{"id":347,"date":"2025-09-29T11:00:15","date_gmt":"2025-09-29T03:00:15","guid":{"rendered":"http:\/\/43.139.99.192\/?p=347"},"modified":"2025-09-29T11:00:16","modified_gmt":"2025-09-29T03:00:16","slug":"%e6%b5%85%e5%ad%a6%e3%80%90java%e3%80%91%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"http:\/\/43.139.99.192\/index.php\/2025\/09\/29\/%e6%b5%85%e5%ad%a6%e3%80%90java%e3%80%91%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f\/","title":{"rendered":"\u6d45\u5b66\u3010Java\u3011\u8bbe\u8ba1\u6a21\u5f0f"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u7528\u4e00\u79cd\u201c\u4eba\u95f4\u6e05\u9192\u201d\u7684\u65b9\u5f0f\u6765\u804a\u804aJava\u8bbe\u8ba1\u6a21\u5f0f\u3002\u4f60\u4f1a\u53d1\u73b0\uff0c\u5b83\u4eec\u4e0d\u662f\u9ad8\u6df1\u83ab\u6d4b\u7684\u7406\u8bba\uff0c\u800c\u662f\u524d\u8f88\u7a0b\u5e8f\u5458\u4eec\u603b\u7ed3\u51fa\u6765\u7684\u201c\u6700\u4f73\u62cd\u6863\u79d8\u7c4d\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u7ae0\uff1a\u8bbe\u8ba1\u6a21\u5f0f\u662f\u5565\uff1f\u4e3a\u5565\u8981\u5b66\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u60f3\u8c61\u4e00\u4e0b\uff0c\u4f60\u8981\u88c5\u4fee\u623f\u5b50\u3002 \u4f60\u4e0d\u4f1a\u6bcf\u6b21\u88c5\u4fee\u90fd\u4ece\u201c\u5982\u4f55\u5236\u9020\u4e00\u9897\u9489\u5b50\u201d\u5f00\u59cb\u5427\uff1f\u4f60\u4f1a\u76f4\u63a5\u53bb\u5b9c\u5bb6\u6216\u8005\u5efa\u6750\u5e02\u573a\uff0c\u9009\u62e9\u73b0\u6210\u7684\u3001\u8bbe\u8ba1\u597d\u7684\u200b<strong>\u200b\u5bb6\u5177\u6a21\u677f\u200b<\/strong>\u200b\uff0c\u6bd4\u5982\u4e00\u4e2a\u201c\u6bd4\u5229\u201d\u4e66\u67dc\u6216\u4e00\u4e2a\u201c\u9a6c\u5c14\u59c6\u201d\u5e8a\u67b6\u3002\u8fd9\u4e9b\u6a21\u677f\u662f\u7ecf\u8fc7\u65e0\u6570\u5bb6\u5ead\u9a8c\u8bc1\u7684\uff0c\u77e5\u9053\u600e\u4e48\u8bbe\u8ba1\u6700\u7a33\u56fa\u3001\u6700\u5b9e\u7528\u3001\u6700\u7f8e\u89c2\u3002 \u200b<strong>\u200b\u8bbe\u8ba1\u6a21\u5f0f\u5c31\u662f\u8f6f\u4ef6\u4e16\u754c\u91cc\u7684\u201c\u5bb6\u5177\u6a21\u677f\u201d\u200b<\/strong>\u200b\u3002 \u5b83\u4eec\u4e0d\u662f\u73b0\u6210\u7684\u4ee3\u7801\u5e93\uff0c\u800c\u662f\u4e00\u5957\u200b<strong>\u200b\u88ab\u53cd\u590d\u9a8c\u8bc1\u7684\u3001\u9488\u5bf9\u7279\u5b9a\u95ee\u9898\u7684\u4f18\u79c0\u4ee3\u7801\u8bbe\u8ba1\u7ecf\u9a8c\u603b\u7ed3\u200b<\/strong>\u200b\u3002 \u200b<strong>\u200b\u4e3a\u4ec0\u4e48\u8981\u5b66\uff1f\u200b<\/strong>\u200b<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u200b<strong>\u200b\u907f\u514d\u91cd\u590d\u9020\u8f6e\u5b50\u200b<\/strong>\u200b\uff1a\u9047\u5230\u7ecf\u5178\u95ee\u9898\uff0c\u76f4\u63a5\u7528\u6210\u719f\u65b9\u6848\uff0c\u7701\u65f6\u7701\u529b\u3002<\/li>\n\n\n\n<li>\u200b<strong>\u200b\u4ee3\u7801\u66f4\u4f18\u96c5\u3001\u66