{"id":202919,"date":"2025-05-22T12:13:19","date_gmt":"2025-05-22T04:13:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202919\/"},"modified":"2025-05-22T12:13:19","modified_gmt":"2025-05-22T04:13:19","slug":"java%e4%b8%adlambda%e8%a1%a8%e8%be%be%e5%bc%8f%e7%9a%84%e9%99%90%e5%88%b6%e5%92%8c%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202919\/","title":{"rendered":"Java\u4e2dLambda\u8868\u8fbe\u5f0f\u7684\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u4e2dLambda\u8868\u8fbe\u5f0f\u7684\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879\u6709\u54ea\u4e9b\uff1f<\/h1>\n<p>\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava\u4e2dLambda\u8868\u8fbe\u5f0f\u7684\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879\u6709\u54ea\u4e9b\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9&#8230;\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n<p>Lambda \u8868\u8fbe\u5f0f\u7684\u9650\u5236\u5305\u62ec\uff1a\u6709\u6548\u4f5c\u7528\u57df\u3001\u6cdb\u578b\u53d7\u9650\u3001\u8fd4\u56de\u503c\u7c7b\u578b\u786e\u5b9a\u3002\u6ce8\u610f\u4e8b\u9879\u5305\u62ec\uff1a\u7c7b\u578b\u63a8\u65ad\u3001\u5e76\u884c\u6267\u884c\u3001\u8fd0\u884c\u65f6\u5f00\u9500\u3002\u5b9e\u6218\u6848\u4f8b\u4e2d\uff0c\u5bf9\u5217\u8868\u5143\u7d20\u6c42\u548c\u7684 Lambda \u8868\u8fbe\u5f0f\u9075\u5b88\u4e86\u8fd9\u4e9b\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879\uff0c\u4e0d\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1729998109671dad1d4ce0e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u4e2d Lambda \u8868\u8fbe\u5f0f\u7684\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<p>Lambda \u8868\u8fbe\u5f0f\u662f Java 8 \u4e2d\u5f15\u5165\u7684\u4e00\u9879\u5f3a\u5927\u529f\u80fd\uff0c\u53ef\u7528\u4e8e\u7b80\u5316\u4ee3\u7801\u5e76\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002\u4f46\u662f\uff0c\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u65f6\u9700\u8981\u6ce8\u610f\u4e00\u4e9b\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<p><strong>\u9650\u5236\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u6709\u6548\u4f5c\u7528\u57df\uff1a<\/strong>Lambda \u8868\u8fbe\u5f0f\u53ea\u80fd\u8bbf\u95ee\u5176\u5c01\u95ed\u4f5c\u7528\u57df\u5185\u7684\u5c40\u90e8\u53d8\u91cf\u3002\u5982\u679c\u5c40\u90e8\u53d8\u91cf\u5728 Lambda \u8868\u8fbe\u5f0f\u5916\u90e8\u53d1\u751f\u53d8\u5316\uff0c\u5219\u53ef\u80fd\u5bfc\u81f4\u4e0d\u53ef\u9884\u6d4b\u7684\u884c\u4e3a\u3002<\/li>\n<li><strong>\u6cdb\u578b\u53d7\u9650\uff1a<\/strong>Lambda \u8868\u8fbe\u5f0f\u65e0\u6cd5\u4f7f\u7528\u6cdb\u578b\u7c7b\u578b\u53c2\u6570\u3002\u8fd9\u662f\u56e0\u4e3a\u6cdb\u578b\u7c7b\u578b\u64e6\u9664\u53ea\u9002\u7528\u4e8e\u7c7b\u548c\u65b9\u6cd5\uff0c\u800c\u4e0d\u9002\u7528\u4e8e Lambda \u8868\u8fbe\u5f0f\u3002<\/li>\n<li><strong>\u8fd4\u56de\u503c\u7c7b\u578b\uff1a<\/strong>Lambda \u8868\u8fbe\u5f0f\u7684\u8fd4\u56de\u503c\u7c7b\u578b\u5728\u7f16\u8bd1\u65f6\u662f\u786e\u5b9a\u7684\u3002\u8fd9\u610f\u5473\u7740\u65e0\u6cd5\u5728\u8fd0\u884c\u65f6\u66f4\u6539 Lambda \u8868\u8fbe\u5f0f\u7684\u8fd4\u56de\u503c\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u7c7b\u578b\u63a8\u65ad\uff1a<\/strong>\u7f16\u8bd1\u5668\u53ef\u4ee5\u4ece\u4e0a\u4e0b\u6587\u4e2d\u63a8\u65ad Lambda \u8868\u8fbe\u5f0f\u7684\u7c7b\u578b\u3002\u4f46\u662f\uff0c\u5f53 Lambda \u8868\u8fbe\u5f0f\u5177\u6709\u590d\u6742\u7c7b\u578b\u65f6\uff0c\u660e\u786e\u6307\u5b9a\u7c7b\u578b\u6709\u52a9\u4e8e\u63d0\u9ad8\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<li><strong>\u5e76\u884c\u6267\u884c\uff1a<\/strong>\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0cLambda \u8868\u8fbe\u5f0f\u53ef\u80fd\u4f1a\u5e76\u884c\u6267\u884c\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5e76\u53d1\u95ee\u9898\uff0c\u7279\u522b\u662f\u5f53 Lambda \u8868\u8fbe\u5f0f\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u65f6\u3002<\/li>\n<li><strong>\u8fd0\u884c\u65f6\u5f00\u9500\uff1a<\/strong>\u521b\u5efa\u548c\u6267\u884c Lambda \u8868\u8fbe\u5f0f\u4f1a\u4ea7\u751f\u4e00\u4e9b\u8fd0\u884c\u65f6\u5f00\u9500\u3002\u5bf9\u4e8e\u975e\u5e38\u7b80\u5355\u7684\u64cd\u4f5c\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bf9\u6027\u80fd\u4ea7\u751f\u8d1f\u9762\u5f71\u54cd\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u5bf9\u5217\u8868\u4e2d\u6240\u6709\u5143\u7d20\u6c42\u548c\u7684 Lambda \u8868\u8fbe\u5f0f\uff1a<\/p>\n<pre>List&lt;Integer&gt; numbers = List.of(1, 2, 3, 4, 5);\nint sum = numbers.stream()\n                .mapToInt(n -&gt; n)\n                .sum();\nSystem.out.println(\"Sum: \" + sum);<\/pre>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cLambda \u8868\u8fbe\u5f0f <code>n -&gt; n<\/code> \u53ea\u662f\u5c06\u8f93\u5165\u5143\u7d20\u8f6c\u6362\u4e3a\u6574\u6570\u5e76\u8fd4\u56de\u3002\u5b83\u4e0d\u4f1a\u4fee\u6539\u5c40\u90e8\u53d8\u91cf\u6216\u8bbf\u95ee\u5171\u4eab\u6570\u636e\uff0c\u56e0\u6b64\u4e0d\u4f1a\u6709\u4efb\u4f55\u9650\u5236\u6216\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u4e2dLambda\u8868\u8fbe\u5f0f\u7684\u9650&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202919","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202919","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202919"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202919\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}