{"id":37149,"date":"2024-11-26T14:06:08","date_gmt":"2024-11-26T06:06:08","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37149\/"},"modified":"2024-11-26T14:06:08","modified_gmt":"2024-11-26T06:06:08","slug":"java%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e6%95%b0%e7%bb%84%e7%9a%84%e5%a4%8d%e5%88%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37149\/","title":{"rendered":"java\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u590d\u5236"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\u590d\u5236\u6570\u7ec4\uff0c\u76f4\u63a5\u8d4b\u503c\u53ea\u590d\u5236\u5f15\u7528\uff0c\u9700\u8981\u7279\u6b8a\u65b9\u6cd5\u3002java \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u65b9\u6cd5\uff1a1. system.arraycopy()\uff1a\u6307\u5b9a\u6e90\/\u76ee\u6807\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\u3001\u590d\u5236\u5143\u7d20\u6570\u91cf\uff1b2. arrays.copyof()\uff1a\u63a5\u53d7\u6e90\u6570\u7ec4\u548c\u590d\u5236\u5143\u7d20\u6570\u91cf\uff0c\u8fd4\u56de\u65b0\u6570\u7ec4\uff1b3. clone()\uff1a\u9002\u7528\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff0c\u521b\u5efa\u5305\u542b\u76f8\u540c\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111302032028664.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u590d\u5236\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u590d\u5236\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u590d\u5236\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5bf9\u4e8e\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08\u5982 int\u3001double\u3001float \u7b49\uff09\uff0c\u76f4\u63a5\u8d4b\u503c\u53ea\u4f1a\u590d\u5236\u5f15\u7528\uff0c\u800c\u4e0d\u662f\u590d\u5236\u5b9e\u9645\u503c\u3002\u56e0\u6b64\uff0c\u5bf9\u4e8e\u6570\u7ec4\u7c7b\u578b\uff0c\u9700\u8981\u91c7\u53d6\u7279\u6b8a\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\u590d\u5236\u3002<\/p>\n<p>Java \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u65b9\u6cd5\u6765\u590d\u5236\u6570\u7ec4\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>System.arraycopy() \u65b9\u6cd5\u662f\u590d\u5236\u6570\u7ec4\u6700\u5e38\u7528\u548c\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002\u5b83\u5141\u8bb8\u6307\u5b9a\u6e90\u6570\u7ec4\u3001\u76ee\u6807\u6570\u7ec4\u3001\u6e90\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15\u3001\u76ee\u6807\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15\u4ee5\u53ca\u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf\u3002<\/p>\n<pre>import java.util.Arrays;\n\npublic class ArrayCopyExample {\n\n    public static void main(String[] args) {\n        int[] originalArray = {1, 2, 3, 4, 5};\n        int[] copyArray = new int[originalArray.length];\n\n        \/\/ \u4f7f\u7528 System.arraycopy() \u590d\u5236\u6570\u7ec4\n        System.arraycopy(originalArray, 0, copyArray, 0, originalArray.length);\n\n        \/\/ \u8f93\u51fa\u590d\u5236\u540e\u7684\u6570\u7ec4\n        System.out.println(Arrays.toString(copyArray));\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n<p>Arrays.copyOf() \u65b9\u6cd5\u63d0\u4f9b\u4e86\u53e6\u4e00\u4e2a\u66f4\u7b80\u6d01\u7684\u590d\u5236\u6570\u7ec4\u7684\u65b9\u6cd5\u3002\u5b83\u53ea\u63a5\u53d7\u6e90\u6570\u7ec4\u548c\u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf\u4e24\u4e2a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002<\/p>\n<pre>import java.util.Arrays;\n\npublic class ArrayCopyExample {\n\n    public static void main(String[] args) {\n        int[] originalArray = {1, 2, 3, 4, 5};\n\n        \/\/ \u4f7f\u7528 Arrays.copyOf() \u590d\u5236\u6570\u7ec4\n        int[] copyArray = Arrays.copyOf(originalArray, originalArray.length);\n\n        \/\/ \u8f93\u51fa\u590d\u5236\u540e\u7684\u6570\u7ec4\n        System.out.println(Arrays.toString(copyArray));\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528 