f4\u6613\u7ef4\u62a4\u200b<\/strong>\u200b\uff1a\u7528\u4e0a\u8bbe\u8ba1\u6a21\u5f0f\u7684\u4ee3\u7801\uff0c\u5c31\u50cf\u7528\u4e86\u5b9c\u5bb6\u6a21\u5757\u5316\u5bb6\u5177\u7684\u5bb6\uff0c\u7ed3\u6784\u6e05\u6670\uff0c\u540e\u671f\u8981\u6362\u4e2a\u201c\u6c99\u53d1\u201d\uff08\u4fee\u6539\u529f\u80fd\uff09\u5f88\u5bb9\u6613\uff0c\u4e0d\u4f1a\u7275\u4e00\u53d1\u52a8\u5168\u8eab\u3002<\/li>\n\n\n\n<li>\u200b<strong>\u200b\u4fbf\u4e8e\u6c9f\u901a\u200b<\/strong>\u200b\uff1a\u4f60\u53ea\u8981\u8bf4\u201c\u8fd9\u91cc\u6211\u4eec\u7528\u4e86\u4e2a\u2018\u89c2\u5bdf\u8005\u6a21\u5f0f\u2019\u201d\uff0c\u6240\u6709\u61c2\u884c\u7684\u540c\u4e8b\u7acb\u523b\u5c31\u80fd\u660e\u767d\u4f60\u7684\u8bbe\u8ba1\u610f\u56fe\uff0c\u6c9f\u901a\u6210\u672c\u6781\u4f4e\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u7ae0\uff1a\u4e09\u5927\u6d3e\u522b\uff0c\u5404\u6709\u795e\u901a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bbe\u8ba1\u6a21\u5f0f\u7ecf\u5178\u8457\u4f5c\u300a\u8bbe\u8ba1\u6a21\u5f0f\u300b\u4e2d\u603b\u7ed3\u4e8623\u79cd\u6a21\u5f0f\uff0c\u5206\u4e3a\u4e09\u5927\u7c7b\uff0c\u6211\u4eec\u7528\u516c\u53f8\u90e8\u95e8\u6765\u7c7b\u6bd4\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7c7b\u578b<\/th><th>\u6838\u5fc3\u5173\u6ce8\u70b9<\/th><th>\u597d\u6bd4\u516c\u53f8\u91cc\u7684&#8230;<\/th><th>\u7ecf\u5178\u6a21\u5f0f\u4e3e\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>\u200b<strong>\u200b\u521b\u5efa\u578b\u6a21\u5f0f\u200b<\/strong>\u200b<\/td><td>\u200b<strong>\u200b\u89e3\u51b3\u201c\u5bf9\u8c61\u521b\u5efa\u201d\u7684\u96be\u9898\u200b<\/strong>\u200b\uff0c\u8ba9\u521b\u5efa\u5bf9\u8c61\u66f4\u7075\u6d3b<\/td><td>\u200b<strong>\u200bHR\u62db\u8058\u90e8\u95e8\u200b<\/strong>\u200b\uff1a\u8d1f\u8d23\u7528\u4e0d\u540c\u65b9\u5f0f\uff08\u6821\u62db\u3001\u793e\u62db\u3001\u730e\u5934\uff09\u201c\u521b\u5efa\u201d\u5458\u5de5\u5bf9\u8c61<\/td><td>\u5355\u4f8b\u3001\u5de5\u5382\u3001\u5efa\u9020\u8005<\/td><\/tr><tr><td>\u200b<strong>\u200b\u7ed3\u6784\u578b\u6a21\u5f0f\u200b<\/strong>\u200b<\/td><td>\u200b<strong>\u200b\u89e3\u51b3\u201c\u7c7b\u4e0e\u5bf9\u8c61\u7ec4\u5408\u201d\u7684\u96be\u9898\u200b<\/strong>\u200b\uff0c\u642d\u5efa\u6e05\u6670\u7a33\u5b9a\u7684\u7ed3\u6784<\/td><td>\u200b<strong>\u200b\u67b6\u6784\u90e8\/\u884c\u653f\u90e8\u200b<\/strong>\u200b\uff1a\u8bbe\u8ba1\u90e8\u95e8\u67b6\u6784\uff08\u7ec4\u5408\uff09\uff0c\u63d0\u4f9b\u7edf\u4e00\u63a5\u53e3\uff08\u9002\u914d\uff09<\/td><td>\u9002\u914d\u5668\u3001\u88c5\u9970\u8005\u3001\u4ee3\u7406<\/td><\/tr><tr><td>\u200b<strong>\u200b\u884c\u4e3a\u578b\u6a21\u5f0f\u200b<\/strong>\u200b<\/td><td>\u200b<strong>\u200b\u89e3\u51b3\u201c\u5bf9\u8c61\u95f4\u901a\u4fe1\u201d\u7684