{"id":66265,"date":"2025-05-03T16:20:52","date_gmt":"2025-05-03T08:20:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66265\/"},"modified":"2025-05-03T16:20:52","modified_gmt":"2025-05-03T08:20:52","slug":"%e5%9c%a8java%e4%b8%ad%e6%8e%a5%e5%8f%a3%e7%9a%84%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e7%94%a8-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66265\/","title":{"rendered":"\u5728java\u4e2d\u63a5\u53e3\u7684\u6570\u7ec4\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u63a5\u53e3\u6570\u7ec4\u53ef\u5b58\u50a8\u5177\u5907\u76f8\u540c\u884c\u4e3a\u7684\u591a\u79cd\u5bf9\u8c61\uff0c\u63d0\u5347\u4ee3\u7801\u7075\u6d3b\u6027\uff1a\u5b9a\u4e49\u63a5\u53e3\uff0c\u5982 animal \u5177\u5907 makesound() \u65b9\u6cd5\uff1b\u58f0\u660e\u63a5\u53e3\u6570\u7ec4\uff0c\u5982 animal[] animals = new animal[3]\uff1b\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u5e76\u8c03\u7528\u63a5\u53e3\u65b9\u6cd5\uff0c\u5982 animals[0].makesound()\uff1b\u63a5\u53e3\u6570\u7ec4\u4f18\u70b9\uff1a\u7075\u6d3b\u6027\u3001\u89e3\u8026\u3001\u591a\u6001\u6027\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/15\/2024111505335189757.jpg\" class=\"aligncenter\" title=\"\u5728java\u4e2d\u63a5\u53e3\u7684\u6570\u7ec4\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"\u5728java\u4e2d\u63a5\u53e3\u7684\u6570\u7ec4\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u63a5\u53e3\u6570\u7ec4<\/strong><\/p>\n<p><strong>\u524d\u8a00<\/strong><br \/>\u63a5\u53e3\u6570\u7ec4\u5141\u8bb8\u6211\u4eec\u5728 Java \u4e2d\u5b58\u50a8\u591a\u4e2a\u5177\u6709\u76f8\u4f3c\u884c\u4e3a\u7684\u5bf9\u8c61\u3002\u5b83\u4e3a\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u7075\u6d3b\u6027\uff0c\u4f7f\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u5177\u6709\u4e0d\u540c\u5177\u4f53\u5b9e\u73b0\u7684\u5bf9\u8c61\u5206\u7ec4\u5728\u4e00\u8d77\u3002<\/p>\n<p><strong>\u58f0\u660e\u4e00\u4e2a\u63a5\u53e3\u6570\u7ec4<\/strong><br \/>\u8981\u58f0\u660e\u4e00\u4e2a\u63a5\u53e3\u6570\u7ec4\uff0c\u9700\u8981\u5148\u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>interface Animal {\n   void makeSound();\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u7136\u540e\u6211\u4eec\u53ef\u4ee5\u58f0\u660e\u4e00\u4e2a\u63a5\u53e3\u6570\u7ec4\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>Animal[] animals = new Animal[3];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528\u63a5\u53e3\u6570\u7ec4<\/strong><br \/>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u5e76\u8c03\u7528\u5b9e\u73b0\u7684\u63a5\u53e3\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>animals[0] = new Dog();\nanimals[0].makeSound(); \/\/ \u8c03\u7528 Dog \u7c7b\u4e2d\u5b9e\u73b0\u7684 makeSound() \u65b9\u6cd5<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f18\u70b9<\/strong><br \/>\u4f7f\u7528\u63a5\u53e3\u6570\u7ec4\u7684\u4f18\u70b9\u5305\u62ec\uff1a<\/p>\n<ul>\n<li> <strong>\u7075\u6d3b\u6027\uff1a<\/strong>\u5b83\u5141\u8bb8\u6211\u4eec\u5b58\u50a8\u4e0d\u540c\u5b9e\u73b0\u7684\u591a\u4e2a\u5bf9\u8c61\uff0c\u4ece\u800c\u63d0\u4f9b\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u3002<\/li>\n<li> <strong>\u89e3\u8026\uff1a<\/strong>\u5b83\u5c06\u63a5\u53e3\u7684\u5b9a\u4e49\u4e0e\u5177\u4f53\u5b9e\u73b0\u89e3\u8026\uff0c\u4f7f\u5176\u66f4\u5bb9\u6613\u6269\u5c55\u548c\u7ef4\u62a4\u4ee3\u7801\u3002<\/li>\n<li> <strong>\u591a\u6001\u6027\uff1a<\/strong>\u7531\u4e8e\u6240\u6709\u63a5\u53e3\u6570\u7ec4\u4e2d\u7684\u5bf9\u8c61\u90fd\u5b9e\u73b0\u4e86\u76f8\u540c\u7684\u63a5\u53e3\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u591a\u6001\u6027\u5bf9\u5b83\u4eec\u8fdb\u884c\u64cd\u4f5c\uff0c\u800c\u4e0d\u5fc5\u77e5\u9053\u5b83\u4eec\u7684\u5177\u4f53\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b<\/strong><br \/>\u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u4e86\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u63a5\u53e3\u6570\u7ec4\uff1a<\/p>\n<pre>public class Main {\n   public static void main(String[] args) {\n      Animal[] animals = new Animal[3];\n      animals[0] = new Dog();\n      animals[1] = new Cat();\n      animals[2] = new Bird();\n\n      for (Animal animal : animals) {\n         animal.makeSound();\n      }\n   }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>\u6c6a\uff01\n\u55b5\uff01\n\u557e\uff01<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5728java\u4e2d\u63a5\u53e3\u7684\u6570\u7ec4\u600e\u4e48\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u4e2d\uff0c\u63a5\u53e3\u6570\u7ec4\u53ef\u5b58\u50a8\u5177\u5907\u76f8\u540c\u884c\u4e3a\u7684\u591a\u79cd\u5bf9\u8c61\uff0c\u63d0\u5347\u4ee3\u7801\u7075\u6d3b\u6027\uff1a\u5b9a\u4e49\u63a5\u53e3\uff0c\u5982 animal \u5177\u5907 makesound() \u65b9\u6cd5\uff1b\u58f0\u660e\u63a5\u53e3\u6570\u7ec4\uff0c\u5982 animal[] animals = new animal[3]\uff1b\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u5e76\u8c03\u7528\u63a5\u53e3\u65b9\u6cd5\uff0c\u5982 animals[0].makesound()\uff1b\u63a5\u53e3\u6570\u7ec4\u4f18\u70b9\uff1a\u7075\u6d3b\u6027\u3001\u89e3\u8026\u3001\u591a\u6001\u6027\u3002 \u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u63a5\u53e3\u6570\u7ec4 \u524d\u8a00\u63a5\u53e3\u6570\u7ec4\u5141\u8bb8\u6211\u4eec\u5728 Java \u4e2d\u5b58\u50a8\u591a\u4e2a\u5177\u6709\u76f8\u4f3c\u884c\u4e3a\u7684\u5bf9\u8c61\u3002\u5b83\u4e3a\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u7075\u6d3b\u6027\uff0c\u4f7f\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u5177\u6709\u4e0d\u540c\u5177\u4f53\u5b9e\u73b0\u7684\u5bf9\u8c61\u5206\u7ec4\u5728\u4e00\u8d77\u3002 \u58f0\u660e\u4e00\u4e2a\u63a5\u53e3\u6570\u7ec4\u8981\u58f0\u660e\u4e00\u4e2a\u63a5\u53e3\u6570\u7ec4\uff0c\u9700\u8981\u5148\u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\u3002\u4f8b\u5982\uff1a interface Animal { void makeSound(); } \u767b\u5f55\u540e\u590d\u5236 \u7136\u540e\u6211\u4eec\u53ef\u4ee5\u58f0\u660e\u4e00\u4e2a\u63a5\u53e3\u6570\u7ec4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Animal[] animals = new Animal[3]; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u63a5\u53e3\u6570\u7ec4\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u5e76\u8c03\u7528\u5b9e\u73b0\u7684\u63a5\u53e3\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a animals[0] = new Dog(); animals[0].makeSound(); \/\/ \u8c03\u7528 Dog \u7c7b\u4e2d\u5b9e\u73b0\u7684 makeSound() \u65b9\u6cd5 \u767b\u5f55\u540e\u590d\u5236 \u4f18\u70b9\u4f7f\u7528\u63a5\u53e3\u6570\u7ec4\u7684\u4f18\u70b9\u5305\u62ec\uff1a \u7075\u6d3b\u6027\uff1a\u5b83\u5141\u8bb8\u6211\u4eec\u5b58\u50a8\u4e0d\u540c\u5b9e\u73b0\u7684\u591a\u4e2a\u5bf9\u8c61\uff0c\u4ece\u800c\u63d0\u4f9b\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u3002 \u89e3\u8026\uff1a\u5b83\u5c06\u63a5\u53e3\u7684\u5b9a\u4e49\u4e0e\u5177\u4f53\u5b9e\u73b0\u89e3\u8026\uff0c\u4f7f\u5176\u66f4\u5bb9\u6613\u6269\u5c55\u548c\u7ef4\u62a4\u4ee3\u7801\u3002 \u591a\u6001\u6027\uff1a\u7531\u4e8e\u6240\u6709\u63a5\u53e3\u6570\u7ec4\u4e2d\u7684\u5bf9\u8c61\u90fd\u5b9e\u73b0\u4e86\u76f8\u540c\u7684\u63a5\u53e3\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u591a\u6001\u6027\u5bf9\u5b83\u4eec\u8fdb\u884c\u64cd\u4f5c\uff0c\u800c\u4e0d\u5fc5\u77e5\u9053\u5b83\u4eec\u7684\u5177\u4f53\u7c7b\u578b\u3002 \u793a\u4f8b\u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u4e86\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528\u63a5\u53e3\u6570\u7ec4\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-66265","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=66265"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66265\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}