{"id":36589,"date":"2024-11-26T15:21:02","date_gmt":"2024-11-26T07:21:02","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36589\/"},"modified":"2024-11-26T15:21:02","modified_gmt":"2024-11-26T07:21:02","slug":"java%e6%95%b0%e7%bb%84%e7%9a%84%e8%b5%8b%e5%80%bc%e6%96%b9%e6%b3%95%e6%9c%89%e5%93%aa%e4%ba%9b","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36589\/","title":{"rendered":"java\u6570\u7ec4\u7684\u8d4b\u503c\u65b9\u6cd5\u6709\u54ea\u4e9b"},"content":{"rendered":"

\n java \u6570\u7ec4\u8d4b\u503c\u6709\u516d\u79cd\u65b9\u6cd5\uff1a\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3001\u6570\u7ec4\u521d\u59cb\u5316\u3001\u6570\u7ec4\u62f7\u8d1d\u3001\u6570\u7ec4\u514b\u9686\u3001\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u548c\u4f7f\u7528 guava \u5e93\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u7684\u8d4b\u503c\u65b9\u6cd5\u6709\u54ea\u4e9b\u63d2\u56fe\"<\/p>\n

Java\u6570\u7ec4\u7684\u8d4b\u503c\u65b9\u6cd5<\/strong><\/p>\n

Java\u4e2d\u8d4b\u503c\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u4ee5\u4e0b\u662f\u5e38\u89c1\u65b9\u6cd5\uff1a<\/p>\n

\u9010\u4e2a\u5143\u7d20\u8d4b\u503c<\/strong><\/p>\n

\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3002\u4f7f\u7528\u65b9\u62ec\u53f7\u7d22\u5f15\u6570\u7ec4\u5e76\u7ed9\u5b83\u8d4b\u503c\uff1a<\/p>\n

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

int[] arr = new int[3];\narr[0] = 1;\narr[1] = 2;\narr[2] = 3;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6570\u7ec4\u521d\u59cb\u5316<\/strong><\/p>\n
\u5728\u58f0\u660e\u6570\u7ec4\u65f6\uff0c\u53ef\u4ee5\u540c\u65f6\u521d\u59cb\u5316\u5143\u7d20\u3002\u4f7f\u7528\u5927\u62ec\u53f7 {} \u5c06\u5143\u7d20\u503c\u5305\u542b\u5728\u58f0\u660e\u4e2d\uff1a<\/p>\n
int[] arr = {1, 2, 3};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6570\u7ec4\u62f7\u8d1d<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u62f7\u8d1d\u6570\u7ec4\uff0c\u8be5\u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u4ece\u6307\u5b9a\u7d22\u5f15\u5f00\u59cb\u590d\u5236\u5143\u7d20\uff1a<\/p>\n
int[] arr1 = {1, 2, 3};\nint[] arr2 = Arrays.copyOf(arr1, arr1.length);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6570\u7ec4\u514b\u9686<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528 clone() \u65b9\u6cd5\u514b\u9686\u6570\u7ec4\uff0c\u8be5\u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u6240\u6709\u5143\u7d20\uff1a<\/p>\n
int[] arr1 = {1, 2, 3};\nint[] arr2 = arr1.clone();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
System.arraycopy()<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u4ece\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5143\u7d20\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n
int[] arr1 = {1, 2, 3};\nint[] arr2 = new int[arr1.length];\nSystem.arraycopy(arr1, 0, arr2, 0, arr1.length);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7684\u8d4b\u503c\u65b9\u6cd5\u6709\u54ea\u4e9b\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":"
java \u6570\u7ec4\u8d4b\u503c\u6709\u516d\u79cd\u65b9\u6cd5\uff1a\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3001\u6570\u7ec4\u521d\u59cb\u5316\u3001\u6570\u7ec4\u62f7\u8d1d\u3001\u6570\u7ec4\u514b\u9686\u3001\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u548c\u4f7f\u7528 guava \u5e93\u3002 Java\u6570\u7ec4\u7684\u8d4b\u503c\u65b9\u6cd5 Java\u4e2d\u8d4b\u503c\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u4ee5\u4e0b\u662f\u5e38\u89c1\u65b9\u6cd5\uff1a \u9010\u4e2a\u5143\u7d20\u8d4b\u503c \u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3002\u4f7f\u7528\u65b9\u62ec\u53f7\u7d22\u5f15\u6570\u7ec4\u5e76\u7ed9\u5b83\u8d4b\u503c\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = new int[3]; arr[0] = 1; arr[1] = 2; arr[2] = 3; \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u521d\u59cb\u5316 \u5728\u58f0\u660e\u6570\u7ec4\u65f6\uff0c\u53ef\u4ee5\u540c\u65f6\u521d\u59cb\u5316\u5143\u7d20\u3002\u4f7f\u7528\u5927\u62ec\u53f7 {} \u5c06\u5143\u7d20\u503c\u5305\u542b\u5728\u58f0\u660e\u4e2d\uff1a int[] arr = {1, 2, 3}; \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u62f7\u8d1d \u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u62f7\u8d1d\u6570\u7ec4\uff0c\u8be5\u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u4ece\u6307\u5b9a\u7d22\u5f15\u5f00\u59cb\u590d\u5236\u5143\u7d20\uff1a int[] arr1 = {1, 2, 3}; int[] arr2 = Arrays.copyOf(arr1, arr1.length); \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u514b\u9686 \u53ef\u4ee5\u4f7f\u7528 […]<\/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-36589","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36589","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=36589"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36589\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}