{"id":66892,"date":"2025-05-03T12:24:34","date_gmt":"2025-05-03T04:24:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66892\/"},"modified":"2025-05-03T12:24:34","modified_gmt":"2025-05-03T04:24:34","slug":"java%e6%80%8e%e4%b9%88%e5%a4%8d%e5%88%b6%e4%b8%80%e4%b8%aa%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66892\/","title":{"rendered":"java\u600e\u4e48\u590d\u5236\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u5982\u4f55\u590d\u5236 java \u4e8c\u7ef4\u6570\u7ec4\uff1f\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u590d\u5236 java \u4e8c\u7ef4\u6570\u7ec4\uff1a\u6d45\u62f7\u8d1d\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u6307\u5411\u539f\u59cb\u6570\u7ec4\u76f8\u540c\u5143\u7d20\uff0c\u66f4\u6539\u65b0\u6570\u7ec4\u5143\u7d20\u65f6\u539f\u59cb\u6570\u7ec4\u4e5f\u53d7\u5f71\u54cd\u3002\u6df1\u62f7\u8d1d\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u590d\u5236\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u503c\uff0c\u66f4\u6539\u65b0\u6570\u7ec4\u5143\u7d20\u4e0d\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u4f7f\u7528 system.arraycopy()\uff1a\u590d\u5236\u90e8\u5206\u6216\u5168\u90e8\u539f\u59cb\u6570\u7ec4\u5230\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof()\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u6240\u6709\u5143\u7d20\u3002\u4f7f\u7528 clone()\uff08\u53ef\u514b\u9686\u5b9e\u73b0\uff09\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u6240\u6709\u5143\u7d20\u7684\u526f\u672c\u3002\u9009\u62e9\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u5927\u5c0f\u3001\u662f\u5426\u9700\u8981\u66f4\u6539\u590d\u5236\u540e\u7684\u6570\u7ec4\u4ee5\u53ca\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111717340348793.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u590d\u5236\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u590d\u5236\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u590d\u5236 Java \u4e8c\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>\u590d\u5236 Java \u4e8c\u7ef4\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u6bcf\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\u3002<\/p>\n<p><strong>\u6d45\u62f7\u8d1d<\/strong><\/p>\n<p>\u6d45\u62f7\u8d1d\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5b83\u6307\u5411\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\u7684\u5143\u7d20\u3002\u56e0\u6b64\uff0c\u66f4\u6539\u65b0\u6570\u7ec4\u4e2d\u7684\u4efb\u4f55\u5143\u7d20\u4e5f\u4f1a\u66f4\u6539\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u76f8\u5e94\u5143\u7d20\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[][] original = {{1, 2}, {3, 4}};\nint[][] copy = original;\ncopy[0][0] = 5;\nSystem.out.println(original[0][0]); \/\/ \u8f93\u51fa 5\uff0c\u56e0\u4e3a\u4e24\u4e2a\u6570\u7ec4\u6307\u5411\u76f8\u540c\u7684\u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6df1\u62f7\u8d1d<\/strong><\/p>\n<p>\u6df1\u62f7\u8d1d\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u503c\u3002\u66f4\u6539\u65b0\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002<\/p>\n<p><strong>\u4f7f\u7528 System.arraycopy()<\/strong><\/p>\n<p>System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u590d\u5236\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u6216\u5168\u90e8\u3002<\/p>\n<pre>int[][] original = {{1, 2}, {3, 4}};\nint[][] copy = new int[2][2];\nSystem.arraycopy(original, 0, copy, 0, 2);\ncopy[0][0] = 5;\nSystem.out.println(original[0][0]); \/\/ \u8f93\u51fa 1\uff0c\u56e0\u4e3a\u65b0\u6570\u7ec4\u5305\u542b\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u7684\u526f\u672c<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Arrays.copyOf()<\/strong><\/p>\n<p>Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n<pre>int[][] original = {{1, 2}, {3, 4}};\nint[][] copy = Arrays.copyOf(original, original.length);\ncopy[0][0] = 5;\nSystem.out.println(original[0][0]); \/\/ \u8f93\u51fa 1\uff0c\u56e0\u4e3a\u65b0\u6570\u7ec4\u5305\u542b\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u7684\u526f\u672c<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 clone()<\/strong><\/p>\n<p>\u5982\u679c\u6570\u7ec4\u662f Cloneable \u63a5\u53e3\u7684\u5b9e\u73b0\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528 