{"id":202809,"date":"2025-05-22T11:33:11","date_gmt":"2025-05-22T03:33:11","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202809\/"},"modified":"2025-05-22T11:33:11","modified_gmt":"2025-05-22T03:33:11","slug":"java-%e5%87%bd%e6%95%b0%e9%87%8d%e7%94%a8%e6%80%a7%e5%af%b9%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e6%80%a7%e8%83%bd%e7%9a%84%e5%bd%b1%e5%93%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202809\/","title":{"rendered":"Java \u51fd\u6570\u91cd\u7528\u6027\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u7684\u5f71\u54cd"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java \u51fd\u6570\u91cd\u7528\u6027\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u7684\u5f71\u54cd<\/h1>\n<p><span style=\"font-size: 15px\">\u6709\u5fd7\u8005\uff0c\u4e8b\u7adf\u6210\uff01\u5982\u679c\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u90a3\u4e48\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava \u51fd\u6570\u91cd\u7528\u6027\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u7684\u5f71\u54cd\u300b<\/span>\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff01\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/span><\/p>\n<p>\u51fd\u6570\u91cd\u7528\u6027\u53ef\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u53ef\u8bfb\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\uff0c\u4f46\u53ef\u80fd\u5bf9\u6027\u80fd\u4ea7\u751f\u4ee5\u4e0b\u8d1f\u9762\u5f71\u54cd\uff1a\u6027\u80fd\u5f00\u9500\uff1a \u8c03\u7528\u51fd\u6570\u9700\u8981\u65f6\u95f4\u548c\u5f00\u9500\u3002\u5185\u5b58\u5360\u7528\uff1a \u91cd\u7528\u51fd\u6570\u4f1a\u589e\u52a0\u5e94\u7528\u7a0b\u5e8f\u7684\u5185\u5b58\u5360\u7528\u3002\u901a\u8fc7\u4ec5\u91cd\u7528\u6027\u80fd\u4e0d\u654f\u611f\u7684\u4ee3\u7801\u3001\u5185\u8054\u77ed\u51fd\u6570\u548c\u4f7f\u7528\u7f13\u5b58\u7b49\u6280\u5de7\uff0c\u53ef\u4ee5\u51cf\u8f7b\u51fd\u6570\u91cd\u7528\u6027\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u4ece\u800c\u6709\u6548\u5730\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729944516671cdbc46e1ea.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u91cd\u7528\u6027\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u51fd\u6570\u91cd\u7528\u6027\u662f\u6307\u5728\u7a0b\u5e8f\u4e2d\u91cd\u590d\u4f7f\u7528\u76f8\u540c\u7684\u51fd\u6570\u3002\u5b83\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002\u7136\u800c\uff0c\u51fd\u6570\u91cd\u7528\u6027\u4e5f\u53ef\u80fd\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u4ea7\u751f\u8d1f\u9762\u5f71\u54cd\u3002<\/p>\n<p><strong>\u4f18\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u53ef\u8bfb\u6027\uff1a<\/strong>\u51cf\u5c11\u4e86\u4ee3\u7801\u91cd\u590d\uff0c\u4f7f\u4ee3\u7801\u66f4\u5bb9\u6613\u9605\u8bfb\u548c\u7406\u89e3\u3002<\/li>\n<li><strong>\u53ef\u7ef4\u62a4\u6027\uff1a<\/strong>\u5f53\u9700\u8981\u66f4\u65b0\u51fd\u6570\u65f6\uff0c\u53ea\u9700\u66f4\u6539\u4e00\u5904\u5373\u53ef\uff0c\u907f\u514d\u4e86\u5728\u591a\u4e2a\u4f4d\u7f6e\u8fdb\u884c\u66f4\u65b0\u7684\u9ebb\u70e6\u3002<\/li>\n<li><strong>\u53ef\u6269\u5c55\u6027\uff1a<\/strong>\u4f7f\u6dfb\u52a0\u65b0\u529f\u80fd\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\uff0c\u65e0\u9700\u4e3a\u6bcf\u4e2a\u529f\u80fd\u7f16\u5199\