{"id":202633,"date":"2025-05-22T09:00:00","date_gmt":"2025-05-22T01:00:00","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202633\/"},"modified":"2025-05-22T09:00:00","modified_gmt":"2025-05-22T01:00:00","slug":"java%e5%87%bd%e6%95%b0%e5%86%85%e5%ad%98%e4%bc%98%e5%8c%96%e7%9a%84%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202633\/","title":{"rendered":"Java\u51fd\u6570\u5185\u5b58\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

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

Java\u51fd\u6570\u5185\u5b58\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300aJava\u51fd\u6570\u5185\u5b58\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01<\/span><\/p>\n

Java \u51fd\u6570\u5185\u5b58\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5\uff1a\u4f7f\u7528\u57fa\u672c\u7c7b\u578b\u5b58\u50a8\u6570\u636e\uff0c\u907f\u514d\u88c5\u7bb1\u3002\u91c7\u7528\u6570\u7ec4\u6216\u96c6\u5408\u5b58\u50a8\u5927\u91cf\u5143\u7d20\u3002\u4f7f\u7528\u5c40\u90e8\u53d8\u91cf\u5b58\u50a8\u6570\u636e\uff0c\u51cf\u5c11\u5168\u5c40\u53d8\u91cf\u4f7f\u7528\u3002\u5c3d\u91cf\u51cf\u5c11\u5bf9\u8c61\u521b\u5efa\uff0c\u91cd\u590d\u4f7f\u7528\u5bf9\u8c61\u3002<\/p>\n

<\/p>\n

Java \u51fd\u6570\u5185\u5b58\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u4f18\u5316\u51fd\u6570\u5185\u5b58\u4f7f\u7528\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u6539\u5584\u6027\u80fd\u548c\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u3002\u4ee5\u4e0b\u662f\u6700\u6709\u6548\u7684\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n

    \n
  1. \u4f7f\u7528\u57fa\u672c\u7c7b\u578b\uff1a<\/strong> \u4f7f\u7528\u57fa\u672c\u7c7b\u578b\uff08\u5982 int\u3001long\u3001float\uff09\u6765\u5b58\u50a8\u6570\u636e\uff0c\u800c\u4e0d\u662f\u5bf9\u8c61\u3002\u5b83\u4eec\u5360\u7528\u66f4\u5c11\u7684\u5185\u5b58\uff0c\u5e76\u5177\u6709\u66f4\u597d\u7684\u6027\u80fd\u3002<\/li>\n<\/ol>\n
    int number = 10;\n\/\/ \u800c\u4e0d\u662f\nInteger number = new Integer(10);<\/pre>\n
      \n
    1. \u907f\u514d\u4e0d\u5fc5\u8981\u7684\u88c5\u7bb1\uff1a<\/strong> \u88c5\u7bb1\u8fc7\u7a0b\u5c06\u57fa\u672c\u7c7b\u578b\u8f6c\u6362\u4e3a\u5bf9\u8c61\uff0c\u4ece\u800c\u589e\u52a0\u4e86\u5185\u5b58\u5f00\u9500\u3002\u5c3d\u91cf\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u88c5\u7bb1\u3002<\/li>\n<\/ol>\n
      int number = 10;\n\/\/ \u800c\u4e0d\u662f\nInteger number = Integer.valueOf(10);<\/pre>\n
        \n
      1. \u4f7f\u7528\u6570\u7ec4\u6216\u96c6\u5408\uff1a<\/strong> \u5f53\u9700\u8981\u5b58\u50a8\u5927\u91cf\u5143\u7d20\u65f6\uff0c\u4f7f\u7528\u6570\u7ec4\u6216\u96c6\u5408\u800c\u4e0d\u662f\u5bf9\u8c61\u6765\u8282\u7701\u5185\u5b58\u3002<\/li>\n<\/ol>\n
        int[] numbers = {1, 2, 3, 4, 5};\n\/\/ \u800c\u4e0d\u662f\nArrayList<Integer> numbers = new ArrayList<>();<\/pre>\n
          \n
        1. \u4f7f\u7528\u5c40\u90e8\u53d8\u91cf\uff1a<\/strong> \u58f0\u660e\u5c40\u90e8\u53d8\u91cf\u4ee5\u5c06\u6570\u636e\u5b58\u50a8\u5728\u51fd\u6570\u8303\u56f4\u5185\uff0c\u800c\u4e0d\u662f\u5728\u5168\u5c40\u53d8\u91cf\u4e2d\u3002\u5c40\u90e8\u53d8\u91cf\u5728\u51fd\u6570\u9000\u51fa\u65f6\u4f1a\u88ab\u91ca\u653e\uff0c\u4ece\u800c\u8282\u7701\u4e86\u5185\u5b58\u3002<\/li>\n<\/ol>\n
          public void myFunction() {\n    int number = 10;\n    \/\/ ...\n}\n\/\/ \u800c\u4e0d\u662f\nprivate int number = 10;\npublic void myFunction() {\n    \/\/ ...\n}<\/pre>\n
            \n
          1. \u5c3d\u91cf\u51cf\u5c11\u5bf9\u8c61\u521b\u5efa\uff1a<\/strong> \u9891\u7e41\u521b\u5efa\u5bf9\u8c61\u4f1a\u589e\u52a0\u5783\u573e\u56de\u6536\u7684\u538b\u529b\uff0c\u4ece\u800c\u5bfc\u81f4\u5185\u5b58\u788e\u7247\u548c\u6027\u80fd\u4e0b\u964d\u3002\u5c3d\u53ef\u80fd\u91cd\u590d\u4f7f\u7528\u5bf9\u8c61\u3002<\/li>\n<\/ol>\n
            public void myFunction() {\n    StringBuilder builder = new StringBuilder();\n    \/\/ \u591a\u6b21\u8ffd\u52a0\u5185\u5bb9\n}\n\/\/ \u800c\u4e0d\u662f\npublic void myFunction() {\n    for (int i = 0; i < 100; i++) {\n        String s = \"hello\" + i;\n    }\n}<\/pre>\n
            \u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n
            public void optimizeMemoryUsage() {\n    \/\/ \u4f7f\u7528\u57fa\u672c\u7c7b\u578b\u548c\u6570\u7ec4\n    int[] numbers = {1, 2, 3, 4, 5};\n\n    \/\/ \u4f7f\u7528\u5c40\u90e8\u53d8\u91cf\n    for (int number : numbers) {\n        \/\/ ...\n    }\n\n    \/\/ \u91cd\u590d\u4f7f\u7528\u5bf9\u8c61\n    StringBuilder builder = new StringBuilder();\n    for (int number : numbers) {\n        builder.append(number);\n    }\n}<\/pre>\n
            \u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u6700\u4f73\u5b9e\u8df5\uff0c\u53ef\u4ee5\u5927\u5e45\u5ea6\u4f18\u5316 Java \u51fd\u6570\u4e2d\u7684\u5185\u5b58\u4f7f\u7528\uff0c\u4ece\u800c\u63d0\u9ad8\u6027\u80fd\u548c\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u3002<\/p>\n
            \u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aJava\u51fd\u6570\u5185\u5b58\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
            Java\u51fd\u6570\u5185\u5b58\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5\u662f...<\/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-202633","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202633","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=202633"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202633\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}