{"id":64260,"date":"2025-05-03T12:22:16","date_gmt":"2025-05-03T04:22:16","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64260\/"},"modified":"2025-05-03T12:22:16","modified_gmt":"2025-05-03T04:22:16","slug":"%e6%80%8e%e4%b9%88%e5%90%91%e6%95%b0%e7%bb%84%e4%b8%ad%e6%b7%bb%e5%8a%a0%e6%95%b0%e6%8d%aejava-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64260\/","title":{"rendered":"\u600e\u4e48\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636ejava"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u636e\u7684\u65b9\u6cd5\u6709\uff1a\u76f4\u63a5\u8d4b\u503c\u3001\u6570\u7ec4\u5de5\u5177\u7c7b\u3001for \u5faa\u73af\u3001system.arraycopy() \u65b9\u6cd5\u548c\u6dfb\u52a0\u5355\u4e2a\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"\u600e\u4e48\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636ejava\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636e<\/strong><\/p>\n

\u5f15\u8a00\uff1a<\/strong>
\u6570\u7ec4\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u540c\u7c7b\u578b\u6570\u636e\u7684\u5bb9\u5668\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636e\uff1a<\/p>\n

\u76f4\u63a5\u8d4b\u503c\uff1a<\/strong>
\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u65b0\u521b\u5efa\u6216\u5df2\u521d\u59cb\u5316\u7684\u6570\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n

int[] arr = new int[5];\narr[0] = 10;\narr[1] = 20;\narr[2] = 30;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528\u6570\u7ec4\u5de5\u5177\u7c7b\uff08java.util.Arrays\uff09\uff1a<\/strong>
Arrays.fill() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u5143\u7d20\u586b\u5145\u4e3a\u6307\u5b9a\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
int[] arr = new int[5];\nArrays.fill(arr, 10);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528 for \u5faa\u73af\uff1a<\/strong>
\u8fd9\u662f\u4e00\u79cd\u9002\u7528\u4e8e\u4efb\u4f55\u6570\u7ec4\u5927\u5c0f\u7684\u901a\u7528\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] arr = new int[5];\nfor (int i = 0; i < arr.length; i++) {\n    arr[i] = 10 + i;\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\uff1a<\/strong>
\u8be5\u65b9\u6cd5\u5141\u8bb8\u5c06\u53e6\u4e00\u4e2a\u6570\u7ec4\u6216\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u73b0\u6709\u6570\u7ec4\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] arr1 = {10, 20, 30};\nint[] arr2 = new int[5];\nSystem.arraycopy(arr1, 0, arr2, 2, 3);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u4f1a\u5c06 arr1 \u7684\u524d\u4e09\u4e2a\u5143\u7d20\u590d\u5236\u5230 arr2 \u7684\u7d22\u5f15 2 \u53ca\u4ee5\u540e\u7684\u4f4d\u7f6e\u3002<\/p>\n
\u6dfb\u52a0\u5355\u4e2a\u5143\u7d20\uff1a<\/strong>
\u5982\u679c\u8981\u5c06\u5355\u4e2a\u5143\u7d20\u6dfb\u52a0\u5230\u73b0\u6709\u6570\u7ec4\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u66f4\u5927\u7684\u6570\u7ec4\u5e76\u590d\u5236\u65e7\u6570\u7ec4\u7684\u5185\u5bb9\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] oldArr = {10, 20};\nint[] newArr = new int[oldArr.length + 1];\nSystem.arraycopy(oldArr, 0, newArr, 0, oldArr.length);\nnewArr[newArr.length - 1] = 30;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636ejava\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728 java \u4e2d\uff0c\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u636e\u7684\u65b9\u6cd5\u6709\uff1a\u76f4\u63a5\u8d4b\u503c\u3001\u6570\u7ec4\u5de5\u5177\u7c7b\u3001for \u5faa\u73af\u3001system.arraycopy() \u65b9\u6cd5\u548c\u6dfb\u52a0\u5355\u4e2a\u5143\u7d20\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636e \u5f15\u8a00\uff1a\u6570\u7ec4\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u540c\u7c7b\u578b\u6570\u636e\u7684\u5bb9\u5668\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636e\uff1a \u76f4\u63a5\u8d4b\u503c\uff1a\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u65b0\u521b\u5efa\u6216\u5df2\u521d\u59cb\u5316\u7684\u6570\u7ec4\u3002\u4f8b\u5982\uff1a int[] arr = new int[5]; arr[0] = 10; arr[1] = 20; arr[2] = 30; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u6570\u7ec4\u5de5\u5177\u7c7b\uff08java.util.Arrays\uff09\uff1aArrays.fill() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u5143\u7d20\u586b\u5145\u4e3a\u6307\u5b9a\u503c\u3002\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = new int[5]; Arrays.fill(arr, 10); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 for \u5faa\u73af\uff1a\u8fd9\u662f\u4e00\u79cd\u9002\u7528\u4e8e\u4efb\u4f55\u6570\u7ec4\u5927\u5c0f\u7684\u901a\u7528\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a int[] arr = new int[5]; for (int i = 0; i < arr.length; i++) […]<\/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-64260","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64260","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=64260"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64260\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64260"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64260"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}