\u96be\u9898\u200b<\/strong>\u200b\uff0c\u8ba9\u5bf9\u8c61\u5404\u53f8\u5176\u804c\u53c8\u9ad8\u6548\u534f\u4f5c<\/td><td>\u200b<strong>\u200b\u5de5\u4f5c\u6d41\u4e0e\u6c9f\u901a\u673a\u5236\u200b<\/strong>\u200b\uff1a\u5982\u4f55\u5206\u914d\u4efb\u52a1\uff08\u8d23\u4efb\u94fe\uff09\uff0c\u5982\u4f55\u53d1\u5e03\u901a\u77e5\uff08\u89c2\u5bdf\u8005\uff09<\/td><td>\u89c2\u5bdf\u8005\u3001\u7b56\u7565\u3001\u8d23\u4efb\u94fe<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u7ae0\uff1a\u5feb\u901f\u638c\u63e1\u51e0\u4e2a\u6700\u5e38\u7528\u7684\u6a21\u5f0f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u6311\u51e0\u4e2a\u6700\u5b9e\u7528\u3001\u6700\u80fd\u4f53\u73b0\u601d\u60f3\u7684\u6a21\u5f0f\u6765\u201c\u5c1d\u5c1d\u9c9c\u201d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6a21\u5f0f\u4e00\uff1a\u5355\u4f8b\u6a21\u5f0f \u2014\u2014 \u7687\u5e1d\u7684\u201c\u72ec\u4e00\u65e0\u4e8c\u201d<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u200b\u751f\u6d3b\u573a\u666f\u200b<\/strong>\u200b\uff1a\u4e00\u4e2a\u56fd\u5bb6\u53ea\u80fd\u6709\u4e00\u4e2a\u7687\u5e1d\uff0c\u4e00\u4e2a\u516c\u53f8\u53ea\u80fd\u6709\u4e00\u4e2aCEO\u3002 \u200b<strong>\u200b\u4ee3\u7801\u95ee\u9898\u200b<\/strong>\u200b\uff1a\u6709\u4e9b\u5bf9\u8c61\uff0c\u6bd4\u5982\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u3001\u914d\u7f6e\u6587\u4ef6\u7ba1\u7406\u5668\u3001\u65e5\u5fd7\u5de5\u5177\uff0c\u6574\u4e2a\u7a0b\u5e8f\u91cc\u53ea\u9700\u8981\u4e00\u4e2a\u5b9e\u4f8b\u3002\u641e\u51fa\u591a\u4e2a\u5b9e\u4f8b\u65e2\u6d6a\u8d39\u8d44\u6e90\uff0c\u53c8\u53ef\u80fd\u5bfc\u81f4\u72b6\u6001\u6df7\u4e71\u3002 \u200b<strong>\u200b\u5355\u4f8b\u6a21\u5f0f\u7684\u505a\u6cd5\u200b<\/strong>\u200b\uff1a\u200b<strong>\u200b\u4fdd\u8bc1\u4e00\u4e2a\u7c7b\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5168\u5c40\u8bbf\u95ee\u70b9\u3002\u200b<\/strong>\u200b \u200b<strong>\u200bJava\u4ee3\u7801\uff08\u997f\u6c49\u5f0f\uff0c\u6700\u7b80\u5355\u7684\u4e00\u79cd\uff09\uff1a\u200b<\/strong>\u200b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Emperor {\n    \/\/ 1. \u79c1\u6709\u9759\u6001\u5b9e\u4f8b\uff0c\u7c7b\u52a0\u8f7d\u65f6\u5c31\u521b\u5efa\u597d\uff08\u6240\u4ee5\u53eb\u201c\u997f\u6c49\u201d\uff09\n    private static final Emperor instance = new Emperor();\n\n    \/\/ 2. \u79c1\u6709\u6784\u9020\u65b9\u6cd5\uff0c\u5835\u6b7b\u5916\u754c\u7528`new`\u521b\u5efa\u5b9e\u4f8b\u7684\u8def\uff01\n    private Emperor() {\n        System.out.println(\"\u6211\u662f\u552f\u4e00\u7684\u7687\u5e1d\uff01\");\n    }\n\n    \/\/ 3. \u516c\u5171\u7684\u9759\u6001\u65b9\u6cd5\uff0c\u4f9b\u5916\u754c\u83b7\u53d6\u8fd9\u4e2a\u552f\u4e00\u5b9e\u4f8b\n    public static Emperor getInstance() {\n        