{"id":202689,"date":"2025-05-22T09:05:11","date_gmt":"2025-05-22T01:05:11","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202689\/"},"modified":"2025-05-22T09:05:11","modified_gmt":"2025-05-22T01:05:11","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%b9%b6%e8%a1%8c%e5%a4%84%e7%90%86%e6%8f%90%e5%8d%87-java-%e5%87%bd%e6%95%b0%e6%80%a7%e8%83%bd%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202689\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u5e76\u884c\u5904\u7406\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f"},"content":{"rendered":"

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\u5982\u4f55\u4f7f\u7528\u5e76\u884c\u5904\u7406\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f<\/h1>\n

\u76ee\u524d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e\u6587\u7ae0<\/span>\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587\u300a\u5982\u4f55\u4f7f\u7528\u5e76\u884c\u5904\u7406\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f\u300b<\/span>\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60\u6587\u7ae0<\/span>\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n

\u4f7f\u7528\u5e76\u884c\u5904\u7406\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\u7684\u65b9\u6cd5\uff1a\u8bc6\u522b\u53ef\u5e76\u884c\u5316\u7684\u4ee3\u7801\u90e8\u5206\u3002\u521b\u5efa\u5e76\u884c\u6d41\u3002\u4f7f\u7528\u5e76\u884c\u64cd\u4f5c\uff0c\u4f8b\u5982 forEach()\u3001map() \u548c filter()\u3002\u6307\u5b9a\u5e76\u53d1\u7ea7\u522b\u3002\u8be5\u65b9\u6cd5\u53ef\u663e\u8457\u63d0\u9ad8\u8ba1\u7b97\u5bc6\u96c6\u578b\u51fd\u6570\u7684\u6027\u80fd\uff0c\u5b9e\u6218\u6848\u4f8b\u663e\u793a\u5e76\u884c\u7248\u672c\u6bd4\u975e\u5e76\u884c\u7248\u672c\u5feb\u7ea6 7 \u500d\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u4f7f\u7528\u5e76\u884c\u5904\u7406\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd<\/strong><\/p>\n

\u5728 Java \u4e2d\u4f7f\u7528\u5e76\u884c\u5904\u7406\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u8ba1\u7b97\u5bc6\u96c6\u578b\u51fd\u6570\u7684\u6027\u80fd\u3002\u901a\u8fc7\u5c06\u4efb\u52a1\u62c6\u5206\u6210\u8f83\u5c0f\u7684\u90e8\u5206\u5e76\u5728\u591a\u4e2a\u5185\u6838\u4e0a\u540c\u65f6\u6267\u884c\u5b83\u4eec\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5e76\u884c\u5904\u7406\u3002<\/p>\n

\u6b65\u9aa4\uff1a<\/strong><\/p>\n

    \n
  1. \u8bc6\u522b\u53ef\u5e76\u884c\u7684\u4ee3\u7801\u90e8\u5206\uff1a<\/strong>\u627e\u51fa\u53ef\u4ee5\u540c\u65f6\u6267\u884c\u800c\u4e0d\u4f1a\u5e72\u6270\u5f7c\u6b64\u7684\u90e8\u5206\u3002<\/li>\n
  2. \u521b\u5efa\u5e76\u884c\u6d41\uff1a<\/strong>\u4f7f\u7528 java.util.stream.Stream.parallel()<\/code> \u521b\u5efa\u4e00\u4e2a\u5e76\u884c\u6d41\u3002<\/li>\n
  3. \u4f7f\u7528\u5e76\u884c\u64cd\u4f5c\uff1a<\/strong>\u5bf9\u6d41\u8fdb\u884c\u5e76\u884c\u64cd\u4f5c\uff0c\u4f8b\u5982 forEach()<\/code>\u3001map()<\/code> \u548c filter()<\/code>\u3002<\/li>\n
  4. \u6307\u5b9a\u5e76\u53d1\u7ea7\u522b\uff1a<\/strong>\u901a\u8fc7\u8bbe\u7f6e java.util.concurrent.ForkJoinPool.commonPool().setParallelism()<\/code>\uff0c\u53ef\u4ee5\u6307\u5b9a\u5e76\u884c\u7ebf\u7a0b\u6570\u3002<\/li>\n<\/ol>\n

    \u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n

    \/\/ \u672a\u5e76\u884c\u5316\u7684\u4ee3\u7801\npublic static List<Integer> doubleList(List<Integer> list) {\n    List<Integer> doubled = new ArrayList<>();\n    for (int num : list) {\n        doubled.add(num * 2);\n    }\n    return doubled;\n}\n\n\/\/ \u5e76\u884c\u5316\u4ee3\u7801\npublic static List<Integer> doubleListParallel(List<Integer> list) {\n    return list.parallelStream()\n        .map(num -> num * 2)\n        .collect(Collectors.toList());\n}<\/pre>\n
    \u6027\u80fd\u6bd4\u8f83\uff1a<\/strong><\/p>\n
    \u4f7f\u7528\u57fa\u51c6\u6d4b\u8bd5\u5de5\u5177\uff0c\u5bf9\u4e0a\u8ff0\u4e24\u4e2a\u51fd\u6570\u8fdb\u884c\u6027\u80fd\u6bd4\u8f83\u3002\u5bf9\u4e8e\u4e00\u4e2a\u5305\u542b 100 \u4e07\u4e2a\u6574\u6570\u7684\u5217\u8868\uff0c\u5e76\u884c\u7248\u672c\u5728 8 \u6838\u7cfb\u7edf\u4e0a\u6bd4\u975e\u5e76\u884c\u7248\u672c\u5feb\u5927\u7ea6 7 \u500d\u3002<\/p>\n
    \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5e76\u975e\u6240\u6709\u51fd\u6570\u90fd\u9002\u5408\u5e76\u884c\u5904\u7406\u3002\u5f53\u4efb\u52a1\u4f9d\u8d56\u4e8e\u5f7c\u6b64\u6216\u65e0\u6cd5\u8f7b\u677e\u62c6\u5206\u4e3a\u8f83\u5c0f\u90e8\u5206\u65f6\uff0c\u5e76\u884c\u5904\u7406\u53ef\u80fd\u4e0d\u4f1a\u63d0\u4f9b\u663e\u8457\u7684\u6027\u80fd\u63d0\u5347\u3002<\/p>\n
    \u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528\u5e76\u884c\u5904\u7406\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f\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":"
    \u5982\u4f55\u4f7f\u7528\u5e76\u884c\u5904\u7406\u63d0\u5347 Java ...<\/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-202689","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202689","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=202689"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202689\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}