{"id":38528,"date":"2024-11-26T15:25:57","date_gmt":"2024-11-26T07:25:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38528\/"},"modified":"2024-11-26T15:25:57","modified_gmt":"2024-11-26T07:25:57","slug":"java%e7%88%b6%e7%b1%bb%e7%9a%84%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e7%bb%99%e5%ad%90%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38528\/","title":{"rendered":"java\u7236\u7c7b\u7684\u6570\u7ec4\u600e\u4e48\u7ed9\u5b50\u7c7b"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a1. \u4f7f\u7528 super \u5173\u952e\u5b57\u5f15\u7528\u7236\u7c7b\u7684\u539f\u59cb\u6570\u7ec4\uff1b2. \u901a\u8fc7\u6784\u9020\u51fd\u6570\u8c03\u7528\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u5b50\u7c7b\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/15\/2024111502513655671.jpg\" class=\"aligncenter\" title=\"java\u7236\u7c7b\u7684\u6570\u7ec4\u600e\u4e48\u7ed9\u5b50\u7c7b\u63d2\u56fe\" alt=\"java\u7236\u7c7b\u7684\u6570\u7ec4\u600e\u4e48\u7ed9\u5b50\u7c7b\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5982\u4f55\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u901a\u8fc7\u7ee7\u627f\u673a\u5236\uff0c\u5b50\u7c7b\u53ef\u4ee5\u7ee7\u627f\u7236\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u7136\u800c\uff0c\u5982\u679c\u7236\u7c7b\u5305\u542b\u4e00\u4e2a\u6570\u7ec4\u5c5e\u6027\uff0c\u5219\u76f4\u63a5\u5c06\u8be5\u6570\u7ec4\u5206\u914d\u7ed9\u5b50\u7c7b\u4f1a\u4ea7\u751f\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u800c\u4e0d\u662f\u5f15\u7528\u7236\u7c7b\u7684\u539f\u59cb\u6570\u7ec4\u3002<\/p>\n<p>\u8981\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b\uff0c\u6709\u4e24\u79cd\u5e38\u89c1\u7684\u65b9\u5f0f\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 <\/strong>super<strong> \u5173\u952e\u5b57<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>super<\/strong> \u5173\u952e\u5b57\u5141\u8bb8\u5b50\u7c7b\u8bbf\u95ee\u7236\u7c7b\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\u3002\u4f7f\u7528 <strong>super<\/strong> \u8bbf\u95ee\u7236\u7c7b\u7684\u6570\u7ec4\u5c5e\u6027\u65f6\uff0c\u5b9e\u9645\u4e0a\u662f\u5f15\u7528\u7236\u7c7b\u7684\u539f\u59cb\u6570\u7ec4\u3002<\/p>\n<pre>class Parent {\n  int[] arr = {1, 2, 3};\n}\n\nclass Child extends Parent {\n  int[] arr2 = super.arr;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u73b0\u5728\uff0carr2 \u5f15\u7528\u4e86 arr \u6570\u7ec4\u7684\u540c\u4e00\u5757\u5185\u5b58\u533a\u57df\u3002<\/p>\n<p><strong>2. \u8c03\u7528\u7236\u7c7b\u7684\u6784\u9020\u51fd\u6570<\/strong><\/p>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u901a\u8fc7\u6784\u9020\u51fd\u6570\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b\u3002\u5b50\u7c7b\u6784\u9020\u51fd\u6570\u53ef\u4ee5\u8c03\u7528\u7236\u7c7b\u7684\u6784\u9020\u51fd\u6570\uff0c\u5e76\u4f20\u9012\u7236\u7c7b\u7684\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n<pre>class Parent {\n  int[] arr = {1, 2, 3};\n\n  Parent(int[] arr) {\n    this.arr = arr;\n  }\n}\n\nclass Child extends Parent {\n  Child(int[] arr) {\n    super(arr);\n  }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u73b0\u5728\uff0cChild \u7c7b\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u7236\u7c7b\u6784\u9020\u51fd\u6570\u4f20\u9012\u7684\u6570\u7ec4\u6765\u4f7f\u7528 arr \u6570\u7ec4\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u7236\u7c7b\u7684\u6570\u7ec4\u600e\u4e48\u7ed9\u5b50\u7c7b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u4e2d\uff0c\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a1. \u4f7f\u7528 super \u5173\u952e\u5b57\u5f15\u7528\u7236\u7c7b\u7684\u539f\u59cb\u6570\u7ec4\uff1b2. \u901a\u8fc7\u6784\u9020\u51fd\u6570\u8c03\u7528\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u5b50\u7c7b\u3002 Java \u4e2d\u5982\u4f55\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b \u5728 Java \u4e2d\uff0c\u901a\u8fc7\u7ee7\u627f\u673a\u5236\uff0c\u5b50\u7c7b\u53ef\u4ee5\u7ee7\u627f\u7236\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u7136\u800c\uff0c\u5982\u679c\u7236\u7c7b\u5305\u542b\u4e00\u4e2a\u6570\u7ec4\u5c5e\u6027\uff0c\u5219\u76f4\u63a5\u5c06\u8be5\u6570\u7ec4\u5206\u914d\u7ed9\u5b50\u7c7b\u4f1a\u4ea7\u751f\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u800c\u4e0d\u662f\u5f15\u7528\u7236\u7c7b\u7684\u539f\u59cb\u6570\u7ec4\u3002 \u8981\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b\uff0c\u6709\u4e24\u79cd\u5e38\u89c1\u7684\u65b9\u5f0f\uff1a 1. \u4f7f\u7528 super \u5173\u952e\u5b57 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b super \u5173\u952e\u5b57\u5141\u8bb8\u5b50\u7c7b\u8bbf\u95ee\u7236\u7c7b\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\u3002\u4f7f\u7528 super \u8bbf\u95ee\u7236\u7c7b\u7684\u6570\u7ec4\u5c5e\u6027\u65f6\uff0c\u5b9e\u9645\u4e0a\u662f\u5f15\u7528\u7236\u7c7b\u7684\u539f\u59cb\u6570\u7ec4\u3002 class Parent { int[] arr = {1, 2, 3}; } class Child extends Parent { int[] arr2 = super.arr; } \u767b\u5f55\u540e\u590d\u5236 \u73b0\u5728\uff0carr2 \u5f15\u7528\u4e86 arr \u6570\u7ec4\u7684\u540c\u4e00\u5757\u5185\u5b58\u533a\u57df\u3002 2. \u8c03\u7528\u7236\u7c7b\u7684\u6784\u9020\u51fd\u6570 \u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u901a\u8fc7\u6784\u9020\u51fd\u6570\u5c06\u7236\u7c7b\u7684\u6570\u7ec4\u4f20\u9012\u7ed9\u5b50\u7c7b\u3002\u5b50\u7c7b\u6784\u9020\u51fd\u6570\u53ef\u4ee5\u8c03\u7528\u7236\u7c7b\u7684\u6784\u9020\u51fd\u6570\uff0c\u5e76\u4f20\u9012\u7236\u7c7b\u7684\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u3002 class Parent { int[] arr [&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-38528","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38528","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=38528"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38528\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38528"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38528"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}