{"id":202858,"date":"2025-05-22T09:55:22","date_gmt":"2025-05-22T01:55:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202858\/"},"modified":"2025-05-22T09:55:22","modified_gmt":"2025-05-22T01:55:22","slug":"%e5%9c%a8-java-%e5%ba%94%e7%94%a8%e4%b8%ad%e8%bf%81%e7%a7%bb%e5%88%b0%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e9%9d%a2%e4%b8%b4%e7%9a%84%e6%8c%91%e6%88%98%e5%92%8c%e7%ad%96%e7%95%a5%e6%98%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202858\/","title":{"rendered":"\u5728 Java \u5e94\u7528\u4e2d\u8fc1\u79fb\u5230\u51fd\u6570\u5f0f\u7f16\u7a0b\u9762\u4e34\u7684\u6311\u6218\u548c\u7b56\u7565\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5728 Java \u5e94\u7528\u4e2d\u8fc1\u79fb\u5230\u51fd\u6570\u5f0f\u7f16\u7a0b\u9762\u4e34\u7684\u6311\u6218\u548c\u7b56\u7565\u662f\u4ec0\u4e48\uff1f<\/h1>\n<p>\u5c0f\u4f19\u4f34\u4eec\u5bf9\u6587\u7ae0\u7f16\u7a0b\u611f\u5174\u8da3\u5417\uff1f\u662f\u5426\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff1f\u5982\u679c\u662f\uff0c\u90a3\u4e48\u672c\u6587\u300a\u5728 Java \u5e94\u7528\u4e2d\u8fc1\u79fb\u5230\u51fd\u6570\u5f0f\u7f16\u7a0b\u9762\u4e34\u7684\u6311\u6218\u548c\u7b56\u7565\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff0c\u672c\u7bc7\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\u3002\u5728\u4e4b\u540e\u7684\u6587\u7ae0\u4e2d\u4e5f\u4f1a\u591a\u591a\u5206\u4eab\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p>Java \u5e94\u7528\u8fc1\u79fb\u5230\u51fd\u6570\u5f0f\u7f16\u7a0b\u9762\u4e34\u6311\u6218\uff0c\u5305\u62ec\u4e0d\u53ef\u53d8\u6027\u3001\u5e76\u53d1\u6027\u3001\u517c\u5bb9\u6027\u3001\u8c03\u8bd5\u7b49\u3002\u7b56\u7565\u5305\u62ec\uff1a\u6e10\u8fdb\u5f0f\u5f15\u5165\u3001\u5229\u7528\u5e93\u3001\u4f7f\u7528\u95ed\u5305\u3001\u8003\u8651\u5e76\u53d1\u5e93\u3001\u517c\u5bb9\u5de5\u5177\u589e\u5f3a\u6d4b\u8bd5\u3002\u5b9e\u6218\u6848\u4f8b\u663e\u793a\u51fd\u6570\u5f0f\u7f16\u7a0b\u53ef\u7b80\u6d01\u5904\u7406\u5e73\u5747\u503c\u8ba1\u7b97\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729952074671cf94a6bce0.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5728 Java \u5e94\u7528\u4e2d\u8fc1\u79fb\u5230\u51fd\u6570\u5f0f\u7f16\u7a0b\u9762\u4e34\u7684\u6311\u6218\u548c\u7b56\u7565<\/strong><\/p>\n<p>\u968f\u7740\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u7684\u5174\u8d77\uff0c\u8d8a\u6765\u8d8a\u591a\u7684 Java \u5f00\u53d1\u4eba\u5458\u5bfb\u6c42\u8fc1\u79fb\u4ed6\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u4ee5\u5145\u5206\u5229\u7528\u5176\u597d\u5904\uff0c\u4f8b\u5982\u53ef\u8bfb\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002\u7136\u800c\uff0c\u8fd9\u79cd\u8fc1\u79fb\u5e76\u975e\u6ca1\u6709\u6311\u6218\u3002<\/p>\n<p><strong>\u6311\u6218\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u4e0d\u53ef\u53d8\u6027\uff1a<\/strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\u5f3a\u8c03\u4e0d\u53ef\u53d8\u6027\uff0c\u8fd9\u53ef\u80fd\u9700\u8981\u5bf9\u73b0\u6709\u4ee3\u7801\u8fdb\u884c\u91cd\u5927\u4fee\u6539\u3002<\/li>\n<li><strong>\u5e76\u53d1\u6027\uff1a<\/strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\u8bed\u8a00\u901a\u5e38\u4f7f\u7528\u4e0d\u53ef\u53d8\u5bf9\u8c61\u548c\u5e76\u53d1\u673a\u5236\uff0c\u53ef\u80fd\u9700\u8981\u9002\u5e94 Java \u4e2d\u7684\u4f20\u7edf\u591a\u7ebf\u7a0b\u6280\u672f\u3002<\/li>\n<li><strong>\u517c\u5bb9\u6027\uff1a<\/strong> Java \u8bed\u8a00\u56fa\u6709\u7684\u9762\u5411\u5bf9\u8c61\u7279\u6027\u53ef\u80fd\u4f1a\u4e0e\u51fd\u6570\u5f0f\u7f16\u7a0b\u98ce\u683c\u4ea7\u751f\u51b2\u7a81\u3002<\/li>\n<li><strong>\u8c03\u8bd5\uff1a<\/strong>\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u53ef\u80fd\u66f4\u96be\u8c03\u8bd5\uff0c\u56e0\u4e3a\u53ef\u80fd\u7f3a\u4e4f\u8c03\u8bd5\u5de5\u5177\u3002<\/li>\n<\/ul>\n<p><strong>\u7b56\u7565\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u91c7\u7528\u6e10\u8fdb\u5f0f\u65b9\u6cd5\uff1a<\/strong>\u9010\u6b65\u5c06\u51fd\u6570\u5f0f\u6982\u5ff5\u5f15\u5165\u5230\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u4ece\u5c0f\u7684\u6a21\u5757\u6216\u7c7b\u5f00\u59cb\u3002<\/li>\n<li><strong>\u5229\u7528\u5e93\uff1a<\/strong>\u4f7f\u7528 Stream API\u3001Optional \u6216 Guava \u7b49 Java \u5e93\u6765\u7b80\u5316\u51fd\u6570\u5f0f\u7f16\u7a0b\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u4f7f\u7528\u95ed\u5305\uff1a<\/strong>\u5229\u7528\u95ed\u5305\u6765\u83b7\u53d6\u5171\u4eab\u53ef\u53d8\u72b6\u6001\uff0c\u540c\u65f6\u4fdd\u6301\u4e0d\u53ef\u53d8\u6027\u3002<\/li>\n<li><strong>\u8003\u8651\u5e76\u53d1\u5e93\uff1a<\/strong>\u63a2\u7d22 Reactor\u3001Vert.x \u6216 Loom \u7b49\u5e76\u53d1\u5e93\uff0c\u4ee5\u66f4\u597d\u5730\u5904\u7406\u51fd\u6570\u5f0f\u4ee3\u7801\u4e2d\u7684\u5e76\u53d1\u6027\u3002<\/li>\n<li><strong>\u5bfb\u627e\u517c\u5bb9\u5de5\u5177\uff1a<\/strong>\u67e5\u627e\u4e0e\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u517c\u5bb9\u7684\u5de5\u5177\uff0c\u4f8b\u5982 Lambdify \u6216 Javassist\u3002<\/li>\n<li><strong>\u52a0\u5f3a\u6d4b\u8bd5\uff1a<\/strong>\u4f7f\u7528\u5355\u200b\u200b\u5143\u548c\u96c6\u6210\u6d4b\u8bd5\u6765\u9a8c\u8bc1\u51fd\u6570\u5f0f\u4ee3\u7801\u7684\u6b63\u786e\u6027\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u8ba9\u6211\u4eec\u8003\u8651\u4e00\u4e2a\u7b80\u5355\u7684 Java \u51fd\u6570\uff0c\u5b83\u8ba1\u7b97\u4e00\u4e2a\u6574\u6570\u5217\u8868\u7684\u5e73\u5747\u503c\uff1a<\/p>\n<pre>import java.util.List;\n\npublic class AverageCalculator {\n\n    public static double calculateAverage(List&lt;Integer&gt; numbers) {\n        double sum = 0;\n        for (int number : numbers) {\n            sum += number;\n        }\n        return sum \/ numbers.size();\n    }\n}<\/pre>\n<p>\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u66f4\u7b80\u6d01\u548c\u53ef\u8bfb\u7684\u65b9\u5f0f\u7f16\u5199\u76f8\u540c\u7684\u51fd\u6570\uff1a<\/p>\n<pre>import java.util.List;\nimport java.util.stream.Collectors;\n\npublic class AverageCalculator {\n\n    public static double calculateAverage(List&lt;Integer&gt; numbers) {\n        return numbers.stream()\n                .mapToDouble(Integer::doubleValue)\n                .average()\n                .orElse(0);\n    }\n}<\/pre>\n<p>\u6b64\u51fd\u6570\u5f0f\u5b9e\u73b0\u4f7f\u7528 Stream API\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u4f7f\u7528\u94fe\u5f0f\u64cd\u4f5c\u4ee5\u58f0\u660e\u65b9\u5f0f\u904d\u5386\u548c\u5904\u7406\u5143\u7d20\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u5728 Java \u5e94\u7528\u4e2d\u8fc1\u79fb\u5230\u51fd\u6570\u5f0f\u7f16\u7a0b\u9762\u4e34\u7684\u6311\u6218\u548c\u7b56\u7565\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Java \u5e94\u7528\u4e2d\u8fc1\u79fb\u5230\u51fd\u6570\u5f0f&#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-202858","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202858","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=202858"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202858\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}