{"id":40018,"date":"2024-11-26T16:40:34","date_gmt":"2024-11-26T08:40:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40018\/"},"modified":"2024-11-26T16:40:34","modified_gmt":"2024-11-26T08:40:34","slug":"java%e4%b8%a4%e4%b8%aa%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%bb%ba%e7%ab%8b%e8%b5%b7%e8%81%94%e7%b3%bb","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40018\/","title":{"rendered":"java\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\u5efa\u7acb\u8d77\u8054\u7cfb"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u5efa\u7acb\u4e24\u4e2a\u6570\u7ec4\u4e4b\u95f4\u7684\u8054\u7cfb\u6709\u56db\u79cd\u65b9\u6cd5\uff1a1. \u6570\u7ec4\u5f15\u7528\uff1a\u76f4\u63a5\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f15\u7528\u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u53d8\u91cf\uff0c\u8fd9\u4e24\u4e2a\u53d8\u91cf\u6307\u5411\u540c\u4e00\u5e95\u5c42\u6570\u7ec4\uff1b2. \u6570\u7ec4\u62f7\u8d1d\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u4ece\u539f\u59cb\u6570\u7ec4\u4e2d\u590d\u5236\u5143\u7d20\uff1b3. \u5171\u4eab\u6570\u7ec4\u5143\u7d20\uff1a\u521b\u5efa\u591a\u4e2a\u6570\u7ec4\uff0c\u5b83\u4eec\u7684\u5143\u7d20\u5f15\u7528\u540c\u4e00\u4e2a\u5e95\u5c42\u5bf9\u8c61\uff1b4. \u6269\u5c55\u6570\u7ec4\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u4e24\u4e2a\u6570\u7ec4\u6269\u5c55\u5230\u65b0\u6570\u7ec4\u4e2d\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111718370014454.jpg\" class=\"aligncenter\" title=\"java\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\u5efa\u7acb\u8d77\u8054\u7cfb\u63d2\u56fe\" alt=\"java\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\u5efa\u7acb\u8d77\u8054\u7cfb\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5efa\u7acb Java \u4e2d\u4e24\u4e2a\u6570\u7ec4\u4e4b\u95f4\u7684\u8054\u7cfb<\/strong><\/p>\n<p>\u5728 Java \u4e2d\u5efa\u7acb\u4e24\u4e2a\u6570\u7ec4\u4e4b\u95f4\u7684\u8054\u7cfb\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u6570\u7ec4\u5f15\u7528<\/strong><\/p>\n<p>\u76f4\u63a5\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f15\u7528\u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u53d8\u91cf\u3002\u8fd9\u6837\uff0c\u4e24\u4e2a\u53d8\u91cf\u90fd\u6307\u5411\u540c\u4e00\u5e95\u5c42\u6570\u7ec4\uff0c\u4efb\u4f55\u5bf9\u4e00\u4e2a\u6570\u7ec4\u7684\u4fee\u6539\u90fd\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = arr1;\n\narr1[0] = 4;\nSystem.out.println(arr2[0]); \/\/ \u8f93\u51fa 4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u6570\u7ec4\u62f7\u8d1d<\/strong><\/p>\n<p>\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u4ece\u539f\u59cb\u6570\u7ec4\u4e2d\u590d\u5236\u5143\u7d20\u3002\u65b0\u7684\u6570\u7ec4\u5c06\u5177\u6709\u81ea\u5df1\u7684\u5e95\u5c42\u5b58\u50a8\u7a7a\u95f4\uff0c\u5e76\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u526f\u672c\u3002<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = new int[arr1.length];\n\nSystem.arraycopy(arr1, 0, arr2, 0, arr1.length);\n\narr1[0] = 4;\nSystem.out.println(arr2[0]); \/\/ \u8f93\u51fa 1<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u5171\u4eab\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n<p>\u521b\u5efa\u4e24\u4e2a\u6570\u7ec4\uff0c\u5b83\u4eec\u7684\u5143\u7d20\u5f15\u7528\u540c\u4e00\u5e95\u5c42\u5bf9\u8c61\u3002\u8fd9\u901a\u5e38\u7528\u4e8e\u4ee3\u8868 