{"id":1910,"date":"2026-03-23T21:41:22","date_gmt":"2026-03-23T21:41:22","guid":{"rendered":"https:\/\/www.tech-posts.com\/tw\/interfaces-vs-abstract-classes-clarified\/"},"modified":"2026-03-23T21:41:22","modified_gmt":"2026-03-23T21:41:22","slug":"interfaces-vs-abstract-classes-clarified","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/tw\/interfaces-vs-abstract-classes-clarified\/","title":{"rendered":"OOAD\u6307\u5357\uff1a\u4ecb\u9762\u8207\u62bd\u8c61\u985e\u5225\u7684\u91d0\u6e05"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Chibi-style infographic comparing interfaces and abstract classes in object-oriented programming: abstract class blueprint with shared state and single inheritance versus interface contract with behavior-only and multiple implementation, featuring cute programmer characters, visual comparison table, and decision flowchart for choosing the right abstraction mechanism\" decoding=\"async\" src=\"https:\/\/www.tech-posts.com\/wp-content\/uploads\/2026\/03\/interfaces-vs-abstract-classes-infographic-chibi-style.jpg\"\/><\/figure>\n<\/div>\n<p>\u5728\u8907\u96dc\u8edf\u9ad4\u7cfb\u7d71\u7684\u67b6\u69cb\u4e2d\uff0c\u6709\u6548\u7d44\u7e54\u7a0b\u5f0f\u78bc\u7684\u80fd\u529b\u6c7a\u5b9a\u4e86\u9577\u671f\u7684\u53ef\u7dad\u8b77\u6027\u3002\u7269\u4ef6\u5c0e\u5411\u5206\u6790\u8207\u8a2d\u8a08\u9ad8\u5ea6\u4f9d\u8cf4\u65bc\u80fd\u5b9a\u7fa9\u884c\u70ba\u8207\u72c0\u614b\uff0c\u537b\u4e0d\u66b4\u9732\u5167\u90e8\u5be6\u4f5c\u7d30\u7bc0\u7684\u6a5f\u5236\u3002\u70ba\u6b64\u76ee\u7684\uff0c\u5b58\u5728\u5169\u7a2e\u4e3b\u8981\u5de5\u5177\uff1a\u4ecb\u9762\u8207\u62bd\u8c61\u985e\u5225\u3002\u7406\u89e3\u9019\u5169\u8005\u7684\u5dee\u7570\uff0c\u5c0d\u65bc\u5efa\u7acb\u53ef\u64f4\u5c55\u3001\u7a69\u5065\u7684\u61c9\u7528\u7a0b\u5f0f\u81f3\u95dc\u91cd\u8981\u3002\u6df7\u6dc6\u9019\u5169\u7a2e\u69cb\u9020\u5e38\u5c0e\u81f4\u50f5\u5316\u7684\u5c64\u7d1a\u7d50\u69cb\u8207\u8106\u5f31\u7684\u7a0b\u5f0f\u78bc\u5eab\uff0c\u4f7f\u5176\u96e3\u4ee5\u8b8a\u66f4\u3002\u672c\u6587\u63a2\u8a0e\u9078\u64c7\u5176\u4e00\u7684\u7406\u8ad6\u57fa\u790e\u3001\u5be6\u969b\u61c9\u7528\u8207\u6230\u7565\u5f71\u97ff\u3002<\/p>\n<h2>\ud83e\udde0 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\u7406\u89e3\u62bd\u8c61\u985e\u5225<\/h2>\n<p>\u62bd\u8c61\u985e\u5225\u4ee3\u8868\u67d0\u500b\u6982\u5ff5\u7684\u90e8\u5206\u5be6\u4f5c\u3002\u5b83\u4f5c\u70ba\u5176\u4ed6\u985e\u5225\u7e7c\u627f\u7684\u57fa\u790e\u3002\u9069\u7528\u65bc\u985e\u578b\u4e4b\u9593\u6709\u660e\u78ba\u5c64\u7d1a\u95dc\u4fc2\u7684\u60c5\u5883\u3002\u53ef\u5c07\u5176\u8996\u70ba\u4e00\u4efd\u85cd\u5716\uff0c\u5176\u4e2d\u90e8\u5206\u7d30\u7bc0\u5df2\u586b\u5165\uff0c\u800c\u5176\u4ed6\u90e8\u5206\u5247\u9700\u7531\u5efa\u9020\u8005\u5b8c\u6210\u3002<\/p>\n<p>\u4e3b\u8981\u7279\u5fb5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5171\u7528\u72c0\u614