return instance;\n    }\n\n    public void rule() {\n        System.out.println(\"\u6715\u5373\u5929\u4e0b\uff01\");\n    }\n}\n\n\/\/ \u4f7f\u7528\u65b9\u5f0f\npublic class Kingdom {\n    public static void main(String&#91;] args) {\n        \/\/ Emperor e = new Emperor(); \/\/ \u9519\u8bef\uff01\u6784\u9020\u65b9\u6cd5\u662f\u79c1\u6709\u7684\u3002\n\n        \/\/ \u6b63\u786e\u65b9\u5f0f\uff1a\u901a\u8fc7getInstance\u83b7\u53d6\u552f\u4e00\u5b9e\u4f8b\n        Emperor emperor1 = Emperor.getInstance();\n        Emperor emperor2 = Emperor.getInstance();\n\n        emperor1.rule(); \/\/ \u8f93\u51fa\uff1a\u6715\u5373\u5929\u4e0b\uff01\n\n        \/\/ \u9a8c\u8bc1\u662f\u5426\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\n        System.out.println(emperor1 == emperor2); \/\/ \u8f93\u51fa\uff1atrue\uff0c\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\uff01\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u200b\u6838\u5fc3\u601d\u60f3\u200b<\/strong>\u200b\uff1a\u200b<strong>\u200b\u628a\u6784\u9020\u5668\u201c\u5173\u8d77\u6765\u201d\uff08\u79c1\u6709\u5316\uff09\uff0c\u53ea\u7559\u4e00\u4e2a\u201c\u95e8\u201d\uff08getInstance\u65b9\u6cd5\uff09\u83b7\u53d6\u552f\u4e00\u5bf9\u8c61\u3002\u200b<\/strong>\u200b<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">\u6a21\u5f0f\u4e8c\uff1a\u5de5\u5382\u6a21\u5f0f \u2014\u2014 \u4e13\u4e1a\u7684\u201c\u4ee3\u5de5\u5382\u201d<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u200b\u751f\u6d3b\u573a\u666f\u200b<\/strong>\u200b\uff1a\u4f60\u60f3\u4e70\u4e00\u8f86\u8f66\u3002\u4f60\u4e0d\u4f1a\u81ea\u5df1\u53bb\u70bc\u94a2\u3001\u9020\u8f6e\u80ce\u3001\u7ec4\u88c5\uff0c\u4f60\u4f1a\u76f4\u63a5\u53bb\u201c\u5b9d\u9a6c4S\u5e97\u201d\u6216\u201c\u5954\u9a704S\u5e97\u201d\u544a\u8bc9\u9500\u552e\uff1a\u201c\u6211\u8981\u4e00\u8f86SUV\u201d\u30024S\u5e97\u4f1a\u5e2e\u4f60\u628a\u8f66\u9020\u597d\u3001\u914d\u7f6e\u597d\uff0c\u4f60\u76f4\u63a5\u63d0\u8f66\u5c31\u884c\u3002 \u200b<strong>\u200b\u4ee3\u7801\u95ee\u9898\u200b<\/strong>\u200b\uff1a\u5728\u4ee3\u7801\u4e2d\uff0c\u5f53\u4f60\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u65f6\uff0c\u5982\u679c\u521b\u5efa\u8fc7\u7a0b\u5f88\u590d\u6742\uff08\u6bd4\u5982\u4f9d\u8d56\u5f88\u591a\u914d\u7f6e\uff09\uff0c\u6216\u8005\u4f60\u5e0c\u671b\u521b\u5efa\u903b\u8f91\u4e0e\u4f7f\u7528\u903b\u8f91\u5206\u79bb\uff08\u4f7f\u7528\u8005\u4e0d\u5173\u5fc3\u5bf9\u8c61\u600e\u4e48\u6765\u7684\uff09\uff0c\u5c31\u53ef\u4ee5\u7528\u5de5\u5382\u6a21\u5f0f\u3002 \u200b<strong>\u200b\u5de5\u5382\u6a21\u5f0f\u7684\u505a\u6cd5\u200b<\/strong>\u200b\uff1a\u200b<strong>\u200b\u5b9a\u4e49\u4e00\u4e2a\u521b\u5efa\u5bf9\u8c61\u7684\u63a5\u53e3\uff0c\u4f46\u8ba9\u5b50\u7c7b\u51b3\u5b9a\u5b9e\u4f8b\u5316\u54ea\u4e00\u4e2a\u7c7b\u3002\u5de5\u5382\u65b9\u6cd5\u4f7f\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u5316\u5ef6\u8fdf\u5230\u5176\u5b50\u7c7b\u3002\u200b<\/strong>\u200b \u200b<strong>\u200bJava\u4ee3\u7801\uff1a\u200b<\/strong>\u200b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ 1. \u4ea7\u54c1\u63a5\u53e3\uff1a\u8f66\ninterface Car {\n    void drive();\n}\n\n\/\/ 2. \u5177\u4f53\u4ea7\u54c1\uff1a\u5b9d\u9a6c\u548c\u5954\u9a70\nclass BMW implements Car {\n    @Override\n    public void drive() {\n        System.out.println(\"\u5f00\u5b9d\u9a6c...\");\n    }\n}\n\nclass Benz implements Car {\n    @Override\n    public void drive() {\n        System.out.println(\"\u5f00\u5954\u9a70...\");\n    }\n}\n\n\/\/ 3. \u6838\u5fc3\uff1a\u5de5\u5382\u63a5\u53e3\ninterface CarFactory {\n    Car createCar(); \/\/ \u5de5\u5382\u7684\u6838\u5fc3\u804c\u8d23\uff1a\u9020\u8f66\n}\n\n\/\/ 4. \u5177\u4f53\u5de5\u5382\uff1a\u5b9d\u9a6c\u5de5\u5382\u548c\u5954\u9a70\u5de5\u5382\nclass BMWFactory implements CarFactory {\n    @Override\n    public Car createCar() {\n        \/\/ \u8fd9\u91cc\u53ef\u80fd\u6709\u5f88\u591a\u590d\u6742\u7684\u5236\u9020\u903b\u8f91\n        return new BMW();\n    }\n}\n\nclass BenzFactory implements CarFactory {\n    @Override\n    public Car createCar() {\n        return new Benz();\n    }\n}\n\n\/\/ \u4f7f\u7528\u65b9\u5f0f\uff1a\u5ba2\u6237\u4e70\u8f66\npublic class Customer {\n    public static void main(String&#91;] args) {\n        \/\/ \u8981\u53bb\u5b9d\u9a6c4S\u5e97\n        CarFactory factory = new BMWFactory();\n        Car myCar = factory.createCar(); \/\/ \u544a\u8bc94S\u5e97\uff1a\u7ed9\u6211\u9020\u4e00\u8f86\n        myCar.drive(); \/\/ \u8f93\u51fa\uff1a\u5f00\u5b9d\u9a6c...\n\n        \/\/ \u6362\u4e00\u5bb6\u5e97\n        factory = new BenzFactory();\n        myCar = factory.createCar();\n        myCar.drive(); \/\/ \u8f93\u51fa\uff1a\u5f00\u5954\u9a70...\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u200b\u6838\u5fc3\u601d\u60f3\u200b<\/strong>\u200b\uff1a\u200b<strong>\u200b\u5c06\u201c\u5bf9\u8c61\u521b\u5efa\u201d\u8fd9\u4e2a\u52a8\u4f5c\u62bd\u8c61\u51fa\u6765\uff0c\u4e0e\u201c\u5bf9\u8c61\u4f7f\u7528\u201d\u5206\u79bb\u5f00\u3002\u4f7f\u7528\u8005\u53ea\u9762\u5bf9\u62bd\u8c61\u63a5\u53e3\uff08Car\u548cCarFactory\uff09\uff0c\u4e0d\u5173\u5fc3\u5177\u4f53\u5b9e\u73b0\uff0c\u975e\u5e38\u7b26\u5408\u201c\u4f9d\u8d56\u5012\u7f6e\u201d\u539f\u5219\uff0c\u5927\u5927\u63d0\u5347\u4e86\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u3002\u200b<\/strong>\u200b<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">\u6a21\u5f0f\u4e09\uff1a\u89c2\u5bdf\u8005\u6a21\u5f0f \u2014\u2014 \u5fae\u4fe1\u516c\u4f17\u53f7\u7684\u201c\u8ba2\u9605-\u901a\u77e5\u201d\u673a\u5236<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u200b\u751f\u6d3b\u573a\u666f\u200b<\/strong>\u200b\uff1a\u4f60\u5173\u6ce8\u4e86\u4e00\u4e2a\u5fae\u4fe1\u516c\u4f17\u53f7\uff08\u6210\u4e3a\u89c2\u5bdf\u8005\uff09\u3002\u5f53\u516c\u4f17\u53f7\u53d1\u5e03\u65b0\u6587\u7ae0\u65f6\uff08\u88ab\u89c2\u5bdf\u8005\u72b6\u6001\u6539\u53d8\uff09\uff0c\u6240\u6709\u5173\u6ce8\u8005\u90fd\u4f1a\u6536\u5230\u63a8\u9001\u901a\u77e5\u3002 \u200b<strong>\u200b\u4ee3\u7801\u95ee\u9898\u200b<\/strong>\u200b\uff1a\u5f53\u4e00\u4e2a\u5bf9\u8c61\uff08\u76ee\u6807\u5bf9\u8c61\uff09\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u5982\u4f55\u81ea\u52a8\u901a\u77e5\u6240\u6709\u4f9d\u8d56\u5b83\u7684\u5bf9\u8c61\uff08\u89c2\u5bdf\u8005\u5bf9\u8c61\uff09\uff0c\u5e76\u4e14\u8fd9\u4e9b\u5bf9\u8c61\u4e4b\u95f4\u662f\u677e\u8026\u5408\u7684\uff1f \u200b<strong>\u200b\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u505a\u6cd5\u200b<\/strong>\u200b\uff1a\u200b<strong>\u200b\u5b9a\u4e49\u5bf9\u8c61\u95f4\u7684\u4e00\u79cd\u4e00\u5bf9\u591a\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u6240\u6709\u4f9d\u8d56\u4e8e\u5b83\u7684\u5bf9\u8c61\u90fd\u5f97\u5230\u901a\u77e5\u5e76\u88ab\u81ea\u52a8\u66f4\u65b0\u3002\u200b<\/strong>\u200b \u200b<strong>\u200bJava\u4ee3\u7801\uff08Java\u81ea\u8eab\u5c31\u63d0\u4f9b\u4e86<code>java.util.Observer<\/code>\u63a5\u53e3\uff0c\u4f46\u6211\u4eec\u8fd9\u91cc\u624b\u5199\u4e00\u4e2a\u66f4\u76f4\u89c2\uff09\uff1a\u200b<\/strong>\u200b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.ArrayList;\nimport java.util.List;\n\n\/\/ 1. \u88ab\u89c2\u5bdf\u8005\/\u4e3b\u9898 (Subject) - \u597d\u6bd4\u5fae\u4fe1\u516c\u4f17\u53f7\u5e73\u53f0\nclass WeChatOfficialAccount {\n    private String name;\n    private String latestArticle; \/\/ \u72b6\u6001\uff1a\u6700\u65b0\u6587\u7ae0\n    private List&lt;Follower&gt; followers = new ArrayList&lt;&gt;(); \/\/ \u7ef4\u62a4\u6240\u6709\u89c2\u5bdf\u8005\n\n    public WeChatOfficialAccount(String name) {\n        this.name = name;\n    }\n\n    \/\/ \u6838\u5fc3\u65b9\u6cd5\uff1a\u53d1\u5e03\u65b0\u6587\u7ae0\n    public void publishArticle(String articleTitle) {\n        this.latestArticle = articleTitle;\n        System.out.println(name + \" \u53d1\u5e03\u4e86\u65b0\u6587\u7ae0\uff1a\u300a\" + articleTitle + \"\u300b\");\n        notifyAllFollowers(); \/\/ \u72b6\u6001\u6539\u53d8\uff0c\u901a\u77e5\u6240\u6709\u89c2\u5bdf\u8005\uff01\n    }\n\n    \/\/ \u4f9b\u89c2\u5bdf\u8005\u8ba2\u9605\u548c\u53d6\u6d88\u8ba2\u9605\n    public void addFollower(Follower follower) {\n        followers.add(follower);\n    }\n    public void removeFollower(Follower follower) {\n        followers.remove(follower);\n    }\n\n    \/\/ \u901a\u77e5\u6240\u6709\u7684\u89c2\u5bdf\u8005\n    private void notifyAllFollowers() {\n        for (Follower follower : followers) {\n            follower.update(this.name, this.latestArticle); \/\/ \u8c03\u7528\u89c2\u5bdf\u8005\u7684\u66f4\u65b0\u65b9\u6cd5\n        }\n    }\n}\n\n\/\/ 2. \u89c2\u5bdf\u8005\u63a5\u53e3 (Observer) - \u5b9a\u4e49\u7c89\u4e1d\u5e94\u6709\u7684\u884c\u4e3a\ninterface Follower {\n    void update(String accountName, String articleTitle); \/\/ \u6536\u5230\u901a\u77e5\u540e\u66f4\u65b0\u81ea\u5df1\n}\n\n\/\/ 3. \u5177\u4f53\u89c2\u5bdf\u8005 (ConcreteObserver) - \u771f\u5b9e\u7684\u7c89\u4e1d\nclass User implements Follower {\n    private String userName;\n\n    public User(String userName) {\n        this.userName = userName;\n    }\n\n    @Override\n    public void update(String accountName, String articleTitle) {\n        \/\/ \u6bcf\u4e2a\u7c89\u4e1d\u6536\u5230\u901a\u77e5\u540e\u7684\u53cd\u5e94\n        System.out.println(\"\u3010\" + userName + \"\u3011\u6536\u5230\u901a\u77e5\uff1a\u516c\u4f17\u53f7\u3010\" + accountName + \"\u3011\u6709\u65b0\u6587\u7ae0\u300a\" + articleTitle + \"\u300b\u53ef\u9605\u8bfb\uff01\");\n    }\n}\n\n\/\/ \u4f7f\u7528\u65b9\u5f0f\npublic class WeChatWorld {\n    public static void main(String&#91;] args) {\n        \/\/ \u521b\u5efa\u516c\u4f17\u53f7\uff08\u88ab\u89c2\u5bdf\u8005\uff09\n        WeChatOfficialAccount account = new WeChatOfficialAccount(\"\u5168\u6808\u7f16\u7a0b\u5b9d\u5178\");\n\n        \/\/ \u521b\u5efa\u7528\u6237\uff08\u89c2\u5bdf\u8005\uff09\n        User userA = new User(\"\u5c0f\u660e\");\n        User userB = new User(\"\u5c0f\u7ea2\");\n\n        \/\/ \u7528\u6237\u5173\u6ce8\u516c\u4f17\u53f7\n        account.addFollower(userA);\n        account.addFollower(userB);\n\n        \/\/ \u516c\u4f17\u53f7\u53d1\u5e03\u6587\u7ae0 -&gt; \u81ea\u52a8\u901a\u77e5\u6240\u6709\u5173\u6ce8\u8005\n        account.publishArticle(\"\u8bbe\u8ba1\u6a21\u5f0f\u5176\u5b9e\u5f88\u7b80\u5355\");\n\n        System.out.println(\"---------------\");\n        \/\/ \u5c0f\u7ea2\u53d6\u5173\n        account.removeFollower(userB);\n        \/\/ \u518d\u53d1\u5e03\u6587\u7ae0\uff0c\u53ea\u6709\u5c0f\u660e\u80fd\u6536\u5230\n        