<\/span> {\r\n\r\n    <span class=\"keyword-directive\">void<\/span> <span class=\"ST0\">sayHello<\/span>();\r\n\r\n    <span class=\"keyword-directive\">void<\/span> <span class=\"ST0\">sayHelloDefaulter<\/span>() <span class=\"keyword-directive\">default<\/span> {\r\n        System.<span class=\"ST1\">out<\/span>.println(<span class=\"character\">\"<\/span><span class=\"character\">Default from interface : Hello World!<\/span><span class=\"character\">\"<\/span>); \r\n    }\r\n\r\n}\r\n\r\n<span class=\"keyword-directive\">public<\/span> <span class=\"keyword-directive\">class<\/span> <span class=\"ST0\">Virtual_Extension_Method_1<\/span> {\r\n\r\n    <span class=\"keyword-directive\">public<\/span> <span class=\"keyword-directive\">static<\/span> <span class=\"keyword-directive\">void<\/span> <span class=\"ST2\">main<\/span>(String[] args) {\r\n        HelloImplementer helloImpl = <span class=\"keyword-directive\">new<\/span> HelloImplementer();\r\n        helloImpl.sayHello();\r\n        helloImpl.sayHelloDefaulter();\r\n    }\r\n}\r\n\r\n<span class=\"keyword-directive\">class<\/span> <span class=\"ST0\">HelloImplementer<\/span> <span class=\"keyword-directive\">implements<\/span> Hello {\r\n\r\n    @Override\r\n    <span class=\"keyword-directive\">public<\/span> <span class=\"keyword-directive\">void<\/span> <span class=\"ST0\">sayHello<\/span>() {\r\n        System.<span class=\"ST1\">out<\/span>.println(<span class=\"character\">\"<\/span><span class=\"character\">Hello World!<\/span><span class=\"character\">\"<\/span>);\r\n    }\r\n    @Override\r\n    <span class=\"keyword-directive\">public<\/span> <span class=\"keyword-directive\">void<\/span> <span class=\"ST0\">sayHelloDefaulter<\/span>(){\r\n        System.<span class=\"ST1\">out<\/span>.println(<span class=\"character\">\"<\/span><span class=\"character\">Defautler overridden from class : Hello World!<\/span><span class=\"character\">\"<\/span>);\r\n    }\r\n}<\/font>\r\n<\/pre>\n<p><font size=\"3\"><\/font>&nbsp;<\/p>\n<p><font size=\"3\">\u305d\u308c\u3067\u306f\u5b9f\u884c\u3055\u305b\u3066\u307f\u307e\u3059\u3002<\/font><\/p>\n<p><a href=\"http:\/\/yucchi.jp\/blog\/wp-content\/uploads\/2012\/05\/21.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" style=\"background-image: none; border-right-width: 0px; padding-left: 0px; padding-right: 0px; display: inline; border-top-width: 0px; border-bottom-width: 0px; border-left-width: 0px; padding-top: 0px\" title=\"Virtual Extension Methods 2\" border=\"0\" alt=\"Virtual Extension Methods 2\" src=\"http:\/\/yucchi.jp\/blog\/wp-content\/uploads\/2012\/05\/2_thumb1.png\" width=\"706\" height=\"772\"><\/a><\/p>\n<p><font color=\"#00ff00\" size=\"4\"><strong>\u3061\u3083\u3093\u3068\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3055\u308c\u3066\u307e\u3059\u306d\uff01\uff08\uff3e\uff3e\uff09<\/strong><\/font><\/p>\n<p><font size=\"3\">\u306a\u304b\u306a\u304b\u9762\u767d\u3044\u3067\u3059\u306d\u3002<\/font><\/p>\n<p><font size=\"3\">\u3053\u306e Virtual Extension Methods \u306f Lambda \u3092\u5b9f\u88c5\u3059\u308b\u306e\u306b\u304a\u307e\u3051\u3067\u306f\u306a\u304f<\/font><\/p>\n<p><font size=\"3\">\u5fc5\u8981\u4e0d\u53ef\u6b20\u306a\u5b9f\u88c5\u3089\u3057\u3044\u3067\u3059\u3002<\/font><\/p>\n<p><font size=\"3\">\u79c1\u306f Lambda \u306e\u3053\u3068\u306f\u307e\u3060\u307b\u3068\u3093\u3069\u89e3\u308a\u307e\u305b\u3093\u304c JDK 8 \u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u308b\u306e\u304c\u5c11\u3057\u697d\u3057\u307f\u306b\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002(*^_^*)<\/font><\/p>\n<div