{"id":202620,"date":"2025-05-22T08:23:26","date_gmt":"2025-05-22T00:23:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202620\/"},"modified":"2025-05-22T08:23:26","modified_gmt":"2025-05-22T00:23:26","slug":"java-%e5%87%bd%e6%95%b0%e9%87%8d%e7%94%a8%e7%9a%84%e4%b8%8d%e5%90%8c%e6%96%b9%e6%b3%95%e6%af%94%e8%be%83","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202620\/","title":{"rendered":"Java \u51fd\u6570\u91cd\u7528\u7684\u4e0d\u540c\u65b9\u6cd5\u6bd4\u8f83"},"content":{"rendered":"

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

Java \u51fd\u6570\u91cd\u7528\u7684\u4e0d\u540c\u65b9\u6cd5\u6bd4\u8f83<\/h1>\n

\u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6587\u7ae0\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300aJava \u51fd\u6570\u91cd\u7528\u7684\u4e0d\u540c\u65b9\u6cd5\u6bd4\u8f83\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

Java \u51fd\u6570\u91cd\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u65b9\u6cd5\u8c03\u7528\u3001\u9759\u6001\u65b9\u6cd5\u3001\u533f\u540d\u7c7b\u548c Lambda \u8868\u8fbe\u5f0f\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u70b9\u548c\u7f3a\u70b9\uff0c\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\uff0c\u5982\u65b9\u6cd5\u8c03\u7528\u4f20\u9012\u53c2\u6570\u3001\u9759\u6001\u65b9\u6cd5\u6027\u80fd\u66f4\u597d\u3001\u533f\u540d\u7c7b\u8bbf\u95ee\u5916\u90e8\u6570\u636e\u3001Lambda \u8868\u8fbe\u5f0f\u7b80\u6d01\u4e14\u6027\u80fd\u66f4\u597d\u3002<\/p>\n

<\/p>\n

Java \u51fd\u6570\u91cd\u7528\u7684\u4e0d\u540c\u65b9\u6cd5\u6bd4\u8f83<\/h2>\n

\u51fd\u6570\u91cd\u7528<\/strong> \u662f\u6307\u5728\u7a0b\u5e8f\u4e2d\u91cd\u590d\u4f7f\u7528\u540c\u4e00\u529f\u80fd\u800c\u4e0d\u5fc5\u91cd\u65b0\u7f16\u5199\u4ee3\u7801\u3002\u5728 Java \u4e2d\uff0c\u6709\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u51fd\u6570\u91cd\u7528\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\u3002<\/p>\n

1. \u65b9\u6cd5\u8c03\u7528<\/h3>\n

\u6700\u76f4\u63a5\u7684\u51fd\u6570\u91cd\u7528\u65b9\u6cd5\u662f\u901a\u8fc7 \u65b9\u6cd5\u8c03\u7528<\/strong>\u3002\u8fd9\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7136\u540e\u5728\u9700\u8981\u7684\u5730\u65b9\u8c03\u7528\u8be5\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n