account.publishArticle(\"Java\u5e76\u53d1\u7f16\u7a0b\u5b9e\u6218\");\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u200b<strong>\u200b\u6838\u5fc3\u601d\u60f3\u200b<\/strong>\u200b\uff1a\u200b<strong>\u200b\u89e3\u8026\uff01\u88ab\u89c2\u5bdf\u8005\u53ea\u8d1f\u8d23\u7ef4\u62a4\u4e00\u4e2a\u89c2\u5bdf\u8005\u5217\u8868\u5e76\u5728\u72b6\u6001\u6539\u53d8\u65f6\u901a\u77e5\uff0c\u5b83\u4e0d\u5173\u5fc3\u89c2\u5bdf\u8005\u5177\u4f53\u662f\u8c01\u3001\u505a\u4e86\u4ec0\u4e48\u3002\u89c2\u5bdf\u8005\u5219\u8d1f\u8d23\u5728\u6536\u5230\u901a\u77e5\u540e\u91c7\u53d6\u884c\u52a8\u3002\u53cc\u65b9\u901a\u8fc7\u63a5\u53e3\u8026\u5408\uff0c\u804c\u8d23\u6e05\u6670\u3002\u200b<\/strong>\u200b<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ed9\u4f60\u7684\u5b66\u4e60\u8def\u7ebf\u56fe<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u200b<strong>\u200b\u7406\u89e3\u601d\u60f3\uff0c\u800c\u975e\u80cc\u8bf5\u4ee3\u7801\u200b<\/strong>\u200b\uff1a\u6c38\u8fdc\u8bb0\u4f4f\u6bcf\u4e2a\u6a21\u5f0f\u8981\u89e3\u51b3\u4ec0\u4e48\u200b<strong>\u200b\u75db\u70b9\u200b<\/strong>\u200b\u3002\u5148\u95ee\u201c\u4e3a\u4ec0\u4e48\u201d\uff0c\u518d\u770b\u201c\u600e\u4e48\u505a\u201d\u3002<\/li>\n\n\n\n<li>\u200b<strong>\u200b\u4ece\u5e38\u7528\u6a21\u5f0f\u5f00\u59cb\u200b<\/strong>\u200b\uff1a\n<ul class=\"wp-block-list\">\n<li>\u200b<strong>\u200b\u521b\u5efa\u578b\u200b<\/strong>\u200b\uff1a\u91cd\u70b9\u638c\u63e1 \u200b<strong>\u200b\u5355\u4f8b\uff08Singleton\uff09\u200b<\/strong>\u200b\u3001\u200b<strong>\u200b\u5de5\u5382\u65b9\u6cd5\uff08Factory Method\uff09\u200b<\/strong>\u200b\u3002<\/li>\n\n\n\n<li>\u200b<strong>\u200b\u7ed3\u6784\u578b\u200b<\/strong>\u200b\uff1a\u91cd\u70b9\u638c\u63e1 \u200b<strong>\u200b\u9002\u914d\u5668\uff08Adapter\uff09\u200b<\/strong>\u200b\u3001\u200b<strong>\u200b\u88c5\u9970\u8005\uff08Decorator\uff09\u200b<\/strong>\u200b\u3002<\/li>\n\n\n\n<li>\u200b<strong>\u200b\u884c\u4e3a\u578b\u200b<\/strong>\u200b\uff1a\u91cd\u70b9\u638c\u63e1 \u200b<strong>\u200b\u89c2\u5bdf\u8005\uff08Observer\uff09\u200b<\/strong>\u200b\u3001\u200b<strong>\u200b\u7b56\u7565\uff08Strategy\uff09\u200b<\/strong>\u200b\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u200b<strong>\u200b\u7ed3\u5408\u9879\u76ee\u601d\u8003\u200b<\/strong>\u200b\uff1a\u5728\u770b\u4ee3\u7801\u6216\u81ea\u5df1\u5199\u4ee3\u7801\u65f6\uff0c\u6709\u610f\u8bc6\u5730\u60f3\uff1a\u201c\u8fd9\u91cc\u662f\u4e0d\u662f\u53ef\u4ee5\u7528\u67d0\u4e2a\u8bbe\u8ba1\u6a21\u5f0f\u6765\u4f18\u5316\uff1f\u201d<\/li>\n\n\n\n<li>\u200b<strong>\u200b\u4e0d\u8981\u8fc7\u5ea6\u8bbe\u8ba1\u200b<\/strong>\u200b\uff01\u8bbe\u8ba1\u6a21\u5f0f\u662f\u201c\u5229\u5668\u201d\uff0c\u4f46\u4e0d\u662f\u201c\u94f6\u5f39\u201d\u3002\u5982\u679c\u4e1a\u52a1\u903b\u8f91\u5f88\u7b80\u5355\uff0c\u76f4\u63a5<code>new<\/code>\u4e00\u4e2a\u5bf9\u8c61\u5c31\u5b8c\u4e8b\u4e86\uff0c\u975e\u8981\u7528\u4e0a\u5de5\u5382\u6a21\u5f0f\u53cd\u800c\u628a\u7b80\u5355\u95ee\u9898\u590d\u6742\u5316\u3002<\/li>\n<\/ol>\n\n\n\n<h3 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