{"id":202644,"date":"2025-05-22T10:21:39","date_gmt":"2025-05-22T02:21:39","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202644\/"},"modified":"2025-05-22T10:21:39","modified_gmt":"2025-05-22T02:21:39","slug":"java-%e9%87%8d%e8%bd%bd%e6%96%b9%e6%b3%95%e4%b8%ad%e7%9a%84%e8%ae%bf%e9%97%ae%e6%8e%a7%e5%88%b6%e7%ac%a6%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202644\/","title":{"rendered":"Java \u91cd\u8f7d\u65b9\u6cd5\u4e2d\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u4f5c\u7528"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java \u91cd\u8f7d\u65b9\u6cd5\u4e2d\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u4f5c\u7528<\/h1>\n<p>\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava \u91cd\u8f7d\u65b9\u6cd5\u4e2d\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u4f5c\u7528\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p>Java\u91cd\u8f7d\u65b9\u6cd5\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u5728\u51b3\u5b9a\u5b50\u7c7b\u548c\u5916\u90e8\u7c7b\u5982\u4f55\u8bbf\u95ee\u7236\u7c7b\u4e2d\u7684\u65b9\u6cd5\u65b9\u9762\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u9650\u5236\u8bbf\u95ee\u3001\u63a7\u5236\u53ef\u89c1\u6027\u548c\u786e\u4fdd\u5b89\u5168\u6027\u3002\u8bbf\u95ee\u63a7\u5236\u7b26\u7c7b\u578b\u5305\u62ecpublic\uff08\u4efb\u4f55\u5730\u65b9\u8bbf\u95ee\uff09\u3001protected\uff08\u5b50\u7c7b\u548c\u540c\u4e00\u5305\u8bbf\u95ee\uff09\u3001default\uff08\u540c\u4e00\u5305\u8bbf\u95ee\uff09\u548cprivate\uff08\u4ec5\u7c7b\u5185\u8bbf\u95ee\uff09\u3002\u5728\u91cd\u8f7d\u65b9\u6cd5\u7684\u60c5\u51b5\u4e0b\uff0c\u5b50\u7c7b\u53ef\u4ee5\u91cd\u5199\u7236\u7c7b\u7684\u516c\u5171\u548c\u53d7\u4fdd\u62a4\u65b9\u6cd5\uff0c\u4f46\u4e0d\u80fd\u91cd\u5199\u79c1\u6709\u65b9\u6cd5\u3002\u8bbf\u95ee\u63a7\u5236\u7b26\u786e\u4fdd\u4ee3\u7801\u5b89\u5168\uff0c\u9632\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729927304671c98881835a.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java\u91cd\u8f7d\u65b9\u6cd5\u4e2d\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u4f5c\u7528<\/strong><\/p>\n<p>\u5728Java\u4e2d\uff0c\u91cd\u8f7d\u5141\u8bb8\u521b\u5efa\u5177\u6709\u76f8\u540c\u540d\u79f0\u4f46\u53c2\u6570\u4e0d\u540c\u7684\u591a\u4e2a\u65b9\u6cd5\u3002\u8bbf\u95ee\u63a7\u5236\u7b26\u51b3\u5b9a\u5b50\u7c7b\u6216\u5176\u4ed6\u7c7b\u5982\u4f55\u8bbf\u95ee\u8fd9\u4e9b\u91cd\u8f7d\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u4f5c\u7528\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u9650\u5236\u8bbf\u95ee\uff1a<\/strong> \u8bbf\u95ee\u63a7\u5236\u7b26\u9650\u5236\u5b50\u7c7b\u548c\u5916\u90e8\u7c7b\u8bbf\u95ee\u7236\u7c7b\u4e2d\u7684\u65b9\u6cd5\u3002<\/li>\n<li><strong>\u63a7\u5236\u53ef\u89c1\u6027\uff1a<\/strong> \u5b83\u4eec\u6307\u5b9a\u53ef\u4ee5\u5728\u54ea\u91cc\u8bbf\u95ee\u65b9\u6cd5\uff08\u4f8b\u5982\uff0c\u4ec5\u5728\u5b50\u7c7b\u5185\u6216\u5728\u4efb\u4f55\u7c7b\u4e2d\uff09\u3002<\/li>\n<li><strong>\u786e\u4fdd\u5b89\u5168\uff1a<\/strong> \u8bbf\u95ee\u63a7\u5236\u7b26\u901a\u8fc7\u963b\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u6765\u5e2e\u52a9\u786e\u4fdd\u4ee3\u7801\u7684\u5b89\u5168\u6027\u3