{"id":202622,"date":"2025-05-22T10:03:37","date_gmt":"2025-05-22T02:03:37","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202622\/"},"modified":"2025-05-22T10:03:37","modified_gmt":"2025-05-22T02:03:37","slug":"java-%e5%87%bd%e6%95%b0%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e6%8a%80%e5%b7%a7%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202622\/","title":{"rendered":"Java \u51fd\u6570\u6027\u80fd\u4f18\u5316\u6280\u5de7\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java \u51fd\u6570\u6027\u80fd\u4f18\u5316\u6280\u5de7\u6709\u54ea\u4e9b\uff1f<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava \u51fd\u6570\u6027\u80fd\u4f18\u5316\u6280\u5de7\u6709\u54ea\u4e9b\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p>Java \u51fd\u6570\u6027\u80fd\u4f18\u5316\u6280\u5de7\u5305\u62ec\uff1a\u4f18\u5316\u53c2\u6570\u4f20\u9012\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784\u9009\u62e9\u9ad8\u6548\u7684\u7b97\u6cd5\u5c06\u51fd\u6570\u5e76\u884c\u5316\u6807\u8bc6\u548c\u4f18\u5316\u70ed\u70b9\u4ee3\u7801\u91cd\u6784\u4ee3\u7801\u6d88\u9664\u5197\u4f59\u7ba1\u7406\u5185\u5b58\u907f\u514d\u6cc4\u6f0f<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729925115671c8ffb4e3e5.jpg\" class=\"aligncenter\"><\/p>\n<h2>Java \u51fd\u6570\u6027\u80fd\u4f18\u5316\u6280\u5de7<\/h2>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>Java \u51fd\u6570\u7684\u6027\u80fd\u4f18\u5316\u5bf9\u4e8e\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u6574\u4f53\u8868\u73b0\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u91c7\u7528\u9002\u5f53\u7684\u4f18\u5316\u6280\u672f\uff0c\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u51fd\u6570\u6267\u884c\u65f6\u95f4\uff0c\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<p><strong>\u4f18\u5316\u6280\u5de7<\/strong><\/p>\n<p><strong>1. \u51fd\u6570\u53c2\u6570\u4f18\u5316<\/strong><\/p>\n<ul>\n<li>\u907f\u514d\u4f20\u9012\u5927\u578b\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570\u3002\u8003\u8651\u4f7f\u7528\u5f15\u7528\u6216\u503c\u7c7b\u578b\u7684\u8f7b\u91cf\u7ea7\u5bf9\u8c61\u3002<\/li>\n<li>\u907f\u514d\u4f20\u9012\u53ef\u53d8\u53c2\u6570\u3002\u8fd9\u4f1a\u4ea7\u751f\u4e0d\u5fc5\u8981\u7684\u526f\u672c\uff0c\u4ece\u800c\u964d\u4f4e\u6027\u80fd\u3002<\/li>\n<\/ul>\n<p><strong>2. \u6570\u636e\u7ed3\u6784\u9009\u62e9<\/strong><\/p>\n<ul>\n<li>\u9009\u62e9\u9002\u5408\u6240\u9700\u64cd\u4f5c\u7684\u6570\u636e\u7ed3\u6784\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u9891\u7e41\u7684\u67e5\u627e\u64cd\u4f5c\uff0cHashMap \u6bd4 LinkedList\u66f4\u5408\u9002\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528\u8fc7\u5927\u7684\u6570\u636e\u7ed3\u6784\u3002\u53ea\u4fdd\u7559\u5fc5\u8981\u7684\u5143\u7d20\uff0c\u4ee5\u63d0\u9ad8\u68c0\u7d22\u548c\u904d\u5386\u6548\u7387\u3002<\/li>\n<\/ul>\n<p><strong>3. \u7b97\u6cd5\u9009\u62e9<\/strong><\/p>\n<ul>\n<li>\u9009\u62e9\u9ad8\u6548\u7684\u7b97\u6cd5\u3002\u8003\u8651\u641c\u7d22\u7b97\u6cd5\u7684\u590d\u6742\u5ea6\uff0c\u5982\u4e8c\u5206\u641c\u7d22\u6bd4\u7ebf\u6027\u641c\u7d22\u66f4\u6709\u6548\u3002<\/li>\n<li>\u907f\u514d\u5d4c\u5957\u5faa\u73af\uff0c\u56e0\u4e3a\u5b83\u4f1a\u663e\u8457\u589e\u52a0\u6267\u884c\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<p><strong>4. \u5e76\u884c\u5316<\/strong><\/p>\n<ul>\n<li>\u5982\u679c\u53ef\u80fd\uff0c\u5c06\u51fd\u6570\u5e76\u884c\u5316\u3002\u8fd9\u6d89\u53ca\u5c06\u4efb\u52a1\u5206\u914d\u7ed9\u591a\u4e2a\u7ebf\u7a0b\u6216\u6838\uff0c\u4ece\u800c\u7f29\u77ed\u6267\u884c\u65f6\u95f4\u3002<\/li>\n<li>\u4f7f\u7528 Java \u5e76\u53d1\u6846\u67b6\uff08\u4f8b\u5982 