{"id":202892,"date":"2025-05-22T10:09:06","date_gmt":"2025-05-22T02:09:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202892\/"},"modified":"2025-05-22T10:09:06","modified_gmt":"2025-05-22T02:09:06","slug":"%e5%88%a9%e7%94%a8%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e8%a7%a3%e5%86%b3java%e4%bb%a3%e7%a0%81%e5%a4%8d%e6%9d%82%e6%80%a7%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202892\/","title":{"rendered":"\u5229\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u89e3\u51b3Java\u4ee3\u7801\u590d\u6742\u6027\u95ee\u9898"},"content":{"rendered":"

<\/b> <\/p>\n

\u5229\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u89e3\u51b3Java\u4ee3\u7801\u590d\u6742\u6027\u95ee\u9898<\/h1>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300a\u5229\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u89e3\u51b3Java\u4ee3\u7801\u590d\u6742\u6027\u95ee\u9898\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\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

\u51fd\u6570\u5f0f\u7f16\u7a0b\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u964d\u4f4e Java \u4ee3\u7801\u590d\u6742\u6027\uff1a\u91c7\u7528\u7eaf\u51fd\u6570\uff0c\u65e0\u526f\u4f5c\u7528\u4e14\u7ed3\u679c\u4e00\u81f4\uff1b\u4f7f\u7528\u4e0d\u53ef\u53d8\u6570\u636e\u7ed3\u6784\uff0c\u9632\u6b62\u5e76\u53d1\u95ee\u9898\u548c\u6570\u636e\u4fee\u6539\uff1b\u5229\u7528 Java 8 \u6d41\u5f0f API\uff0c\u4ee5\u7b80\u6d01\u65b9\u5f0f\u5904\u7406\u6570\u636e\u3002<\/p>\n

<\/p>\n

\u5229\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u89e3\u51b3 Java \u4ee3\u7801\u590d\u6742\u6027\u95ee\u9898<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u7f16\u7a0b\u662f\u4e00\u79cd\u7f16\u7a0b\u8303\u5f0f\uff0c\u5b83\u5f3a\u8c03\u4f7f\u7528\u7eaf\u51fd\u6570\u548c\u4e0d\u53ef\u53d8\u6570\u636e\u7ed3\u6784\u3002\u5b83\u53ef\u4ee5\u6539\u5584\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3001\u7ef4\u62a4\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u5728 Java \u4e2d\u5e94\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u6280\u672f\u6765\u89e3\u51b3\u590d\u6742\u6027\u95ee\u9898\u3002<\/p>\n

\u7eaf\u51fd\u6570<\/strong><\/p>\n

\u7eaf\u51fd\u6570\u662f\u6ca1\u6709\u526f\u4f5c\u7528\u7684\u51fd\u6570\u3002\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u8f93\u5165\u76f8\u540c\u7684\u503c\u65f6\u59cb\u7ec8\u4ea7\u751f\u76f8\u540c\u7684\u7ed3\u679c\uff0c\u5e76\u4e14\u4e0d\u4f1a\u4fee\u6539\u5916\u90e8\u72b6\u6001\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 final<\/code> \u5173\u952e\u5b57\u58f0\u660e\u53d8\u91cf\u5e76\u907f\u514d\u4fee\u6539\u5b83\u4eec\u6765\u5b9e\u73b0\u7eaf\u51fd\u6570\u3002<\/p>\n

\u4e0d\u53ef\u53d8\u6570\u636e\u7ed3\u6784<\/strong><\/p>\n

\u4e0d\u53ef\u53d8\u6570\u636e\u7ed3\u6784\u4e0d\u80fd\u88ab\u66f4\u6539\u3002\u8fd9\u6709\u52a9\u4e8e\u9632\u6b62\u5e76\u53d1\u95ee\u9898\uff0c\u5e76\u4f7f\u4ee3\u7801\u66f4\u6613\u4e8e\u63a8\u6d4b\u548c\u8c03\u8bd5\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Collections.unmodifiableList()<\/code> \u7b49\u65b9\u6cd5\u521b\u5efa\u4e0d\u53ef\u53d8\u6570\u636e\u7ed3\u6784\u3002<\/p>\n

\u6d41\u5f0f API<\/strong><\/p>\n

Java 8 \u5f15\u5165\u4e86\u6d41\u5f0f API\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u98ce\u683c\u6765\u5904\u7406\u6570\u636e\u7684\u7b80\u6d01\u65b9\u5f0f\u3002\u6d41\u5141\u8bb8\u4f7f\u7528\u94fe\u5f0f\u8c03\u7528\u5bf9\u6570\u636e\u5143\u7d20\u5e94\u7528\u5404\u79cd\u8f6c\u6362\u548c\u64cd\u4f5c\u3002\u4e0e\u4f20\u7edf\u5faa\u73af\u76f8\u6bd4\uff0c\u6d41\u5f0f API \u53ef\u4ee5\u663e\u7740\u63d0\u9ad8\u4ee3\u7801\u7b80\u6d01\u6027\u548c\u6548\u7387\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n

\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\u4ee3\u7801\uff0c\u5b83\u4f7f\u7528\u4f20\u7edf\u5faa\u73af\u8fc7\u6ee4\u5217\u8868\u4e2d\u7684\u5076\u6570\uff1a<\/p>\n

List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);\nList<Integer> evenNumbers = new ArrayList<>();\nfor (int number : numbers) {\n  if (number % 2 == 0) {\n    evenNumbers.add(number);\n  }\n}<\/pre>\n
\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u4f18\u5316<\/strong><\/p>\n
\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6d41\u5f0f API \u548c\u51fd\u6570\u5f0f\u7f16\u7a0b\u6280\u672f\u4f18\u5316\u8fd9\u6bb5\u4ee3\u7801\uff1a<\/p>\n
List<Integer> evenNumbers = numbers.stream()\n  .filter(number -> number % 2 == 0)\n  .collect(Collectors.toList());<\/pre>\n
\u8fd9\u4e2a\u4f18\u5316\u7684\u7248\u672c\u66f4\u52a0\u7b80\u6d01\u3001\u6613\u8bfb\u5e76\u4e14\u6613\u4e8e\u7ef4\u62a4\u3002\u5b83\u4f7f\u7528 filter()<\/code> \u65b9\u6cd5\u8fc7\u6ee4\u5076\u6570\uff0c\u7136\u540e\u4f7f\u7528 collect()<\/code> \u65b9\u6cd5\u5c06\u7ed3\u679c\u6536\u96c6\u5230\u4e00\u4e2a\u5217\u8868\u4e2d\u3002<\/p>\n
\u7ed3\u8bba<\/strong><\/p>\n
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\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5229\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u89e3\u51b3Java\u4ee3\u7801\u590d\u6742\u6027\u95ee\u9898\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5229\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u89e3\u51b3Java\u4ee3\u7801\u590d...<\/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-202892","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202892","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=202892"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202892\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}