clone() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\u3002<\/p>\n<pre>class CloneableArray implements Cloneable {\n    private int[][] array;\n\n    @Override\n    public CloneableArray clone() {\n        try {\n            CloneableArray clone = (CloneableArray) super.clone();\n            clone.array = new int[array.length][];\n            for (int i = 0; i &lt; array.length; i++) {\n                clone.array[i] = array[i].clone();\n            }\n            return clone;\n        } catch (CloneNotSupportedException e) {\n            return null;\n        }\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9009\u62e9\u65b9\u6cd5<\/strong><\/p>\n<p>\u9009\u62e9\u590d\u5236\u4e8c\u7ef4\u6570\u7ec4\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u9700\u8981\u590d\u5236\u7684\u6570\u7ec4\u7684\u5927\u5c0f\u3001\u662f\u5426\u9700\u8981\u66f4\u6539\u590d\u5236\u540e\u7684\u6570\u7ec4\u4ee5\u53ca\u6027\u80fd\u8981\u6c42\u3002\u5bf9\u4e8e\u5c0f\u6570\u7ec4\uff0c\u6d45\u62f7\u8d1d\u53ef\u80fd\u5c31\u8db3\u591f\u4e86\u3002\u5bf9\u4e8e\u9700\u8981\u66f4\u6539\u590d\u5236\u540e\u6570\u7ec4\u6216\u5305\u542b\u5927\u91cf\u5143\u7d20\u7684\u5927\u6570\u7ec4\uff0c\u5219\u6df1\u62f7\u8d1d\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u590d\u5236\u4e00\u4e2a\u4e8c\u7ef4\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>\u5982\u4f55\u590d\u5236 java \u4e8c\u7ef4\u6570\u7ec4\uff1f\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u590d\u5236 java \u4e8c\u7ef4\u6570\u7ec4\uff1a\u6d45\u62f7\u8d1d\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u6307\u5411\u539f\u59cb\u6570\u7ec4\u76f8\u540c\u5143\u7d20\uff0c\u66f4\u6539\u65b0\u6570\u7ec4\u5143\u7d20\u65f6\u539f\u59cb\u6570\u7ec4\u4e5f\u53d7\u5f71\u54cd\u3002\u6df1\u62f7\u8d1d\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u590d\u5236\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u503c\uff0c\u66f4\u6539\u65b0\u6570\u7ec4\u5143\u7d20\u4e0d\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002\u4f7f\u7528 system.arraycopy()\uff1a\u590d\u5236\u90e8\u5206\u6216\u5168\u90e8\u539f\u59cb\u6570\u7ec4\u5230\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof()\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u6240\u6709\u5143\u7d20\u3002\u4f7f\u7528 clone()\uff08\u53ef\u514b\u9686\u5b9e\u73b0\uff09\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u6240\u6709\u5143\u7d20\u7684\u526f\u672c\u3002\u9009\u62e9\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u5927\u5c0f\u3001\u662f\u5426\u9700\u8981\u66f4\u6539\u590d\u5236\u540e\u7684\u6570\u7ec4\u4ee5\u53ca \u5982\u4f55\u590d\u5236 Java \u4e8c\u7ef4\u6570\u7ec4 \u590d\u5236 Java \u4e8c\u7ef4\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u6bcf\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\u3002 \u6d45\u62f7\u8d1d \u6d45\u62f7\u8d1d\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5b83\u6307\u5411\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\u7684\u5143\u7d20\u3002\u56e0\u6b64\uff0c\u66f4\u6539\u65b0\u6570\u7ec4\u4e2d\u7684\u4efb\u4f55\u5143\u7d20\u4e5f\u4f1a\u66f4\u6539\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u76f8\u5e94\u5143\u7d20\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[][] original = {{1, 2}, {3, 4}}; int[][] copy = original; copy[0][0] = 5; System.out.println(original[0][0]); \/\/ \u8f93\u51fa 5\uff0c\u56e0\u4e3a\u4e24\u4e2a\u6570\u7ec4\u6307\u5411\u76f8\u540c\u7684\u5143\u7d20 \u767b\u5f55\u540e\u590d\u5236 \u6df1\u62f7\u8d1d \u6df1\u62f7\u8d1d\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5e76\u590d\u5236\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u503c\u3002\u66f4\u6539\u65b0\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u7ec4\u3002 \u4f7f\u7528 System.arraycopy() System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u590d\u5236\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u6216\u5168\u90e8\u3002 int[][] original = {{1, 2}, {3, 4}}; int[][] copy = new int[2][2]; System.arraycopy(original, [&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-66892","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66892","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=66892"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66892\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}