{"id":65382,"date":"2025-05-03T14:15:40","date_gmt":"2025-05-03T06:15:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65382\/"},"modified":"2025-05-03T14:15:40","modified_gmt":"2025-05-03T06:15:40","slug":"java%e6%95%b0%e7%bb%84arraycopy%e6%80%8e%e4%b9%88%e5%a4%8d%e5%88%b6-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65382\/","title":{"rendered":"java\u6570\u7ec4arraycopy\u600e\u4e48\u590d\u5236"},"content":{"rendered":"

\n arraycopy() \u65b9\u6cd5\u7528\u4e8e\u4ece\u6e90\u6570\u7ec4\u6307\u5b9a\u8303\u56f4\u590d\u5236\u5143\u7d20\u5230\u76ee\u6807\u6570\u7ec4\u6307\u5b9a\u4f4d\u7f6e\uff0c\u5177\u4f53\u6b65\u9aa4\u5305\u62ec\uff1a\u786e\u5b9a\u6e90\u6570\u7ec4\u548c\u76ee\u6807\u6570\u7ec4\u3002\u6307\u5b9a\u8981\u590d\u5236\u7684\u5143\u7d20\u8303\u56f4\uff08\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\uff09\u3002\u8c03\u7528 arraycopy() \u65b9\u6cd5\uff0c\u4f20\u5165\u6e90\u6570\u7ec4\u3001\u6e90\u8d77\u59cb\u7d22\u5f15\u3001\u76ee\u6807\u6570\u7ec4\u3001\u76ee\u6807\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4arraycopy\u600e\u4e48\u590d\u5236\u63d2\u56fe\"<\/p>\n

Java \u6570\u7ec4\u4e2d\u7684 arraycopy() \u65b9\u6cd5\uff1a\u6570\u636e\u590d\u5236\u6307\u5357<\/strong><\/p>\n

arraycopy() \u65b9\u6cd5\u7684\u7528\u9014<\/strong><\/p>\n

arraycopy() \u65b9\u6cd5\u5728 Java \u4e2d\u7528\u4e8e\u590d\u5236\u6570\u7ec4\u5143\u7d20\u3002\u5b83\u53ef\u4ee5\u4ece\u6e90\u6570\u7ec4\u590d\u5236\u4e00\u6bb5\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u5230\u76ee\u6807\u6570\u7ec4\u4e2d\u7684\u6307\u5b9a\u4f4d\u7f6e\u3002<\/p>\n

