{"id":202603,"date":"2025-05-22T10:52:40","date_gmt":"2025-05-22T02:52:40","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202603\/"},"modified":"2025-05-22T10:52:40","modified_gmt":"2025-05-22T02:52:40","slug":"lambda%e8%a1%a8%e8%be%be%e5%bc%8f%e5%9c%a8java%e4%b8%ad%e7%9a%84%e6%80%a7%e8%83%bd%e5%92%8c%e6%95%88%e7%8e%87%e6%96%b9%e9%9d%a2%e6%9c%89%e4%bb%80%e4%b9%88%e5%bd%b1%e5%93%8d%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202603\/","title":{"rendered":"Lambda\u8868\u8fbe\u5f0f\u5728Java\u4e2d\u7684\u6027\u80fd\u548c\u6548\u7387\u65b9\u9762\u6709\u4ec0\u4e48\u5f71\u54cd\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Lambda\u8868\u8fbe\u5f0f\u5728Java\u4e2d\u7684\u6027\u80fd\u548c\u6548\u7387\u65b9\u9762\u6709\u4ec0\u4e48\u5f71\u54cd\uff1f<\/h1>\n<p>\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aLambda\u8868\u8fbe\u5f0f\u5728Java\u4e2d\u7684\u6027\u80fd\u548c\u6548\u7387\u65b9\u9762\u6709\u4ec0\u4e48\u5f71\u54cd\uff1f\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p>Lambda \u8868\u8fbe\u5f0f\u663e\u8457\u63d0\u5347\u4e86 Java \u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u6548\u7387\uff0c\u5177\u4f53\u8868\u73b0\u4e3a\uff1a\u51cf\u5c11\u5bf9\u8c61\u5206\u914d\uff0c\u6539\u5584\u5783\u573e\u56de\u6536\u6027\u80fd\uff1b\u5185\u8054\u4ee3\u7801\uff0c\u964d\u4f4e\u65b9\u6cd5\u8c03\u7528\u5f00\u9500\uff1b\u65b9\u6cd5\u5f15\u7528\uff0c\u8fdb\u4e00\u6b65\u4f18\u5316\u6267\u884c\uff1b\u7ebf\u7a0b\u5b89\u5168\u6027\uff0c\u7b80\u5316\u5e76\u53d1\u7f16\u7a0b\uff1b\u6a21\u5757\u5316\u4ee3\u7801\uff0c\u63d0\u5347\u4ee3\u7801\u53ef\u91cd\u7528\u6027\uff1b\u7b80\u6d01\u8bed\u6cd5\uff0c\u964d\u4f4e\u4ee3\u7801\u590d\u6742\u5ea6\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729922570671c860a684be.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Lambda \u8868\u8fbe\u5f0f\u5bf9 Java \u6027\u80fd\u548c\u6548\u7387\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u901a\u8fc7\u5f15\u5165 lambda \u8868\u8fbe\u5f0f\uff0cJava 8 \u663e\u8457\u63d0\u9ad8\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u6548\u7387\u3002<\/p>\n<p><strong>\u6027\u80fd\u63d0\u5347<\/strong><\/p>\n<ul>\n<li><strong>\u51cf\u5c11\u5bf9\u8c61\u5206\u914d\uff1a<\/strong>Lambda \u8868\u8fbe\u5f0f\u4f7f\u7528\u95ed\u5305\uff0c\u6d88\u9664\u4e86\u521b\u5efa\u65b0\u533f\u540d\u7c7b\u7684\u5927\u91cf\u5bf9\u8c61\u5206\u914d\uff0c\u4ece\u800c\u6539\u5584\u4e86\u5783\u573e\u56de\u6536\u6027\u80fd\u3002<\/li>\n<li><strong>\u5185\u8054\u4ee3\u7801\uff1a<\/strong>\u7f16\u8bd1\u5668\u53ef\u4ee5\u5c06 lambda \u8868\u8fbe\u5f0f\u5185\u8054\u5230\u8c03\u7528\u65b9\u65b9\u6cd5\u4e2d\uff0c\u51cf\u5c11\u4e86\u65b9\u6cd5\u8c03\u7528\u5f00\u9500\u3002<\/li>\n<li><strong>\u65b9\u6cd5\u5f15\u7528\uff1a<\/strong>\u65b9\u6cd5\u5f15\u7528\u5141\u8bb8 lambda \u8868\u8fbe\u5f0f\u4e0e\u73b0\u6709\u65b9\u6cd5\u5173\u8054\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u4f18\u5316\u4e86\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u6548\u7387\u63d0\u5347<\/strong><\/p>\n<ul>\n<li><strong>\u5e76\u53d1\u6027\uff1a<\/strong>lambda \u8868\u8fbe\u5f0f\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u4f7f\u5e76\u53d1\u7f16\u7a0b\u66f4\u52a0\u5bb9\u6613\u548c\u6709\u6548\u3002<\/li>\n<li><strong>\u6a21\u5757\u5316\u4ee3\u7801\uff1a<\/strong>lambda \u8868\u8fbe\u5f0f\u7b80\u5316\u4e86\u4ee3\u7801\u7ec4\u7ec7\uff0c\u5141\u8bb8\u5c06\u903b\u8f91\u5206\u79bb\u5230\u53ef\u91cd\u7528\u5355\u5143\u4e2d\u3002<\/li>\n<li><strong>\u7b80\u6d01\u6027\uff1a<\/strong>lambda \u8868\u8fbe\u5f0f\u63d0\u4f9b\u4e86\u7b80\u6d01\u7684\u8bed\u6cd5\uff0c\u4ece\u800c\u51cf\u5c11\u4e86\u4ee3\u7801\u590d\u6742\u6027\u5e76\u63d0\u9ad8\u4e86\u53ef\u8bfb\u6027\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u4f18\u5316\u96c6\u5408\u5904\u7406\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>\/\/ \u4f20\u7edf\u65b9\u5f0f\nList&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\n for (int i : numbers) {\n  if (i % 2 == 0) {\n   \/\/ \u64cd\u4f5c\u5076\u6570\n  }\n }\n\n\/\/ \u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\nnumbers.stream()\n .filter(i -&gt; i % 2 == 0)\n .forEach(even -&gt; {\n  \/\/ \u64cd\u4f5c\u5076\u6570\n });<\/pre>\n<p>\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\uff0c<code>filter()<\/code> \u548c <code>forEach()<\/code> \u64cd\u4f5c\u88ab\u5206\u79bb\u5230\u4e0d\u540c\u7684 lambda \u8868\u8fbe\u5f0f\u4e2d\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u6a21\u5757\u5316\u548c\u6548\u7387\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>lambda \u8868\u8fbe\u5f0f\u901a\u8fc7\u51cf\u5c11\u5bf9\u8c61\u5206\u914d\u3001\u5185\u8054\u4ee3\u7801\u548c\u63d0\u4f9b\u7ebf\u7a0b\u5b89\u5168\u6027\uff0c\u663e\u8457\u63d0\u9ad8\u4e86 Java \u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u5b83\u4eec\u7b80\u5316\u4e86\u4ee3\u7801\u7ec4\u7ec7\u548c\u53ef\u8bfb\u6027\uff0c\u4f7f\u5e76\u53d1\u7f16\u7a0b\u66f4\u52a0\u5bb9\u6613\u3002<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lambda\u8868\u8fbe\u5f0f\u5728Java\u4e2d\u7684&#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-202603","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202603","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=202603"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202603\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}