{"id":737,"date":"2013-04-20T04:44:09","date_gmt":"2013-04-19T19:44:09","guid":{"rendered":"http:\/\/yucchi.jp\/blog\/?p=737"},"modified":"2013-04-24T19:07:36","modified_gmt":"2013-04-24T10:07:36","slug":"%e3%82%82%e3%81%a3%e3%81%a8-lambda%e3%80%80%e3%81%9d%e3%81%ae%ef%bc%93","status":"publish","type":"post","link":"http:\/\/yucchi.jp\/blog\/?p=737","title":{"rendered":"\u3082\u3063\u3068 Lambda\u3000\u305d\u306e\uff13"},"content":{"rendered":"<p>\u4eca\u65e5\u3082 Java8 \u306e\u65b0\u6a5f\u80fd\u306b\u6163\u308c\u308b\u3079\u304f\u3044\u3064\u3082\u306e\u3088\u3046\u306b\u30cd\u30c3\u30c8\u30b5\u30fc\u30d5\u30a3\u30f3\u3067\u5f97\u305f\u60c5\u5831\u3092\u8a66\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u524d\u56de\u30c1\u30e9\u30c3\u3068\u73fe\u308c\u305fSupplier \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068 Constructor References \u3092\u305f\u3081\u3057\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u975e\u5e38\u306b\u7c21\u5358\u3067\u30b7\u30f3\u30d7\u30eb\u306a\u5185\u5bb9\u306a\u306e\u3067\u3059\u3002\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3046\u65b9\u6cd5\u3068\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u4f7f\u3046\u65b9\u6cd5\u3092\u8a18\u8ff0\u3057\u3066\u307e\u3059\u3002<\/p>\n<p>\u305d\u308c\u3092 Supplier \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e get() \u30e1\u30bd\u30c3\u30c9\u3067\u53d6\u5f97\u3057\u3066\u305d\u308c\u305e\u308c\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3055\u305b\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n<p>\u7279\u306b\u96e3\u3057\u3044\u3068\u3053\u308d\u306f\u7121\u3055\u305d\u3046\u3067\u3059\u304c\u3001\u3053\u306e\u4f7f\u3044\u5206\u3051\u306e\u30b7\u30c1\u30e5\u30a8\u30fc\u30b7\u30e7\u30f3\u306f\u5fae\u5999\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n<p>\u3067\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/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\">mylambdaexamples_3\\Airplane.java<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre>\r\npackage mylambdaexamples_3;\r\n\r\nclass Airplane {\r\n\r\n    void pilot() {\r\n        System.out.println(\"\u98db\u884c\u6a5f\u3092\u64cd\u7e26\u3057\u307e\u3059\u3002\");\r\n    }\r\n\r\n}\r\n \r\n\r\n<\/pre>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">mylambdaexamples_3\\JetAirplane.java<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre>\r\npackage mylambdaexamples_3;\r\n\r\nclass JetAirplane extends Airplane {\r\n\r\n    @Override\r\n    void pilot() {\r\n        System.out.println(\"\u30b8\u30a7\u30c3\u30c8\u6a5f\u3092\u64cd\u7e26\u3057\u307e\u3059\u3002\");\r\n    }\r\n\r\n}\r\n\r\n<\/pre>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">mylambdaexamples_3\\MyLambdaExamples_3.java<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre>\r\npackage mylambdaexamples_3;\r\n\r\nimport java.util.function.Supplier;\r\n\r\npublic class MyLambdaExamples_3 {\r\n\r\n    public static void main(String[] args) {\r\n        \/\/ Lambda Expression\r\n        pilot(() -> new Airplane());\r\n        pilot(() -> new JetAirplane());\r\n        \/\/ Constructor References\r\n        pilot(Airplane::new);\r\n        pilot(JetAirplane::new);\r\n    }\r\n\r\n    static void pilot(Supplier<? extends Airplane> supplier) {\r\n        Airplane airPlane = supplier.get();\r\n        airPlane.pilot();\r\n    }\r\n\r\n}\r\n <\/pre>\n<p>\u5b9f\u884c\u7d50\u679c\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u98db\u884c\u6a5f\u3092\u64cd\u7e26\u3057\u307e\u3059\u3002<br \/>\u30b8\u30a7\u30c3\u30c8\u6a5f\u3092\u64cd\u7e26\u3057\u307e\u3059\u3002<br \/>\u98db\u884c\u6a5f\u3092\u64cd\u7e26\u3057\u307e\u3059\u3002<br \/>\u30b8\u30a7\u30c3\u30c8\u6a5f\u3092\u64cd\u7e26\u3057\u307e\u3059\u3002<\/p>\n<p>Java \u306e\u5b66\u7fd2\u306e\u521d\u3081\u306e\u3053\u308d\u306b\u3053\u306e\u3088\u3046\u306a\u611f\u3058\u306e\u3092\u3084\u3063\u305f\u3088\u3046\u306a\u30c7\u30b8\u30e3\u30d6\u3092\u611f\u3058\u307e\u3059\u3002<\/p>\n<p>\u3044\u3061\u304a\u3046 JavaDoc \u3092\u30b5\u30e9\u30c3\u3068\u898b\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\u3044\u3064\u3082\u306e\u3088\u3046\u306b\u512a\u79c0\u306a\u7ffb\u8a33\u652f\u63f4\u30bd\u30d5\u30c8\u306b\u6d3b\u8e8d\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002(&gt;_&lt;\uff61)<\/p>\n<p>&nbsp;<\/p>\n<p><font color=\"#ff0000\" size=\"4\"><strong>Supplier<\/strong><\/font><\/p>\n<p><b><a href=\"about:blank*0\" target=\"_blank\">java.\u200butil.\u200bfunction<\/a><\/b> <\/p>\n<p><tt><a href=\"about:blank*1\" target=\"_blank\">@FunctionalInterface<\/a><\/tt><tt><br \/>public interface <b>Supplier&lt;T&gt;<\/b><\/tt> <\/p>\n<p>A supplier of objects. The result objects are either created during the invocation of <a href=\"about:blank*2\" target=\"_blank\">Supplier.get<\/a><code><\/code> or by some prior action. <\/p>\n<p><b>\u30d1\u30e9\u30e1\u30fc\u30bf:<\/b> <\/p>\n<blockquote><p><code>T<\/code> &#8211; The type of objects returned by <code>get<\/code><\/p><\/blockquote>\n<p><b>\u65e5\u4ed8:<\/b> <\/p>\n<blockquote>\n<p>1.8 <\/p>\n<\/blockquote>\n<p>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u3002 \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c Supplier.get \u306e\u547c\u51fa\u3057\u306e\u9593\u306b\u3001\u3042\u308b\u3044\u306f\u82e5\u5e72\u306e\u4e8b\u524d\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u3042\u308b\u3044\u306f\u4f5c\u308a\u51fa\u3055\u308c\u308b\u3068\u3044\u3046\u7d50\u679c\u3002<\/p>\n<p><strong>\u30d1\u30e9\u30e1\u30fc\u30bf: <\/strong>get \u306b\u3088\u308a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30bf\u30a4\u30d7\u304c\u8fd4\u3055\u308c\u308b\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><font color=\"#ff0000\" size=\"4\"><strong>get()<\/strong><\/font><\/p>\n<p><b><a href=\"about:blank*0\" target=\"_blank\">java.\u200butil.\u200bfunction.\u200bSupplier<\/a><\/b> <\/p>\n<p><tt>public T <b>get<\/b>()<\/tt> <\/p>\n<p>Returns an object. <\/p>\n<p><b>\u623b\u308a\u5024:<\/b> <\/p>\n<blockquote><p>an object<\/p><\/blockquote>\n<p>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u7279\u306b\u96e3\u3057\u3044\u3068\u3053\u308d\u306f\u7121\u3055\u305d\u3046\u3067\u3059\u306d\u3002\u5f37\u3044\u3066\u8a00\u3046\u306a\u3089\u82f1\u8a9e\u306e JavaDoc \u304b\u30fb\u30fb\u30fb<\/p>\n<p>\u305d\u3046\u3044\u3046\u3053\u3068\u3067\u305d\u308d\u305d\u308d\u304a\u7d04\u675f\u306e\u6642\u9593\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u300c\u3082\u3063\u3068 Lambda \u300d\u30b7\u30ea\u30fc\u30ba\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u5f97\u305f\u60c5\u5831\u3092\u5143\u306b\u305d\u308c\u3092\u5c11\u3057\u5909\u66f4\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002 <\/p>\n<p>\u60b2\u3057\u3044\u3053\u3068\u306b\u305d\u306e\u60c5\u5831\u6e90\u306f\u82f1\u8a9e\u306a\u306e\u3067\u8a73\u3057\u3044\u5185\u5bb9\u306f\u308f\u304b\u308a\u307e\u305b\u3093\u3002 <\/p>\n<p>\u3088\u3063\u3066\u79c1\u306e\u63a8\u6e2c\u3067\u89e3\u91c8\u3055\u308c\u305f\u5185\u5bb9\u3068\u306a\u3063\u3066\u307e\u3059\u306e\u3067\u9593\u9055\u3044\u304c\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u3002 <\/p>\n<p>Java8 \u3082\u307e\u3060 build86 \u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u306e\u3067 API \u306e\u5909\u66f4\u306b\u3088\u308a\u8a18\u8ff0\u65b9\u6cd5\u304c\u5909\u308f\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 <\/p>\n<p>\u65e9\u304f\u6b63\u5f0f\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3066\u65e5\u672c\u8a9e\u3067\u3053\u306e\u8d85\u4fbf\u5229\u3067\u7d20\u6575\u306a\u65b0\u6a5f\u80fd\u3092\u52c9\u5f37\u3057\u305f\u3044\u4eca\u65e5\u3053\u306e\u9803\u3067\u3059\u3002 <\/p>\n<p>&nbsp;<\/p>\n<div id=\"scid:0767317B-992E-4b12-91E0-4F059A8CECA8:10fab7c2-5adc-4e5a-b40a-1b2c83bc1220\" class=\"wlWriterEditableSmartContent\" style=\"float: none; padding-bottom: 0px; padding-top: 0px; padding-left: 0px; margin: 0px; display: inline; padding-right: 0px\">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%3D737&title=%E3%82%82%E3%81%A3%E3%81%A8%20Lambda%E3%80%80%E3%81%9D%E3%81%AE%EF%BC%93' 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%3D737&t=%E3%82%82%E3%81%A3%E3%81%A8%20Lambda%E3%80%80%E3%81%9D%E3%81%AE%EF%BC%93' 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=737\" ><\/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=737\" data-text=\"\u3082\u3063\u3068 Lambda\u3000\u305d\u306e\uff13\" data-lang=\"ja\">Tweet<\/a><\/div>\n    <\/div>\n<br class='wp_social_bookmarking_light_clear' \/>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u65e5\u3082 Java8 \u306e\u65b0\u6a5f\u80fd\u306b\u6163\u308c\u308b\u3079\u304f\u3044\u3064\u3082\u306e\u3088\u3046\u306b\u30cd\u30c3\u30c8\u30b5\u30fc\u30d5\u30a3\u30f3\u3067\u5f97\u305f\u60c5\u5831\u3092\u8a66\u3057\u3066\u307f\u307e\u3059\u3002 \u4eca\u56de\u306f\u524d\u56de\u30c1\u30e9\u30c3\u3068\u73fe\u308c\u305fSupplier \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068 Constructor References \u3092\u305f\u3081\u3057\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002 \u975e\u5e38\u306b\u7c21\u5358\u3067\u30b7\u30f3\u30d7\u30eb\u306a\u5185\u5bb9\u306a\u306e\u3067\u3059\u3002\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3046\u65b9\u6cd5\u3068\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u4f7f\u3046\u65b9\u6cd5\u3092\u8a18\u8ff0\u3057\u3066\u307e\u3059\u3002 \u305d\u308c\u3092 Supplier \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e get() \u30e1\u30bd\u30c3\u30c9\u3067\u53d6\u5f97\u3057\u3066\u305d\u308c\u305e\u308c\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3055\u305b\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002 \u7279\u306b\u96e3\u3057\u3044\u3068\u3053\u308d\u306f\u7121\u3055\u305d\u3046\u3067\u3059\u304c\u3001\u3053\u306e\u4f7f\u3044\u5206\u3051\u306e\u30b7\u30c1\u30e5\u30a8\u30fc\u30b7\u30e7\u30f3\u306f\u5fae\u5999\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002 \u3067\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30b3\u30fc\u30c9\u3067\u3059\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-737","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\/737","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=737"}],"version-history":[{"count":2,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/737\/revisions"}],"predecessor-version":[{"id":774,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/737\/revisions\/774"}],"wp:attachment":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=737"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}