{"id":203065,"date":"2025-05-22T09:26:56","date_gmt":"2025-05-22T01:26:56","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203065\/"},"modified":"2025-05-22T09:26:56","modified_gmt":"2025-05-22T01:26:56","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e7%9a%84%e5%b1%80%e9%99%90%e6%80%a7%e6%9c%89%e5%93%aa%e4%ba%9b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203065\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027\u6709\u54ea\u4e9b"},"content":{"rendered":"

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

Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027\u6709\u54ea\u4e9b<\/h1>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027\u6709\u54ea\u4e9b\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027\u5305\u62ec\uff1a\u6027\u80fd\u5f00\u9500\u3001\u53ef\u8bfb\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u3001\u5e93\u652f\u6301\u548c\u4e92\u64cd\u4f5c\u6027\u3002\u4f8b\u5982\uff0c\u6d41\u64cd\u4f5c\u9700\u8981\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\uff0c\u589e\u52a0 GC \u538b\u529b\uff1b\u590d\u6742\u7684\u6d41\u7ba1\u9053\u548c lambda \u8868\u8fbe\u5f0f\u53ef\u80fd\u4f1a\u96be\u4ee5\u9605\u8bfb\uff1blambda \u8868\u8fbe\u5f0f\u9690\u85cf\u4e86\u72b6\u6001\u548c\u526f\u4f5c\u7528\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8c03\u8bd5\u95ee\u9898\u3002\u5f00\u53d1\u4eba\u5458\u5e94\u6743\u8861\u8fd9\u4e9b\u5c40\u9650\u6027\u4e0e\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u597d\u5904\uff0c\u4ee5\u786e\u5b9a\u5b83\u662f\u5426\u9002\u5408\u4ed6\u4eec\u7684\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n

<\/p>\n

Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027<\/strong><\/p>\n

Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u4f9b\u4e86\u591a\u79cd\u4f18\u52bf\uff0c\u4f46\u5b83\u4e5f\u6709\u4e00\u4e9b\u56fa\u6709\u7684\u5c40\u9650\u6027\uff1a<\/p>\n

1. \u6027\u80fd\u5f00\u9500<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u7f16\u7a0b\u901a\u5e38\u4f1a\u5f15\u5165\u989d\u5916\u7684\u6027\u80fd\u5f00\u9500\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u65f6\u3002\u8fd9\u4e3b\u8981\u662f\u7531\u4e8e lambda \u8868\u8fbe\u5f0f\u548c\u6d41\u64cd\u4f5c\u9700\u8981\u8fdb\u884c\u989d\u5916\u7684\u5bf9\u8c61\u5206\u914d\u548c GC \u5f00\u9500\u3002<\/p>\n

2. \u53ef\u8bfb\u6027<\/strong><\/p>\n

\u867d\u7136\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u76ee\u6807\u662f\u589e\u5f3a\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\uff0c\u4f46\u5b83\u4e5f\u53ef\u80fd\u4f7f\u4ee3\u7801\u53d8\u5f97\u4e0d\u90a3\u4e48\u76f4\u63a5\u548c\u76f4\u89c2\u3002\u590d\u6742\u7684\u6d41\u7ba1\u9053\u548c lambda \u8868\u8fbe\u5f0f\u53ef\u80fd\u4f1a\u96be\u4ee5\u9605\u8bfb\u548c\u7406\u89e3\uff0c\u5c24\u5176\u662f\u5728\u5927\u578b\u4ee3\u7801\u5e93\u4e2d\u3002<\/p>\n

3. \u53ef\u7ef4\u62a4\u6027<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u4ee3\u7801\u53ef\u80fd\u662f\u96be\u4ee5\u7ef4\u62a4\u7684\uff0c\u56e0\u4e3a\u5b83\u9690\u85cf\u4e86\u72b6\u6001\u548c\u526f\u4f5c\u7528\u3002\u8fd9\u4f7f\u5f97\u5728\u8c03\u8bd5\u6216\u4fee\u6539\u4ee3\u7801\u65f6\u5f88\u96be\u8ddf\u8e2a\u548c\u7406\u89e3\u5176\u884c\u4e3a\u3002<\/p>\n