clone() \u65b9\u6cd5<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 clone() \u65b9\u6cd5\u6765\u521b\u5efa\u8be5\u6570\u7ec4\u7684\u514b\u9686\u3002clone() \u65b9\u6cd5\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5305\u542b\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\u5143\u7d20\u7684\u526f\u672c\u3002<\/p>\n<pre>import java.util.Arrays;\n\npublic class ArrayCopyExample {\n\n    public static void main(String[] args) {\n        String[] originalArray = {\"a\", \"b\", \"c\", \"d\", \"e\"};\n\n        \/\/ \u4f7f\u7528 clone() \u590d\u5236\u6570\u7ec4\n        String[] copyArray = originalArray.clone();\n\n        \/\/ \u8f93\u51fa\u590d\u5236\u540e\u7684\u6570\u7ec4\n        System.out.println(Arrays.toString(copyArray));\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u9009\u62e9\u54ea\u79cd\u590d\u5236\u6570\u7ec4\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u60c5\u51b5\u548c\u6027\u80fd\u8981\u6c42\u3002\u5bf9\u4e8e\u57fa\u672c\u6570\u636e\u7c7b\u578b\u6570\u7ec4\uff0c\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u901a\u5e38\u662f\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002\u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff0cclone() \u65b9\u6cd5\u53ef\u4ee5\u63d0\u4f9b\u66f4\u7b80\u5355\u548c\u66f4\u5065\u58ee\u7684\u590d\u5236\u673a\u5236\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u590d\u5236\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\u590d\u5236\u6570\u7ec4\uff0c\u76f4\u63a5\u8d4b\u503c\u53ea\u590d\u5236\u5f15\u7528\uff0c\u9700\u8981\u7279\u6b8a\u65b9\u6cd5\u3002java \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u65b9\u6cd5\uff1a1. system.arraycopy()\uff1a\u6307\u5b9a\u6e90\/\u76ee\u6807\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\u3001\u590d\u5236\u5143\u7d20\u6570\u91cf\uff1b2. arrays.copyof()\uff1a\u63a5\u53d7\u6e90\u6570\u7ec4\u548c\u590d\u5236\u5143\u7d20\u6570\u91cf\uff0c\u8fd4\u56de\u65b0\u6570\u7ec4\uff1b3. clone()\uff1a\u9002\u7528\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff0c\u521b\u5efa\u5305\u542b\u76f8\u540c\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u4e2d\u590d\u5236\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u5bf9\u4e8e\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08\u5982 int\u3001double\u3001float \u7b49\uff09\uff0c\u76f4\u63a5\u8d4b\u503c\u53ea\u4f1a\u590d\u5236\u5f15\u7528\uff0c\u800c\u4e0d\u662f\u590d\u5236\u5b9e\u9645\u503c\u3002\u56e0\u6b64\uff0c\u5bf9\u4e8e\u6570\u7ec4\u7c7b\u578b\uff0c\u9700\u8981\u91c7\u53d6\u7279\u6b8a\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\u590d\u5236\u3002 Java \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u65b9\u6cd5\u6765\u590d\u5236\u6570\u7ec4\uff1a 1. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b System.arraycopy() \u65b9\u6cd5\u662f\u590d\u5236\u6570\u7ec4\u6700\u5e38\u7528\u548c\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002\u5b83\u5141\u8bb8\u6307\u5b9a\u6e90\u6570\u7ec4\u3001\u76ee\u6807\u6570\u7ec4\u3001\u6e90\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15\u3001\u76ee\u6807\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15\u4ee5\u53ca\u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf\u3002 import java.util.Arrays; public class ArrayCopyExample { public static void main(String[] args) { int[] originalArray = {1, 2, 3, 4, 5}; int[] copyArray = new int[originalArray.length]; \/\/ \u4f7f\u7528 System.arraycopy() \u590d\u5236\u6570\u7ec4 System.arraycopy(originalArray, 0, [&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-37149","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37149","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=37149"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37149\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}