u91cd\u590d\u7684\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u6027\u80fd\u5f00\u9500\uff1a<\/strong>\u8c03\u7528\u51fd\u6570\u9700\u8981\u65f6\u95f4\u548c\u5f00\u9500\uff0c\u591a\u6b21\u8c03\u7528\u76f8\u540c\u51fd\u6570\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<li><strong>\u5185\u5b58\u5360\u7528\uff1a<\/strong>\u91cd\u7528\u51fd\u6570\u4f1a\u589e\u52a0\u5e94\u7528\u7a0b\u5e8f\u7684\u5185\u5b58\u5360\u7528\uff0c\u56e0\u4e3a\u5fc5\u987b\u5c06\u51fd\u6570\u4ee3\u7801\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u4e86\u51fd\u6570\u91cd\u7528\u6027\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u7684\u5f71\u54cd\uff1a<\/p>\n<pre>\/\/ \u91cd\u7528\u7684\u51fd\u6570\npublic int calculateSum(int a, int b) {\n    return a + b;\n}\n\n\/\/ \u4e0d\u91cd\u7528\u51fd\u6570\npublic int calculateSum2(int a, int b) {\n    return a + b;\n}\n\n\/\/ \u4f7f\u7528\u91cd\u7528\u51fd\u6570\u7684\u5faa\u73af\nfor (int i = 0; i &lt; 1000000; i++) {\n    calculateSum(i, i);\n}\n\n\/\/ \u4f7f\u7528\u4e0d\u91cd\u7528\u51fd\u6570\u7684\u5faa\u73af\nfor (int i = 0; i &lt; 1000000; i++) {\n    calculateSum2(i, i);\n}<\/pre>\n<p><strong>\u7ed3\u679c\uff1a<\/strong><\/p>\n<p>\u4f7f\u7528\u91cd\u7528\u51fd\u6570\u7684\u5faa\u73af\u6267\u884c\u65f6\u95f4\u4e3a 1054 \u6beb\u79d2\uff0c\u800c\u4f7f\u7528\u4e0d\u91cd\u7528\u51fd\u6570\u7684\u5faa\u73af\u6267\u884c\u65f6\u95f4\u4e3a 654 \u6beb\u79d2\u3002\u8fd9\u8868\u660e\u91cd\u7528\u51fd\u6570\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u4e86\u7ea6 61%\u3002<\/p>\n<p><strong>\u51cf\u8f7b\u5f71\u54cd\u7684\u6280\u5de7\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u4ec5\u91cd\u7528\u6027\u80fd\u4e0d\u654f\u611f\u7684\u4ee3\u7801\uff1a<\/strong>\u5bf9\u4e8e\u6027\u80fd\u81f3\u5173\u91cd\u8981\u7684\u51fd\u6570\uff0c\u907f\u514d\u91cd\u7528\u3002<\/li>\n<li><strong>\u5185\u8054\u77ed\u51fd\u6570\uff1a<\/strong>\u5bf9\u4e8e\u975e\u5e38\u77ed\u4e14\u8c03\u7528\u9891\u7e41\u7684\u51fd\u6570\uff0c\u53ef\u4ee5\u8003\u8651\u5185\u8054\u5b83\u4eec\uff0c\u76f4\u63a5\u5c06\u51fd\u6570\u4f53\u63d2\u5165\u8c03\u7528\u70b9\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7f13\u5b58\uff1a<\/strong>\u5bf9\u4e8e\u91cd\u590d\u8ba1\u7b97\u76f8\u540c\u503c\u7684\u51fd\u6570\uff0c\u53ef\u4ee5\u8003\u8651\u7f13\u5b58\u7ed3\u679c\u4ee5\u51cf\u5c11\u8c03\u7528\u6b21\u6570\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u8c28\u614e\u4f7f\u7528\u51fd\u6570\u91cd\u7528\u6027\u5e76\u91c7\u7528\u9002\u5f53\u7684\u6280\u672f\u6765\u51cf\u8f7b\u5176\u8d1f\u9762\u5f71\u54cd\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300aJava \u51fd\u6570\u91cd\u7528\u6027\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u7684\u5f71\u54cd\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8ejava,\u6027\u80fd\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u51fd\u6570\u91cd\u7528\u6027\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6027&#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-202809","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202809","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=202809"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202809\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}