{"id":65589,"date":"2025-05-03T09:58:45","date_gmt":"2025-05-03T01:58:45","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65589\/"},"modified":"2025-05-03T09:58:45","modified_gmt":"2025-05-03T01:58:45","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e5%bc%ba%e5%88%b6%e8%bd%ac%e6%8d%a2%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65589\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f3a\u5236\u8f6c\u6362\u4e3a\u53e6\u4e00\u4e2a\u7c7b\u578b\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u6307\u5b9a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111304425451581.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u600e\u4e48\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u4e2d\u600e\u4e48\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26<\/strong><\/p>\n<p>\u8be5\u8fd0\u7b97\u7b26\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f3a\u5236\u8f6c\u6362\u4e3a\u53e6\u4e00\u4e2a\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>(\u76ee\u6807\u7c7b\u578b[]) \u6e90\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre>int[] intArray = {1, 2, 3};\nObject[] objectArray = (Object[]) intArray;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n<p>\u8be5\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u6307\u5b9a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>Arrays.copyOf(\u6e90\u6570\u7ec4, \u76ee\u6807\u957f\u5ea6)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre>int[] intArray = {1, 2, 3};\nObject[] objectArray = Arrays.copyOf(intArray, intArray.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6216\u7c7b\u578b\u4e0d\u517c\u5bb9\u5f02\u5e38\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u65f6\u8981\u8c28\u614e\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\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\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f3a\u5236\u8f6c\u6362\u4e3a\u53e6\u4e00\u4e2a\u7c7b\u578b\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u6307\u5b9a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 Java \u4e2d\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a \u65b9\u6cd5 1\uff1a\u4f7f\u7528\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26 \u8be5\u8fd0\u7b97\u7b26\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f3a\u5236\u8f6c\u6362\u4e3a\u53e6\u4e00\u4e2a\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b (\u76ee\u6807\u7c7b\u578b[]) \u6e90\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff1a int[] intArray = {1, 2, 3}; Object[] objectArray = (Object[]) intArray; \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5 \u8be5\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u6307\u5b9a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a Arrays.copyOf(\u6e90\u6570\u7ec4, \u76ee\u6807\u957f\u5ea6) \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff1a int[] intArray = {1, 2, 3}; Object[] objectArray = Arrays.copyOf(intArray, intArray.length); \u767b\u5f55\u540e\u590d\u5236 \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6216\u7c7b\u578b\u4e0d\u517c\u5bb9\u5f02\u5e38\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u65f6\u8981\u8c28\u614e\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u5f3a\u5236\u8f6c\u6362\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-65589","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65589","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=65589"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65589\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}