{"id":202795,"date":"2025-05-22T09:46:58","date_gmt":"2025-05-22T01:46:58","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202795\/"},"modified":"2025-05-22T09:46:58","modified_gmt":"2025-05-22T01:46:58","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e4%bd%bf%e7%94%a8lambda%e8%a1%a8%e8%be%be%e5%bc%8f%e5%88%9b%e5%bb%bajava%e5%87%bd%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202795\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u4e3a\u4ec0\u4e48\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\uff1f<\/h1>\n<p>\u6587\u7ae0\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300a\u4e3a\u4ec0\u4e48\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\uff1f\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p><\/p>\n<p>\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\u662f\u56e0\u4e3a\u5b83\u4eec\u7b80\u6d01\u3001\u53ef\u8bfb\u3001\u533f\u540d\uff0c\u5e76\u652f\u6301\u51fd\u6570\u5f0f\u7f16\u7a0b\u3002\u8fd9\u53ef\u4ee5\u7b80\u5316\u51fd\u6570\u521b\u5efa\u3001\u63d0\u9ad8\u53ef\u8bfb\u6027\u3001\u5141\u8bb8\u4e00\u6b21\u6027\u4f7f\u7528\u533f\u540d\u51fd\u6570\uff0c\u5e76\u4fc3\u8fdb\u53ef\u7ec4\u5408\u3001\u53ef\u91cd\u7528\u7684\u4ee3\u7801\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729942777671cd4f9c1c55.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4e3a\u4ec0\u4e48\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\uff1f<\/strong><\/p>\n<p><strong>\u524d\u8a00<\/strong><\/p>\n<p>Lambda\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u7b80\u5316\u7684\u533f\u540d\u51fd\u6570\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u7528\u8f83\u5c11\u7684\u6837\u677f\u4ee3\u7801\u6765\u521b\u5efa\u51fd\u6570\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3001\u53ef\u8bfb\u6027\u66f4\u9ad8\u3002<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<p>\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u7684\u4f18\u70b9\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7b80\u6d01\u6027\uff1a<\/strong>lambda\u8868\u8fbe\u5f0f znacznie\u7b80\u5316\u4e86\u51fd\u6570\u7684\u521b\u5efa\u8fc7\u7a0b\uff0c\u4ece\u800c\u51cf\u5c11\u4e86\u4ee3\u7801\u91cf\u3002<\/li>\n<li><strong>\u53ef\u8bfb\u6027\uff1a<\/strong>lambda\u8868\u8fbe\u5f0f\u6e05\u6670\u6613\u8bfb\uff0c\u53ef\u4ee5\u8f7b\u677e\u7406\u89e3\u5176\u610f\u56fe\u3002<\/li>\n<li><strong>\u533f\u540d\u6027\uff1a<\/strong>lambda\u8868\u8fbe\u5f0f\u662f\u533f\u540d\u7684\uff0c\u53ef\u4ee5\u5728\u6ca1\u6709\u663e\u5f0f\u540d\u79f0\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u3002\u8fd9\u5bf9\u4e8e\u4e00\u6b21\u6027\u51fd\u6570\u975e\u5e38\u65b9\u4fbf\u3002<\/li>\n<li><strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\uff1a<\/strong>lambda\u8868\u8fbe\u5f0f\u652f\u6301\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\uff0c\u8fd9\u5141\u8bb8\u6211\u4eec\u7f16\u5199\u53ef\u7ec4\u5408\u3001\u53ef\u91cd\u7528\u7684\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<p>lambda\u8868\u8fbe\u5f0f\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>(\u53c2\u6570\u5217\u8868) -&gt; {\n  \/\/ \u51fd\u6570\u4f53\n}<\/pre>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0blambda\u8868\u8fbe\u5f0f\u521b\u5efa\u4e00\u4e2a\u8fd4\u56de\u8f93\u5165\u6570\u5b57\u5e73\u65b9\u503c\u7684\u51fd\u6570\uff1a<\/p>\n<pre>(x) -&gt; x * x;<\/pre>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p><strong>\u6392\u5e8f\u5217\u8868\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b\u4ee3\u7801\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u5bf9\u5b57\u7b26\u4e32\u5217\u8868\u6309\u5b57\u6bcd\u987a\u5e8f\u8fdb\u884c\u6392\u5e8f\uff1a<\/p>\n<pre>List&lt;String&gt; names = List.of(\"Alice\", \"Bob\", \"Charlie\");\nnames.sort((a, b) -&gt; a.compareTo(b));<\/pre>\n<p><strong>\u7b5b\u9009\u96c6\u5408\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b\u4ee3\u7801\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u4ece\u96c6\u5408\u4e2d\u7b5b\u9009\u51fa\u6240\u6709\u5927\u4e8e10\u7684\u6570\u5b57\uff1a<\/p>\n<pre>List&lt;Integer&gt; numbers = List.of(1, 5, 11, 15, 20);\nList&lt;Integer&gt; filteredNumbers = numbers.stream()\n    .filter(n -&gt; n &gt; 10)\n    .toList();<\/pre>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>lambda\u8868\u8fbe\u5f0f\u4e3aJava\u63d0\u4f9b\u4e86\u521b\u5efa\u51fd\u6570\u7684\u7b80\u6d01\u4e14\u5f3a\u5927\u7684\u65b9\u5f0f\u3002\u5b83\u4eec\u4f7f\u4ee3\u7801\u66f4\u7b80\u6d01\u3001\u66f4\u53ef\u8bfb\uff0c\u5e76\u652f\u6301\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u3002\u901a\u8fc7\u4e86\u89e3lambda\u8868\u8fbe\u5f0f\u7684\u4f18\u52bf\u548c\u8bed\u6cd5\uff0c\u60a8\u53ef\u4ee5\u5145\u5206\u5229\u7528\u5b83\u4eec\u6765\u63d0\u5347\u60a8\u7684Java\u4ee3\u7801\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>\u4e3a\u4ec0\u4e48\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u521b\u5efa&#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-202795","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202795","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=202795"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202795\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}