b\uff1a<\/strong> \u62bd\u8c61\u985e\u5225\u53ef\u5b9a\u7fa9\u5132\u5b58\u72c0\u614b\u7684\u8b8a\u6578\uff08\u6b04\u4f4d\uff09\u3002\u5b50\u985e\u5225\u6703\u7e7c\u627f\u6b64\u72c0\u614b\uff0c\u5141\u8a31\u5728\u5c64\u7d1a\u7d50\u69cb\u4e2d\u5171\u4eab\u8cc7\u6599\u3002<\/li>\n<li><strong>\u90e8\u5206\u5be6\u4f5c\uff1a<\/strong> \u5b83\u5011\u53ef\u540c\u6642\u5305\u542b\u5b8c\u5168\u5be6\u4f5c\u7684\u65b9\u6cd5\u8207\u5fc5\u9808\u88ab\u8986\u5beb\u7684\u62bd\u8c61\u65b9\u6cd5\u3002\u9019\u80fd\u6e1b\u5c11\u5171\u901a\u884c\u70ba\u7684\u7a0b\u5f0f\u78bc\u91cd\u8907\u3002<\/li>\n<li><strong>\u55ae\u4e00\u7e7c\u627f\uff1a<\/strong> \u901a\u5e38\uff0c\u4e00\u500b\u985e\u5225\u53ea\u80fd\u7e7c\u627f\u81ea\u4e00\u500b\u62bd\u8c61\u985e\u5225\u3002\u9019\u9650\u5236\u4e86\u7e7c\u627f\u6a39\u7684\u6df1\u5ea6\uff0c\u4f46\u5f37\u5236\u57f7\u884c\u56b4\u683c\u7684\u7236-\u5b50\u95dc\u4fc2\u3002<\/li>\n<li><strong>\u5efa\u69cb\u51fd\u5f0f\u908f\u8f2f\uff1a<\/strong> \u62bd\u8c61\u985e\u5225\u53ef\u64c1\u6709\u5efa\u69cb\u51fd\u5f0f\uff0c\u4ee5\u4fbf\u5728\u5b50\u985e\u5225\u521d\u59cb\u5316\u81ea\u8eab\u72c0\u614b\u4e4b\u524d\uff0c\u5148\u521d\u59cb\u5316\u72c0\u614b\u3002<\/li>\n<\/ul>\n<p>\u4f55\u6642\u61c9\u4f7f\u7528\u6b64\u6a21\u5f0f\uff1f\u8003\u616e\u4e00\u500b\u60c5\u5883\uff1a\u60a8\u6709\u4e00\u7d44\u5f62\u72c0\uff1a\u5713\u5f62\u3001\u65b9\u5f62\u8207\u4e09\u89d2\u5f62\u3002\u5b83\u5011\u7686\u5171\u4eab\u5982\u984f\u8272\u8207\u9762\u7a4d\u8a08\u7b97\u908f\u8f2f\u7b49\u5171\u901a\u5c6c\u6027\u3002\u4e00\u500b\u62bd\u8c61\u985e\u5225<code>Shape<\/code> \u53ef\u5132\u5b58\u984f\u8272\u4e26\u63d0\u4f9b\u9762\u7a4d\u8a08\u7b97\u7684\u9810\u8a2d\u5be6\u4f5c\uff0c\u800c\u5b50\u985e\u5225\u5247\u8986\u5beb\u7279\u5b9a\u65b9\u6cd5\u4ee5\u8655\u7406\u5e7e\u4f55\u904b\u7b97\u3002<\/p>\n<h2>\ud83d\udccb \u7406\u89e3\u4ecb\u9762<\/h2>\n<p>\u4ecb\u9762\u5b9a\u7fa9\u4e86\u4e00\u9805\u5408\u7d04\uff0c\u5be6\u4f5c\u985e\u5225\u5fc5\u9808\u9075\u5b88\u3002\u5b83\u5c08\u6ce8\u65bc\u884c\u70ba\u800c\u975e\u72c0\u614b\u3002\u9069\u7528\u65bc\u9700\u8981\u5b9a\u7fa9\u53ef\u61c9\u7528\u65bc\u7121\u95dc\u985e\u5225\u4e4b\u80fd\u529b\u7684\u60c5\u5883\u3002\u53ef\u5c07\u5176\u8996\u70ba\u4e00\u4efd\u5de5\u4f5c\u8aaa\u660e\uff0c\u4efb\u4f55\u5019\u9078\u4eba\u5fc5\u9808\u7b26\u5408\u624d\u80fd\u88ab\u8058\u7528\u3002<\/p>\n<p>\u4e3b\u8981\u7279\u5fb5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u50c5\u884c\u70ba\uff1a<\/strong> \u50b3\u7d71\u4e0a\uff0c\u4ecb\u9762\u50c5\u5305\u542b\u65b9\u6cd5\u7c3d\u540d\u3002\u5b83\u5011\u5b9a\u7fa9\u4e86\u7269\u4ef6\u80fd\u505a\u4ec0\u9ebc\uff0c\u800c\u4e0d\u662f\u5b83\u662f\u4ec0\u9ebc\u3002<\/li>\n<li><strong>\u591a\u500b\u5be6\u4f5c\uff1a<\/strong> \u4e00\u500b\u985e\u5225\u53ef\u4ee5\u5be6\u4f5c\u591a\u500b\u4ecb\u9762\u3002\u9019\u5141\u8a31\u5728\u4e0d\u4f7f\u7528\u6df1\u5c64\u7e7c\u627f\u5c64\u6b21\u7