Java \u4e2d\u591a\u7ef4\u6570\u7ec4\u7684\u6bcf\u4e00\u7ef4\u3002<\/p>\n<pre>int[][] arr = {{1, 2, 3}, {4, 5, 6}};\nint[] row1 = arr[0];\nint[] row2 = arr[1];\n\nrow1[0] = 4;\nSystem.out.println(row2[0]); \/\/ \u8f93\u51fa 4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u6269\u5c55\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u7684\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\u3002\u4e3a\u4e86\u5efa\u7acb\u4e24\u4e2a\u6570\u7ec4\u4e4b\u95f4\u7684\u8054\u7cfb\uff0c\u53ef\u4ee5\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u8fd9\u4e24\u4e2a\u6570\u7ec4\u6269\u5c55\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = {4, 5, 6};\nint[] arr3 = new int[arr1.length + arr2.length];\n\nSystem.arraycopy(arr1, 0, arr3, 0, arr1.length);\nSystem.arraycopy(arr2, 0, arr3, arr1.length, arr2.length);\n\nSystem.out.println(Arrays.toString(arr3)); \/\/ \u8f93\u51fa [1, 2, 3, 4, 5, 6]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\u5efa\u7acb\u8d77\u8054\u7cfb\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\uff0c\u5efa\u7acb\u4e24\u4e2a\u6570\u7ec4\u4e4b\u95f4\u7684\u8054\u7cfb\u6709\u56db\u79cd\u65b9\u6cd5\uff1a1. \u6570\u7ec4\u5f15\u7528\uff1a\u76f4\u63a5\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f15\u7528\u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u53d8\u91cf\uff0c\u8fd9\u4e24\u4e2a\u53d8\u91cf\u6307\u5411\u540c\u4e00\u5e95\u5c42\u6570\u7ec4\uff1b2. \u6570\u7ec4\u62f7\u8d1d\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u4ece\u539f\u59cb\u6570\u7ec4\u4e2d\u590d\u5236\u5143\u7d20\uff1b3. \u5171\u4eab\u6570\u7ec4\u5143\u7d20\uff1a\u521b\u5efa\u591a\u4e2a\u6570\u7ec4\uff0c\u5b83\u4eec\u7684\u5143\u7d20\u5f15\u7528\u540c\u4e00\u4e2a\u5e95\u5c42\u5bf9\u8c61\uff1b4. \u6269\u5c55\u6570\u7ec4\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u4e24\u4e2a\u6570\u7ec4\u6269\u5c55\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 \u5982\u4f55\u5efa\u7acb Java \u4e2d\u4e24\u4e2a\u6570\u7ec4\u4e4b\u95f4\u7684\u8054\u7cfb \u5728 Java \u4e2d\u5efa\u7acb\u4e24\u4e2a\u6570\u7ec4\u4e4b\u95f4\u7684\u8054\u7cfb\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a 1. \u6570\u7ec4\u5f15\u7528 \u76f4\u63a5\u5c06\u4e00\u4e2a\u6570\u7ec4\u5f15\u7528\u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u53d8\u91cf\u3002\u8fd9\u6837\uff0c\u4e24\u4e2a\u53d8\u91cf\u90fd\u6307\u5411\u540c\u4e00\u5e95\u5c42\u6570\u7ec4\uff0c\u4efb\u4f55\u5bf9\u4e00\u4e2a\u6570\u7ec4\u7684\u4fee\u6539\u90fd\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr1 = {1, 2, 3}; int[] arr2 = arr1; arr1[0] = 4; System.out.println(arr2[0]); \/\/ \u8f93\u51fa 4 \u767b\u5f55\u540e\u590d\u5236 2. \u6570\u7ec4\u62f7\u8d1d \u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u4ece\u539f\u59cb\u6570\u7ec4\u4e2d\u590d\u5236\u5143\u7d20\u3002\u65b0\u7684\u6570\u7ec4\u5c06\u5177\u6709\u81ea\u5df1\u7684\u5e95\u5c42\u5b58\u50a8\u7a7a\u95f4\uff0c\u5e76\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u526f\u672c\u3002 int[] arr1 = {1, 2, 3}; int[] arr2 = new int[arr1.length]; System.arraycopy(arr1, 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-40018","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40018","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=40018"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40018\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}