{"id":202536,"date":"2025-05-22T10:05:10","date_gmt":"2025-05-22T02:05:10","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202536\/"},"modified":"2025-05-22T10:05:10","modified_gmt":"2025-05-22T02:05:10","slug":"java-%e4%b8%ad%e5%87%bd%e6%95%b0%e9%87%8d%e5%86%99%e7%9a%84%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202536\/","title":{"rendered":"Java \u4e2d\u51fd\u6570\u91cd\u5199\u7684\u5b9e\u73b0\u539f\u7406"},"content":{"rendered":"

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

Java \u4e2d\u51fd\u6570\u91cd\u5199\u7684\u5b9e\u73b0\u539f\u7406<\/h1>\n

\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u300aJava \u4e2d\u51fd\u6570\u91cd\u5199\u7684\u5b9e\u73b0\u539f\u7406\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

Java\u4e2d\u7684\u51fd\u6570\u91cd\u5199\u901a\u8fc7\u65b9\u6cd5\u8986\u76d6\u673a\u5236\u5b9e\u73b0\uff0c\u5141\u8bb8\u5b50\u7c7b\u8986\u76d6\u7236\u7c7b\u4e2d\u540c\u540d\u540c\u53c2\u7684\u65b9\u6cd5\u3002\u5b50\u7c7b\u65b9\u6cd5\u6267\u884c\u65f6\uff0c\u4f18\u5148\u8c03\u7528\u5b50\u7c7b\u4e2d\u88ab\u91cd\u5199\u7684\u7248\u672c\uff0c\u5b9e\u73b0\u4ee3\u7801\u91cd\u7528\u548c\u591a\u6001\u6027\u3002\u6ce8\u610f\u4e8b\u9879\u5305\u62ec\uff1a\u8bbf\u95ee\u6743\u9650\u3001\u53c2\u6570\u5217\u8868\u548c\u5f02\u5e38\u629b\u51fa\u4e0d\u80fd\u6539\u53d8\uff0c\u4e14\u5b50\u7c7b\u672a\u91cd\u5199\u5219\u9ed8\u8ba4\u7ee7\u627f\u7236\u7c7b\u65b9\u6cd5\u3002<\/p>\n

<\/p>\n

Java \u4e2d\u51fd\u6570\u91cd\u5199\u7684\u5b9e\u73b0\u539f\u7406<\/h2>\n

\u51fd\u6570\u91cd\u5199<\/strong>\u662f\u6307\u5728\u5b50\u7c7b\u4e2d\u5b9a\u4e49\u4e0e\u7236\u7c7b\u4e2d\u540c\u540d\u3001\u540c\u53c2\u6570\u5217\u8868\u7684\u65b9\u6cd5\u3002\u5f53\u8c03\u7528\u5b50\u7c7b\u7684\u65b9\u6cd5\u65f6\uff0c\u5982\u679c\u5b58\u5728\u4e0e\u4e4b\u5339\u914d\u7684\u7236\u7c7b\u65b9\u6cd5\uff0c\u5219\u6267\u884c\u7236\u7c7b\u65b9\u6cd5\u3002<\/p>\n

\u5b9e\u73b0\u539f\u7406<\/h3>\n

Java \u4e2d\u7684\u51fd\u6570\u91cd\u5199\u662f\u901a\u8fc7 \u65b9\u6cd5\u8986\u76d6\uff08Method Overriding\uff09<\/strong> \u673a\u5236\u5b9e\u73b0\u7684\u3002\u5f53\u7f16\u8bd1\u5668\u9047\u5230\u5b50\u7c7b\u4e2d\u88ab\u91cd\u5199\u7684\u65b9\u6cd5\u65f6\uff0c\u5b83\u4f1a\u68c0\u67e5\u7236\u7c7b\u4e2d\u662f\u5426\u5b58\u5728\u540c\u540d\u540c\u53c2\u7684\u65b9\u6cd5\u3002\u5982\u679c\u5b58\u5728\uff0c\u5219\u5b50\u7c7b\u7684\u65b9\u6cd5\u8986\u76d6\u7236\u7c7b\u7684\u65b9\u6cd5\uff0c\u6210\u4e3a\u65b0\u7684\u65b9\u6cd5\u5b9e\u73b0\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b<\/h3>\n

\u8003\u8651\u4ee5\u4e0b\u7236\u7c7b\u548c\u5b50\u7c7b\uff1a<\/p>\n

class Animal {\n    public void makeSound() {\n        System.out.println(\"Animal sound!\");\n    }\n}\n\nclass Dog extends Animal {\n    @Override\n    public void makeSound() {\n        System.out.println(\"Woof!\");\n    }\n}<\/pre>\n
\u5f53\u521b\u5efa Dog<\/code> \u5bf9\u8c61\u65f6\uff0c\u5b83\u7ee7\u627f\u4e86 Animal<\/code> \u4e2d\u7684 makeSound()<\/code> \u65b9\u6cd5\u3002\u4f46\u662f\uff0c\u5f53\u8c03\u7528 Dog<\/code> \u5bf9\u8c61\u7684 makeSound()<\/code> \u65b9\u6cd5\u65f6\uff0c\u5c06\u6267\u884c\u5b50\u7c7b\u4e2d\u88ab\u91cd\u5199\u7684\u65b9\u6cd5\uff0c\u8f93\u51fa “Woof!”\u3002<\/p>\n
\u6ce8\u610f\u4e8b\u9879<\/h3>\n
    \n
  • \u91cd\u5199\u7684\u65b9\u6cd5\u4e0d\u80fd\u6539\u53d8\u7236\u7c7b\u65b9\u6cd5\u7684\u8bbf\u95ee\u6743\u9650\uff08public\u3001protected\u3001\u9ed8\u8ba4\uff09\u3002<\/li>\n
  • \u91cd\u5199\u7684\u65b9\u6cd5\u4e0d\u80fd\u6539\u53d8\u53c2\u6570\u5217\u8868\u6216\u629b\u51fa\u4e0d\u540c\u7684\u5f02\u5e38\u3002<\/li>\n
  • \u5982\u679c\u5b50\u7c7b\u672a\u91cd\u5199\u7236\u7c7b\u65b9\u6cd5\uff0c\u5219\u9ed8\u8ba4\u7ee7\u627f\u7236\u7c7b\u65b9\u6cd5\u3002<\/li>\n
  • \u53ef\u4ee5\u5728\u4efb\u4f55\u7ee7\u627f\u5c42\u7ea7\u4e2d\u8fdb\u884c\u51fd\u6570\u91cd\u5199\u3002<\/li>\n<\/ul>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    class Shape {\n    public void draw() {\n        System.out.println(\"Drawing a shape\");\n    }\n}\n\nclass Circle extends Shape {\n    @Override\n    public void draw() {\n        System.out.println(\"Drawing a circle\");\n    }\n\n    public static void main(String[] args) {\n        Shape shape = new Circle();\n        shape.draw(); \/\/ \u8f93\u51fa \"Drawing a circle\"\n    }\n}<\/pre>\n
    \u901a\u8fc7\u51fd\u6570\u91cd\u5199\uff0c\u5b50\u7c7b\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u8981\u5b9a\u5236\u7236\u7c7b\u65b9\u6cd5\u7684\u884c\u4e3a\uff0c\u4ece\u800c\u5b9e\u73b0\u4ee3\u7801\u91cd\u7528\u548c\u591a\u6001\u6027\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java \u4e2d\u51fd\u6570\u91cd\u5199\u7684\u5b9e\u73b0\u539f\u7406 ...<\/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-202536","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202536","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=202536"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202536\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}