public class MyClass {\n    public static void main(String[] args) {\n        System.out.println(multiply(3, 5));\n    }\n\n    public static int multiply(int a, int b) {\n        return a * b;\n    }\n}<\/pre>\n
\u4f18\u70b9\uff1a<\/p>\n
    \n
  • \u7b80\u5355\u6613\u7528<\/li>\n
  • \u53ef\u4ee5\u4f20\u9012\u53c2\u6570<\/li>\n<\/ul>\n
    \u7f3a\u70b9\uff1a<\/p>\n
      \n
    • \u53ef\u80fd\u4f1a\u4ea7\u751f\u5927\u91cf\u5bf9\u8c61\uff08\u5bf9\u4e8e\u9891\u7e41\u8c03\u7528\u7684\u65b9\u6cd5\uff09<\/li>\n<\/ul>\n
      2. \u9759\u6001\u65b9\u6cd5<\/h3>\n
      \u9759\u6001\u65b9\u6cd5<\/strong> \u662f\u4e0d\u5c5e\u4e8e\u4efb\u4f55\u7279\u5b9a\u5bf9\u8c61\u7684\u65b9\u6cd5\u3002\u5b83\u4eec\u53ef\u4ee5\u5728\u7c7b\u7ea7\u522b\u4e0a\u5b9a\u4e49\uff0c\u7136\u540e\u4f7f\u7528\u7c7b\u540d\u76f4\u63a5\u8c03\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n
      public class MyClass {\n    public static void main(String[] args) {\n        System.out.println(Math.max(3, 5));\n    }\n}<\/pre>\n
      \u4f18\u70b9\uff1a<\/p>\n
        \n
      • \u4e0d\u9700\u8981\u521b\u5efa\u5bf9\u8c61<\/li>\n
      • \u6027\u80fd\u66f4\u597d<\/li>\n<\/ul>\n
        \u7f3a\u70b9\uff1a<\/p>\n
          \n
        • \u65e0\u6cd5\u8bbf\u95ee\u975e\u9759\u6001\u6570\u636e<\/li>\n<\/ul>\n
          3. \u533f\u540d\u7c7b<\/h3>\n
          \u533f\u540d\u7c7b<\/strong> \u662f\u6ca1\u6709\u540d\u79f0\u7684\u7c7b\uff0c\u53ef\u4ee5\u5185\u5d4c\u5728\u5176\u4ed6\u7c7b\u4e2d\u521b\u5efa\u3002\u5b83\u4eec\u901a\u5e38\u7528\u4e8e\u4e00\u6b21\u6027\u4efb\u52a1\uff0c\u4f8b\u5982\u4e8b\u4ef6\u5904\u7406\u3002\u4f8b\u5982\uff1a<\/p>\n
          JButton button = new JButton();\nbutton.addActionListener(new ActionListener() {\n    @Override\n    public void actionPerformed(ActionEvent e) {\n        System.out.println(\"Button clicked!\");\n    }\n});<\/pre>\n
          \u4f18\u70b9\uff1a<\/p>\n
            \n
          • \u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u7c7b\u7684\u6570\u636e\u548c\u65b9\u6cd5<\/li>\n
          • \u7b80\u6d01\u660e\u4e86<\/li>\n<\/ul>\n
            \u7f3a\u70b9\uff1a<\/p>\n
              \n
            • \u533f\u540d\u7c7b\u4e2d\u7684\u53d8\u91cf\u548c\u65b9\u6cd5\u4e0d\u80fd\u8bbf\u95ee\u7c7b\u540d<\/li>\n<\/ul>\n
              4. Lambda \u8868\u8fbe\u5f0f<\/h3>\n
              Lambda \u8868\u8fbe\u5f0f<\/strong> \u662f\u81ea Java 8 \u5f15\u5165\u7684\u4e00\u79cd\u7b80\u6d01\u7684\u533f\u540d\u51fd\u6570\u8bed\u6cd5\u3002\u5b83\u4eec\u53ef\u4ee5\u7528\u6765\u4ee3\u66ff\u533f\u540d\u7c7b\uff0c\u8bed\u6cd5\u66f4\u52a0\u7b80\u6d01\u3002\u4f8b\u5982\uff1a<\/p>\n
              JButton button = new JButton();\nbutton.addActionListener(e -> System.out.println(\"Button clicked!\"));<\/pre>\n
              \u4f18\u70b9\uff1a<\/p>\n
                \n
              • \u66f4\u52a0\u7b80\u6d01<\/li>\n
              • \u6027\u80fd\u66f4\u597d<\/li>\n<\/ul>\n
                \u7f3a\u70b9\uff1a<\/p>\n
                  \n
                • \u65e0\u6cd5\u8bbf\u95ee\u5916\u90e8\u7c7b\u4e2d\u7684\u975e final \u53d8\u91cf<\/li>\n<\/ul>\n
                  \u5b9e\u6218\u6848\u4f8b<\/h2>\n
                  \u8003\u8651\u4e00\u4e2a\u94f6\u884c\u5e94\u7528\u7a0b\u5e8f\uff0c\u5176\u4e2d\u6709\u8ba1\u7b97\u5ba2\u6237\u8d26\u6237\u4f59\u989d\u7684\u529f\u80fd\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u51fd\u6570\u91cd\u7528\u65b9\u6cd5\u6765\u5b9e\u73b0\u6b64\u529f\u80fd\uff1a<\/p>\n
                    \n
                  • \u65b9\u6cd5\u8c03\u7528\uff1a<\/strong> \u5728 BankAccount<\/code> \u7c7b\u4e2d\u521b\u5efa getBalance<\/code> \u65b9\u6cd5\uff0c\u7136\u540e\u5728\u9700\u8981\u65f6\u8c03\u7528\u8be5\u65b9\u6cd5\u3002<\/li>\n
                  • \u9759\u6001\u65b9\u6cd5\uff1a<\/strong> \u5728 BankAccount<\/code> \u7c7b\u4e2d\u521b\u5efa getBalance<\/code> \u9759\u6001\u65b9\u6cd5\uff0c\u7136\u540e\u4f7f\u7528 BankAccount.getBalance(accountId)<\/code> \u8c03\u7528\u8be5\u65b9\u6cd5\u3002<\/li>\n
                  • \u533f\u540d\u7c7b\uff1a<\/strong> \u5728 Bank<\/code> \u7c7b\u4e2d\u521b\u5efa\u4e00\u4e2a\u533f\u540d\u5185\u90e8\u7c7b\uff0c\u5b9e\u73b0 AccountService<\/code> \u63a5\u53e3\uff0c\u5e76\u91cd\u5199 getBalance<\/code> \u65b9\u6cd5\u3002<\/li>\n
                  • Lambda \u8868\u8fbe\u5f0f\uff1a<\/strong> \u5728 Bank<\/code> \u7c7b\u4e2d\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u91cd\u5199 getBalance<\/code> \u65b9\u6cd5\uff0c\u4f20\u5165 accountId<\/code> \u53c2\u6570\u3002<\/li>\n<\/ul>\n
                    \u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u7279\u5b9a\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u548c\u6743\u8861\u3002<\/p>\n
                    \u4eca\u5929\u5173\u4e8e\u300aJava \u51fd\u6570\u91cd\u7528\u7684\u4e0d\u540c\u65b9\u6cd5\u6bd4\u8f83\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,\u51fd\u6570\u91cd\u7528\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
                    Java \u51fd\u6570\u91cd\u7528\u7684\u4e0d\u540c\u65b9\u6cd5\u6bd4\u8f83...<\/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-202620","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202620","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=202620"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202620\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}