002<\/li>\n<\/ul>\n<p><strong>\u8bbf\u95ee\u63a7\u5236\u7b26\u7c7b\u578b\uff1a<\/strong><\/p>\n<ul>\n<li><strong>public\uff1a<\/strong> \u65b9\u6cd5\u53ef\u4ee5\u5728\u4efb\u4f55\u5730\u65b9\u8bbf\u95ee\u3002<\/li>\n<li><strong>protected\uff1a<\/strong> \u65b9\u6cd5\u53ef\u4ee5\u5728\u5b50\u7c7b\u548c\u540c\u4e00\u5305\u4e2d\u8bbf\u95ee\u3002<\/li>\n<li><strong>default\uff08\u6216\u5305\u8bbf\u95ee\u6743\u9650\uff09\uff1a<\/strong> \u65b9\u6cd5\u53ea\u80fd\u5728\u540c\u4e00\u5305\u4e2d\u8bbf\u95ee\u3002<\/li>\n<li><strong>private\uff1a<\/strong> \u65b9\u6cd5\u53ea\u80fd\u5728\u58f0\u660e\u5b83\u4eec\u7684\u7c7b\u4e2d\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\uff0c\u5176\u4e2dAnimal\u7c7b\u5177\u6709\u4e24\u4e2a\u91cd\u8f7d\u7684makeSound\u65b9\u6cd5\uff1a<\/p>\n<pre>class Animal {\n\n    public void makeSound() {\n        System.out.println(\"Generic animal sound\");\n    }\n\n    protected void makeSound(int frequency) {\n        System.out.println(\"Animal sound with frequency: \" + frequency);\n    }\n}\n\nclass Dog extends Animal {\n\n    @Override\n    public void makeSound() {\n        System.out.println(\"Woof!\");\n    }\n\n    @Override\n    protected void makeSound(int frequency) {\n        System.out.println(\"Dog bark with frequency: \" + frequency);\n    }\n}<\/pre>\n<p>\u5728Dog\u7c7b\u4e2d\uff0c<code>makeSound<\/code>\u65b9\u6cd5\u88ab\u91cd\u5199\uff0c\u5b83\u8986\u76d6\u4e86Animal\u7c7b\u4e2d\u7684\u516c\u5171\u548c\u53d7\u4fdd\u62a4\u7684\u65b9\u6cd5\u3002\u7531\u4e8eDog\u7c7b\u662fAnimal\u7c7b\u7684\u5b50\u7c7b\uff0c\u56e0\u6b64\u5b83\u53ef\u4ee5\u8bbf\u95eeprotected\u65b9\u6cd5<code>makeSound(int frequency)<\/code>\uff0c\u5e76\u63d0\u4f9b\u5176\u81ea\u5df1\u7684\u5b9e\u73b0\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u5b50\u7c7b\u4e0d\u80fd\u91cd\u5199\u7236\u7c7b\u7684private\u65b9\u6cd5\u3002<\/li>\n<li>\u5982\u679c\u5b50\u7c7b\u60f3\u8981\u66f4\u4e25\u683c\u5730\u9650\u5236\u8bbf\u95ee\uff0c\u5b83\u53ef\u4ee5\u5c06\u7236\u7c7b\u65b9\u6cd5\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u66f4\u6539\u4e3a\u66f4\u4e25\u683c\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\uff08\u4f8b\u5982\uff0c\u5c06public\u66f4\u6539\u4e3aprotected\uff09\u3002<\/li>\n<li>\u5982\u679c\u5b50\u7c7b\u60f3\u8981\u6388\u4e88\u66f4\u591a\u6743\u9650\uff0c\u5b83\u4e0d\u80fd\u5c06\u7236\u7c7b\u65b9\u6cd5\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u66f4\u6539\u4e3a\u66f4\u5bbd\u677e\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u3002<\/li>\n<\/ul>\n<p>\u6587\u4e2d\u5173\u4e8ejava,\u91cd\u8f7d\u65b9\u6cd5\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aJava \u91cd\u8f7d\u65b9\u6cd5\u4e2d\u7684\u8bbf\u95ee\u63a7\u5236\u7b26\u4f5c\u7528\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u91cd\u8f7d\u65b9\u6cd5\u4e2d\u7684\u8bbf\u95ee\u63a7\u5236\u7b26&#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-202644","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202644","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=202644"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202644\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}