ExecutorService\uff09\u6765\u5b9e\u73b0\u5e76\u884c\u5316\u3002<\/li>\n<\/ul>\n<p><strong>5. \u70ed\u70b9\u4ee3\u7801\u6807\u8bc6<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\uff08\u4f8b\u5982 JProfiler \u6216 VisualVM\uff09\u6765\u8bc6\u522b\u70ed\u70b9\u4ee3\u7801\u3002\u8fd9\u4e9b\u90e8\u5206\u662f\u51fd\u6570\u4e2d\u82b1\u8d39\u6700\u957f\u65f6\u95f4\u6267\u884c\u7684\u90e8\u5206\u3002<\/li>\n<li>\u4e13\u6ce8\u4e8e\u4f18\u5316\u70ed\u70b9\u4ee3\u7801\uff0c\u4ee5\u83b7\u5f97\u6700\u5927\u7684\u6027\u80fd\u63d0\u5347\u3002<\/li>\n<\/ul>\n<p><strong>6. \u4ee3\u7801\u91cd\u6784<\/strong><\/p>\n<ul>\n<li>\u6d88\u9664\u5197\u4f59\u4ee3\u7801\u3002\u91cd\u590d\u7684\u4ee3\u7801\u4f1a\u589e\u52a0\u6267\u884c\u65f6\u95f4\u3002<\/li>\n<li>\u4f7f\u7528\u4ee3\u7801\u751f\u6210\u5de5\u5177\uff08\u4f8b\u5982 Lombok\uff09\u6765\u81ea\u52a8\u5316\u4efb\u52a1\uff0c\u5e76\u51cf\u5c11\u6837\u677f\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<p><strong>7. \u5185\u5b58\u7ba1\u7406<\/strong><\/p>\n<ul>\n<li>\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3002\u786e\u4fdd\u5728\u4e0d\u518d\u9700\u8981\u53d8\u91cf\u65f6\u91ca\u653e\u5b83\u4eec\u3002<\/li>\n<li>\u76d1\u63a7\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\uff0c\u4ee5\u8bc6\u522b\u548c\u89e3\u51b3\u4efb\u4f55\u5185\u5b58\u76f8\u5173\u95ee\u9898\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u51fd\u6570\uff1a<\/p>\n<pre>\/\/ \u8ba1\u7b97\u5217\u8868\u4e2d\u6700\u5927\u503c\npublic int findMax(List&lt;Integer&gt; list) {\n    int max = Integer.MIN_VALUE;\n    for (int number : list) {\n        if (number &gt; max) {\n            max = number;\n        }\n    }\n    return max;\n}<\/pre>\n<p><strong>\u4f18\u5316<\/strong><\/p>\n<p>\u901a\u8fc7\u5e94\u7528\u4ee5\u4e0b\u6280\u5de7\uff0c\u53ef\u4ee5\u4f18\u5316\u6b64\u51fd\u6570\uff1a<\/p>\n<ol>\n<li><strong>\u4f7f\u7528\u66f4\u5feb\u7684\u641c\u7d22\u7b97\u6cd5\uff1a<\/strong>\u4f7f\u7528\u4e8c\u5206\u641c\u7d22\u7b97\u6cd5\u66ff\u6362\u7ebf\u6027\u641c\u7d22\uff0c\u4ee5\u66f4\u5feb\u5730\u67e5\u627e\u6700\u5927\u503c\u3002<\/li>\n<li><strong>\u907f\u514d\u521b\u5efa\u4e0d\u5fc5\u8981\u7684\u5bf9\u8c61\uff1a<\/strong>\u5c06\u5c40\u90e8\u53d8\u91cf <code>max<\/code> \u58f0\u660e\u4e3a <code>int<\/code>\uff0c\u800c\u4e0d\u662f <code>Integer<\/code>\u3002<\/li>\n<\/ol>\n<p><strong>\u4f18\u5316\u540e\u7684\u4ee3\u7801\uff1a<\/strong><\/p>\n<pre>public int findMax(List&lt;Integer&gt; list) {\n    int max = Integer.MIN_VALUE;\n    int start = 0;\n    int end = list.size() - 1;\n\n    while (start &lt;= end) {\n        int middle = (start + end) \/ 2;\n        if (list.get(middle) &gt; max) {\n            max = list.get(middle);\n        }\n        if (list.get(middle) &lt; max) {\n            end = middle - 1;\n        } else {\n            start = middle + 1;\n        }\n    }\n    return max;\n}<\/pre>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\uff0c<code>findMax<\/code> \u51fd\u6570\u7684\u6027\u80fd\u5f97\u5230\u663e\u7740\u63d0\u5347\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u5927\u578b\u5217\u8868\u65f6\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300aJava \u51fd\u6570\u6027\u80fd\u4f18\u5316\u6280\u5de7\u6709\u54ea\u4e9b\uff1f\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\u4f18\u5316\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u51fd\u6570\u6027\u80fd\u4f18\u5316\u6280\u5de7\u6709\u54ea\u4e9b&#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-202622","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202622","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=202622"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202622\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}