style=\"padding-bottom: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; float: none; padding-top: 0px\" id=\"scid:0767317B-992E-4b12-91E0-4F059A8CECA8:f2f682d8-a6cd-437d-b381-11a8b9e61550\" class=\"wlWriterEditableSmartContent\">Hatena \u30bf\u30b0: <a href=\"http:\/\/b.hatena.ne.jp\/t\/Java\" rel=\"tag\">Java<\/a><\/div>\n<div class='wp_social_bookmarking_light'>\n            <div class=\"wsbl_hatena\"><a href='\/\/b.hatena.ne.jp\/add?mode=confirm&url=http%3A%2F%2Fyucchi.jp%2Fblog%2F%3Fp%3D102&title=%E3%81%AF%E3%81%98%E3%82%81%E3%81%A6%E3%81%AE%20Lambda%20vol.3' title='\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0' rel=nofollow class='wp_social_bookmarking_light_a' target=_blank><img src='http:\/\/yucchi.jp\/blog\/wp-content\/plugins\/wp-social-bookmarking-light\/public\/images\/hatena.gif' alt='\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0' title='\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0' width='16' height='12' class='wp_social_bookmarking_light_img' \/><\/a><\/div>\n            <div class=\"wsbl_facebook\"><a href='http:\/\/www.facebook.com\/share.php?u=http%3A%2F%2Fyucchi.jp%2Fblog%2F%3Fp%3D102&t=%E3%81%AF%E3%81%98%E3%82%81%E3%81%A6%E3%81%AE%20Lambda%20vol.3' title='Facebook \u306b\u30b7\u30a7\u30a2' rel=nofollow class='wp_social_bookmarking_light_a' target=_blank><img src='http:\/\/yucchi.jp\/blog\/wp-content\/plugins\/wp-social-bookmarking-light\/public\/images\/facebook.png' alt='Facebook \u306b\u30b7\u30a7\u30a2' title='Facebook \u306b\u30b7\u30a7\u30a2' width='16' height='16' class='wp_social_bookmarking_light_img' \/><\/a><\/div>\n            <div class=\"wsbl_google_plus_one\"><g:plusone size=\"medium\" annotation=\"none\" href=\"http:\/\/yucchi.jp\/blog\/?p=102\" ><\/g:plusone><\/div>\n            <div class=\"wsbl_twitter\"><a href=\"https:\/\/twitter.com\/share\" class=\"twitter-share-button\" data-url=\"http:\/\/yucchi.jp\/blog\/?p=102\" data-text=\"\u306f\u3058\u3081\u3066\u306e Lambda vol.3\" data-lang=\"ja\">Tweet<\/a><\/div>\n    <\/div>\n<br class='wp_social_bookmarking_light_clear' \/>\n","protected":false},"excerpt":{"rendered":"<p>JDK 8 \u3067\u63a1\u7528\u3055\u308c\u308b\u4e88\u5b9a\u306e Lambda \u306b\u3064\u3044\u3066\u3044\u308d\u3044\u308d\u8abf\u3079\u3066\u3044\u308b\u3093\u3067\u3059\u304c \u4eca\u56de\u306f Virtual Extension Methods \u307e\u305f\u306f Defender Methods \u3068\u8a00\u308f\u308c\u3066\u3044\u308b\uff1f \u65b0\u305f\u306a\uff08\u90fd\u5408\u306e\u826f\u3044\uff1f\uff09\u3082\u306e\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002 \u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408 JDK 7 \u307e\u3067\u306f\u5168\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u3067\u3057\u305f\u3088\u306d\u3002 JDK 8 \u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\u3092\u5b9a\u7fa9\u3067\u304d\u308b\u3089\u3057\u3044\u3093\u3067\u3059\u3002 \u5177\u4f53\u7684\u306b\u306f\u6b21\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002 jp\\yucchi\\virtual_extension_method_1\\Virtual_Extension_Method_1.java package j\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-102","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\/102","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=102"}],"version-history":[{"count":3,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/102\/revisions"}],"predecessor-version":[{"id":847,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/102\/revisions\/847"}],"wp:attachment":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=102"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}