arraycopy() \u65b9\u6cd5\u7684\u8bed\u6cd5<\/strong><\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u53c2\u6570\u8bf4\u660e\uff1a<\/strong><\/p>\n
    \n
  •  src<\/strong>\uff1a\u6e90\u6570\u7ec4\u5bf9\u8c61\u3002<\/li>\n
  •  srcPos<\/strong>\uff1a\u8981\u590d\u5236\u7684\u6e90\u6570\u7ec4\u7684\u8d77\u59cb\u4f4d\u7f6e\uff08\u7d22\u5f15\uff09\u3002<\/li>\n
  •  dest<\/strong>\uff1a\u76ee\u6807\u6570\u7ec4\u5bf9\u8c61\u3002<\/li>\n
  •  destPos<\/strong>\uff1a\u8981\u5c06\u590d\u5236\u5143\u7d20\u653e\u5165\u76ee\u6807\u6570\u7ec4\u7684\u8d77\u59cb\u4f4d\u7f6e\uff08\u7d22\u5f15\uff09\u3002<\/li>\n
  •  length<\/strong>\uff1a\u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf\u3002<\/li>\n<\/ul>\n
    \u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n
    \u8981\u590d\u5236\u6570\u7ec4\uff0c\u8bf7\u6309\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n
      \n
    1. \u786e\u5b9a\u6e90\u6570\u7ec4\u548c\u76ee\u6807\u6570\u7ec4\u3002<\/li>\n
    2. \u6307\u5b9a\u8981\u590d\u5236\u7684\u5143\u7d20\u8303\u56f4\uff0c\u5305\u62ec\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\u3002<\/li>\n
    3. \u8c03\u7528 arraycopy() \u65b9\u6cd5\uff0c\u4f20\u9012\u6e90\u6570\u7ec4\u3001\u6e90\u8d77\u59cb\u7d22\u5f15\u3001\u76ee\u6807\u6570\u7ec4\u3001\u76ee\u6807\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\u3002<\/li>\n<\/ol>\n
      \u793a\u4f8b\u4ee3\u7801<\/strong><\/p>\n
      int[] source = {1, 2, 3, 4, 5};\nint[] destination = new int[7];\n\n\/\/ \u590d\u5236\u524d 3 \u4e2a\u5143\u7d20\u5230\u76ee\u6807\u6570\u7ec4\u4e2d\uff0c\u4ece\u7d22\u5f15 2 \u5f00\u59cb\nSystem.arraycopy(source, 0, destination, 2, 3);\n\n\/\/ \u8f93\u51fa\u76ee\u6807\u6570\u7ec4\nSystem.out.println(Arrays.toString(destination)); \/\/ \u8f93\u51fa\uff1a [0, 0, 1, 2, 3, 0, 0]<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u91cd\u8981\u4e8b\u9879<\/strong><\/p>\n
        \n
      • \u6e90\u6570\u7ec4\u548c\u76ee\u6807\u6570\u7ec4\u53ef\u4ee5\u662f\u540c\u4e00\u6570\u7ec4\u3002<\/li>\n
      • \u5982\u679c\u76ee\u6807\u6570\u7ec4\u8f83\u5c0f\uff0carraycopy() \u65b9\u6cd5\u4f1a\u629b\u51fa\u5f02\u5e38\uff0c\u56e0\u4e3a\u8be5\u65b9\u6cd5\u4e0d\u4f1a\u81ea\u52a8\u8c03\u6574\u76ee\u6807\u6570\u7ec4\u7684\u5927\u5c0f\u3002<\/li>\n
      • \u5982\u679c\u91cd\u53e0\u590d\u5236\uff08\u5373\u6e90\u6570\u7ec4\u548c\u76ee\u6807\u6570\u7ec4\u5728\u590d\u5236\u8fc7\u7a0b\u4e2d\u6709\u6240\u91cd\u53e0\uff09\uff0carraycopy() \u65b9\u6cd5\u7684\u884c\u4e3a\u662f\u672a\u5b9a\u4e49\u7684\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4arraycopy\u600e\u4e48\u590d\u5236\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
        arraycopy() \u65b9\u6cd5\u7528\u4e8e\u4ece\u6e90\u6570\u7ec4\u6307\u5b9a\u8303\u56f4\u590d\u5236\u5143\u7d20\u5230\u76ee\u6807\u6570\u7ec4\u6307\u5b9a\u4f4d\u7f6e\uff0c\u5177\u4f53\u6b65\u9aa4\u5305\u62ec\uff1a\u786e\u5b9a\u6e90\u6570\u7ec4\u548c\u76ee\u6807\u6570\u7ec4\u3002\u6307\u5b9a\u8981\u590d\u5236\u7684\u5143\u7d20\u8303\u56f4\uff08\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\uff09\u3002\u8c03\u7528 arraycopy() \u65b9\u6cd5\uff0c\u4f20\u5165\u6e90\u6570\u7ec4\u3001\u6e90\u8d77\u59cb\u7d22\u5f15\u3001\u76ee\u6807\u6570\u7ec4\u3001\u76ee\u6807\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\u3002 Java \u6570\u7ec4\u4e2d\u7684 arraycopy() \u65b9\u6cd5\uff1a\u6570\u636e\u590d\u5236\u6307\u5357 arraycopy() \u65b9\u6cd5\u7684\u7528\u9014 arraycopy() \u65b9\u6cd5\u5728 Java \u4e2d\u7528\u4e8e\u590d\u5236\u6570\u7ec4\u5143\u7d20\u3002\u5b83\u53ef\u4ee5\u4ece\u6e90\u6570\u7ec4\u590d\u5236\u4e00\u6bb5\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u5230\u76ee\u6807\u6570\u7ec4\u4e2d\u7684\u6307\u5b9a\u4f4d\u7f6e\u3002 arraycopy() \u65b9\u6cd5\u7684\u8bed\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length) \u767b\u5f55\u540e\u590d\u5236 \u53c2\u6570\u8bf4\u660e\uff1a src\uff1a\u6e90\u6570\u7ec4\u5bf9\u8c61\u3002 srcPos\uff1a\u8981\u590d\u5236\u7684\u6e90\u6570\u7ec4\u7684\u8d77\u59cb\u4f4d\u7f6e\uff08\u7d22\u5f15\uff09\u3002 dest\uff1a\u76ee\u6807\u6570\u7ec4\u5bf9\u8c61\u3002 destPos\uff1a\u8981\u5c06\u590d\u5236\u5143\u7d20\u653e\u5165\u76ee\u6807\u6570\u7ec4\u7684\u8d77\u59cb\u4f4d\u7f6e\uff08\u7d22\u5f15\uff09\u3002 length\uff1a\u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf\u3002 \u4f7f\u7528\u65b9\u6cd5 \u8981\u590d\u5236\u6570\u7ec4\uff0c\u8bf7\u6309\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a \u786e\u5b9a\u6e90\u6570\u7ec4\u548c\u76ee\u6807\u6570\u7ec4\u3002 \u6307\u5b9a\u8981\u590d\u5236\u7684\u5143\u7d20\u8303\u56f4\uff0c\u5305\u62ec\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\u3002 \u8c03\u7528 arraycopy() \u65b9\u6cd5\uff0c\u4f20\u9012\u6e90\u6570\u7ec4\u3001\u6e90\u8d77\u59cb\u7d22\u5f15\u3001\u76ee\u6807\u6570\u7ec4\u3001\u76ee\u6807\u8d77\u59cb\u7d22\u5f15\u548c\u5143\u7d20\u6570\u91cf\u3002 \u793a\u4f8b\u4ee3\u7801 int[] source = {1, 2, 3, 4, 5}; int[] destination […]<\/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-65382","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65382","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=65382"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65382\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}