d50\u69cb\u7684\u60c5\u6cc1\u4e0b\uff0c\u6df7\u5408\u8207\u642d\u914d\u4f86\u81ea\u4e0d\u540c\u4f86\u6e90\u7684\u884c\u70ba\u3002<\/li>\n<li><strong>\u72c0\u614b\u7ba1\u7406\uff1a<\/strong> \u4ecb\u9762\u901a\u5e38\u7121\u6cd5\u6301\u6709\u72c0\u614b\uff08\u5be6\u4f8b\u8b8a\u6578\uff09\u3002\u9019\u78ba\u4fdd\u4e86\u5408\u7d04\u4fdd\u6301\u7d14\u7cb9\uff0c\u4e0d\u4f9d\u8cf4\u65bc\u96b1\u85cf\u8cc7\u6599\u3002<\/li>\n<li><strong>\u9b06\u6563\u8026\u5408\uff1a<\/strong> \u5be6\u4f5c\u4ecb\u9762\u6703\u5efa\u7acb\u5c0d\u5408\u7d04\u7684\u4f9d\u8cf4\uff0c\u800c\u975e\u5c0d\u5be6\u4f5c\u7684\u4f9d\u8cf4\u3002\u9019\u4f7f\u5f97\u6e2c\u8a66\u548c\u6a21\u64ec\u8b8a\u5f97\u66f4\u5bb9\u6613\u3002<\/li>\n<\/ul>\n<p>\u8003\u616e\u4e00\u500b\u6d89\u53ca\u4ed8\u6b3e\u8655\u7406\u7684\u5834\u666f\u3002\u4f60\u53ef\u80fd\u6703\u6709\u4fe1\u7528\u5361\u8655\u7406\u5668\u3001PayPal\u8655\u7406\u5668\u548c\u52a0\u5bc6\u8ca8\u5e63\u8655\u7406\u5668\u3002\u9019\u4e9b\u985e\u578b\u5f7c\u6b64\u7121\u95dc\uff0c\u4f46\u5b83\u5011\u90fd\u5177\u6709\u8655\u7406\u4ed8\u6b3e\u7684\u80fd\u529b\u3002<code>\u8655\u7406\u4ed8\u6b3e<\/code>\u3002\u4e00\u500b\u4ecb\u9762<code>\u4ed8\u6b3e\u7db2\u95dc<\/code> \u78ba\u4fdd\u6240\u6709\u9019\u4e9b\u4e0d\u540c\u7684\u985e\u578b\u90fd\u9075\u5faa\u76f8\u540c\u7684\u7684\u65b9\u6cd5\u7c3d\u540d\uff0c\u8b93\u4f60\u7684\u7cfb\u7d71\u80fd\u4ee5\u7d71\u4e00\u7684\u65b9\u5f0f\u8655\u7406\u5b83\u5011\u3002<\/p>\n<h2>\ud83d\udcca \u4e00\u76ee\u4e86\u7136\u7684\u95dc\u9375\u5dee\u7570<\/h2>\n<p>\u4e0b\u8868\u7e3d\u7d50\u4e86\u9019\u5169\u7a2e\u6a5f\u5236\u4e4b\u9593\u7684\u7d50\u69cb\u8207\u884c\u70ba\u5dee\u7570\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u529f\u80fd<\/th>\n<th>\u62bd\u8c61\u985e\u5225<\/th>\n<th>\u4ecb\u9762<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u7e7c\u627f<\/strong><\/td>\n<td>\u55ae\u4e00\u7e7c\u627f\uff08extends\uff09<\/td>\n<td>\u591a\u91cd\u7e7c\u627f\uff08implements\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u72c0\u614b<\/strong><\/td>\n<td>\u53ef\u4ee5\u64c1\u6709\u5be6\u4f8b\u8b8a\u6578<\/td>\n<td>\u7121\u6cd5\u64c1\u6709\u5be6\u4f8b\u8b8a\u6578<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5be6\u4f5c<\/strong><\/td>\n<td>\u53ef\u4ee5\u64c1\u6709\u5177\u9ad4\u65b9\u6cd5<\/td>\n<td>\u901a\u5e38\u70ba\u62bd\u8c61\u65b9\u6cd5\uff08\u5927\u591a\u6578\u60c5\u6cc1\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u95dc\u4fc2<\/strong><\/td>\n<td>\u662f-\u4e00\u7a2e\u95dc\u4fc2<\/td>\n<td>\u80fd-\u505a\u95dc\u4fc2<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6548\u80fd<\/strong><\/td>\n<td>\u7a0d\u5feb\u7684\u65b9\u6cd5\u8abf\u7528<\/td>\n<td>\u6975\u5c0f\u7684\u6027\u80fd\u958b\u92b7<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5b58\u53d6\u4fee\u98fe\u7b26<\/strong><\/td>\n<td>\u53ef\u4f7f\u7528 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