4. \u5e93\u652f\u6301<\/strong><\/p>\n

\u867d\u7136 Java 8 \u5f15\u5165\u4e86\u51fd\u6570\u5f0f\u7f16\u7a0b\u7279\u5f81\uff0c\u4f46\u5e76\u975e\u6240\u6709\u5e93\u548c\u6846\u67b6\u90fd\u652f\u6301\u5b83\u3002\u8fd9\u53ef\u80fd\u4f1a\u9650\u5236\u5728\u73b0\u6709\u4ee3\u7801\u5e93\u4e2d\u5e94\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u7075\u6d3b\u6027\u3002<\/p>\n

5. \u4e92\u64cd\u4f5c\u6027<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u4ee3\u7801\u4e0e\u9762\u5411\u5bf9\u8c61\u4ee3\u7801\u7684\u4e92\u64cd\u4f5c\u6027\u53ef\u80fd\u662f\u5177\u6709\u6311\u6218\u6027\u7684\u3002\u8fd9\u4e24\u79cd\u7f16\u7a0b\u8303\u4f8b\u5177\u6709\u4e0d\u540c\u7684\u8bed\u4e49\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4ee3\u7801\u8026\u5408\u548c\u7ef4\u62a4\u95ee\u9898\u3002<\/p>\n

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

\u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n

List<String> names = List.of(\"John\", \"Mary\", \"Bob\");\nnames.stream()\n    .filter(name -> name.startsWith(\"M\")) \/\/ \u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u8fdb\u884c\u8fc7\u6ee4\n    .forEach(name -> System.out.println(name)); \/\/ \u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u8fdb\u884c\u6253\u5370<\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027\u663e\u800c\u6613\u89c1\uff1a<\/p>\n
    \n
  • \u6027\u80fd\u5f00\u9500\uff1a\u6d41\u64cd\u4f5c\u9700\u8981\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\uff0c\u589e\u52a0 GC \u538b\u529b\u3002<\/li>\n
  • \u53ef\u8bfb\u6027\uff1a\u6d41\u7ba1\u9053\u548c lambda \u8868\u8fbe\u5f0f\u53ef\u80fd\u96be\u4ee5\u9605\u8bfb\uff0c\u5c24\u5176\u662f\u5bf9\u4e8e\u4e0d\u719f\u6089\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u4eba\u3002<\/li>\n
  • \u53ef\u7ef4\u62a4\u6027\uff1alambda \u8868\u8fbe\u5f0f\u9690\u85cf\u4e86\u5bf9 names<\/code> \u5217\u8868\u7684\u526f\u4f5c\u7528\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8c03\u8bd5\u95ee\u9898\u3002<\/li>\n<\/ul>\n
    \u7ed3\u8bba<\/strong><\/p>\n
    \u5c3d\u7ba1\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728 Java \u4e2d\u63d0\u4f9b\u4e86\u8bb8\u591a\u597d\u5904\uff0c\u4f46\u5b83\u4e5f\u6709\u5176\u56fa\u6709\u7684\u5c40\u9650\u6027\u3002\u5f00\u53d1\u4eba\u5458\u9700\u8981\u6743\u8861\u8fd9\u4e9b\u5c40\u9650\u6027\u4e0e\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u597d\u5904\uff0c\u4ee5\u786e\u5b9a\u5b83\u662f\u5426\u9002\u5408\u4ed6\u4eec\u7684\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n
    \u4eca\u5929\u5173\u4e8e\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027\u6709\u54ea\u4e9b\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5c40\u9650\u6027\u6709\u54ea\u4e9b...<\/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-203065","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203065","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=203065"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203065\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}