{"id":66615,"date":"2025-05-03T14:24:36","date_gmt":"2025-05-03T06:24:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66615\/"},"modified":"2025-05-03T14:24:36","modified_gmt":"2025-05-03T06:24:36","slug":"java%e7%9a%84%e6%95%b0%e7%bb%84%e5%88%b0%e8%be%be%e4%b8%8a%e9%99%90%e6%80%8e%e4%b9%88%e5%8a%9e-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66615\/","title":{"rendered":"java\u7684\u6570\u7ec4\u5230\u8fbe\u4e0a\u9650\u600e\u4e48\u529e"},"content":{"rendered":"

\n java \u6570\u7ec4\u8fbe\u5230\u4e0a\u9650\u65f6\u6709\u4e24\u79cd\u5904\u7406\u65b9\u5f0f\uff1a\u4f7f\u7528 arrays.copyof() \u6269\u5bb9\u6570\u7ec4\u3002\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u624b\u52a8\u590d\u5236\u5143\u7d20\u3002\u63a8\u8350\u4f7f\u7528 arrays.copyof()\uff0c\u56e0\u4e3a\u5b83\u66f4\u6709\u6548\u548c\u65b9\u4fbf\uff0c\u4f46\u5982\u679c\u5b58\u50a8\u7a7a\u95f4\u6709\u9650\uff0c\u5219\u521b\u5efa\u65b0\u6570\u7ec4\u53ef\u80fd\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002\n<\/p><\/blockquote>\n

\"java\u7684\u6570\u7ec4\u5230\u8fbe\u4e0a\u9650\u600e\u4e48\u529e\u63d2\u56fe\"<\/p>\n

Java \u6570\u7ec4\u5230\u8fbe\u4e0a\u9650\u7684\u5904\u7406<\/strong><\/p>\n

\u5f53 Java \u6570\u7ec4\u8fbe\u5230\u5176\u5bb9\u91cf\u9650\u5236\u65f6\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u5904\u7406\uff1a<\/p>\n

1. \u6269\u5bb9\u6570\u7ec4<\/strong><\/p>\n

Java \u4e2d\u7684\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u4f46\u662f\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u65b0\u6570\u7ec4\u5177\u6709\u66f4\u5927\u7684\u5bb9\u91cf\u3002<\/p>\n

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

int[] originalArray = {1, 2, 3};\nint[] newArray = Arrays.copyOf(originalArray, originalArray.length + 5);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u521b\u5efa\u65b0\u6570\u7ec4<\/strong><\/p>\n
\u4e5f\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5177\u6709\u66f4\u5927\u7684\u5bb9\u91cf\uff0c\u7136\u540e\u5c06\u5143\u7d20\u4ece\u539f\u59cb\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/p>\n
int[] originalArray = {1, 2, 3};\nint[] newArray = new int[originalArray.length + 5];\nSystem.arraycopy(originalArray, 0, newArray, 0, originalArray.length);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u9009\u62e9\u65b9\u6cd5\u7684\u8003\u8651\u56e0\u7d20<\/strong><\/p>\n
\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u4ee5\u4e0b\u56e0\u7d20\uff1a<\/p>\n
    \n
  •  \u6027\u80fd\uff1a<\/strong> Arrays.copyOf() \u65b9\u6cd5\u901a\u5e38\u6bd4\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u624b\u52a8\u590d\u5236\u5143\u7d20\u66f4\u6709\u6548\u3002<\/li>\n
  •  \u5b58\u50a8\u7a7a\u95f4\uff1a<\/strong>\u6269\u5bb9\u6570\u7ec4\u4f1a\u5360\u7528\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u800c\u521b\u5efa\u65b0\u6570\u7ec4\u4e0d\u4f1a\u3002<\/li>\n
  •  \u4fbf\u5229\u6027\uff1a<\/strong> Arrays.copyOf() \u65b9\u6cd5\u66f4\u7b80\u6d01\u65b9\u4fbf\u3002<\/li>\n<\/ul>\n
    \u63a8\u8350\u7684\u65b9\u6cd5<\/strong><\/p>\n
    \u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u63a8\u8350\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u65e2\u6709\u6548\u53c8\u65b9\u4fbf\u3002\u4f46\u662f\uff0c\u5982\u679c\u5b58\u50a8\u7a7a\u95f4\u662f\u4e00\u4e2a\u95ee\u9898\uff0c\u5e76\u4e14\u6570\u7ec4\u7684\u5bb9\u91cf\u53ea\u589e\u52a0\u4e86\u4e00\u5c0f\u90e8\u5206\uff0c\u90a3\u4e48\u521b\u5efa\u65b0\u6570\u7ec4\u53ef\u80fd\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u7684\u6570\u7ec4\u5230\u8fbe\u4e0a\u9650\u600e\u4e48\u529e\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    java \u6570\u7ec4\u8fbe\u5230\u4e0a\u9650\u65f6\u6709\u4e24\u79cd\u5904\u7406\u65b9\u5f0f\uff1a\u4f7f\u7528 arrays.copyof() \u6269\u5bb9\u6570\u7ec4\u3002\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u624b\u52a8\u590d\u5236\u5143\u7d20\u3002\u63a8\u8350\u4f7f\u7528 arrays.copyof()\uff0c\u56e0\u4e3a\u5b83\u66f4\u6709\u6548\u548c\u65b9\u4fbf\uff0c\u4f46\u5982\u679c\u5b58\u50a8\u7a7a\u95f4\u6709\u9650\uff0c\u5219\u521b\u5efa\u65b0\u6570\u7ec4\u53ef\u80fd\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002 Java \u6570\u7ec4\u5230\u8fbe\u4e0a\u9650\u7684\u5904\u7406 \u5f53 Java \u6570\u7ec4\u8fbe\u5230\u5176\u5bb9\u91cf\u9650\u5236\u65f6\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u5904\u7406\uff1a 1. \u6269\u5bb9\u6570\u7ec4 Java \u4e2d\u7684\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u4f46\u662f\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u65b0\u6570\u7ec4\u5177\u6709\u66f4\u5927\u7684\u5bb9\u91cf\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] originalArray = {1, 2, 3}; int[] newArray = Arrays.copyOf(originalArray, originalArray.length + 5); \u767b\u5f55\u540e\u590d\u5236 2. \u521b\u5efa\u65b0\u6570\u7ec4 \u4e5f\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5177\u6709\u66f4\u5927\u7684\u5bb9\u91cf\uff0c\u7136\u540e\u5c06\u5143\u7d20\u4ece\u539f\u59cb\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 int[] originalArray = {1, 2, 3}; int[] newArray = new int[originalArray.length + 5]; System.arraycopy(originalArray, 0, newArray, 0, originalArray.length); \u767b\u5f55\u540e\u590d\u5236 \u9009\u62e9\u65b9\u6cd5\u7684\u8003\u8651\u56e0\u7d20 \u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u4ee5\u4e0b\u56e0\u7d20\uff1a […]<\/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-66615","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66615","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=66615"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66615\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}