{"id":64278,"date":"2025-05-03T15:59:21","date_gmt":"2025-05-03T07:59:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64278\/"},"modified":"2025-05-03T15:59:21","modified_gmt":"2025-05-03T07:59:21","slug":"java%e6%80%8e%e4%b9%88%e5%9c%a8%e6%95%b0%e7%bb%84%e5%9c%a8%e5%bc%80%e5%a4%b4%e5%8a%a0%e6%95%b0%e5%ad%97-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64278\/","title":{"rendered":"Java\u600e\u4e48\u5728\u6570\u7ec4\u5728\u5f00\u5934\u52a0\u6570\u5b57"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5728\u6570\u7ec4\u5f00\u5934\u6dfb\u52a0\u6570\u5b57\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u73b0\u6709\u6570\u7ec4\u957f\u5ea6\u52a0 1\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u5c06\u73b0\u6709\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u7684\u7b2c\u4e8c\u4e2a\u4f4d\u7f6e\u3002\u5c06\u8981\u6dfb\u52a0\u7684\u6570\u5b57\u653e\u5165\u65b0\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110302521382964.jpg\" class=\"aligncenter\" title=\"Java\u600e\u4e48\u5728\u6570\u7ec4\u5728\u5f00\u5934\u52a0\u6570\u5b57\u63d2\u56fe\" alt=\"Java\u600e\u4e48\u5728\u6570\u7ec4\u5728\u5f00\u5934\u52a0\u6570\u5b57\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5728 Java \u6570\u7ec4\u7684\u5f00\u5934\u6dfb\u52a0\u6570\u5b57<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5728\u6570\u7ec4\u7684\u5f00\u5934\u6dfb\u52a0\u6570\u5b57\u3002<\/p>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u53c2\u6570\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>src &#8211; \u6e90\u6570\u7ec4<\/li>\n<li>srcPos &#8211; \u6e90\u6570\u7ec4\u4e2d\u8981\u590d\u5236\u5143\u7d20\u7684\u8d77\u59cb\u4f4d\u7f6e<\/li>\n<li>dest &#8211; \u76ee\u6807\u6570\u7ec4<\/li>\n<li>destPos &#8211; \u76ee\u6807\u6570\u7ec4\u4e2d\u8981\u63d2\u5165\u5143\u7d20\u7684\u8d77\u59cb\u4f4d\u7f6e<\/li>\n<li>length &#8211; \u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf<\/li>\n<\/ul>\n<p><strong>\u6b65\u9aa4\uff1a<\/strong><\/p>\n<ol>\n<li>\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u73b0\u6709\u6570\u7ec4\u957f\u5ea6\u52a0 1\u3002<\/li>\n<li>\u4f7f\u7528 System.arraycopy() \u5c06\u73b0\u6709\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u7684\u7b2c\u4e8c\u4e2a\u4f4d\u7f6e\u3002<\/li>\n<li>\u5c06\u8981\u6dfb\u52a0\u7684\u6570\u5b57\u653e\u5165\u65b0\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u3002<\/li>\n<\/ol>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\nint[] arr = {1, 2, 3, 4, 5};\n\n\/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u52a0 1\nint[] newArr = new int[arr.length + 1];\n\n\/\/ \u590d\u5236\u73b0\u6709\u6570\u7ec4\u7684\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u7684\u7b2c\u4e8c\u4e2a\u4f4d\u7f6e\nSystem.arraycopy(arr, 0, newArr, 1, arr.length);\n\n\/\/ \u5728\u65b0\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u6dfb\u52a0\u6570\u5b57\nnewArr[0] = 0;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u73b0\u5728\uff0cnewArr \u6570\u7ec4\u5305\u542b\u4e86\u6570\u5b57 0\uff0c\u540e\u8ddf\u73b0\u6709\u7684\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fJava\u600e\u4e48\u5728\u6570\u7ec4\u5728\u5f00\u5934\u52a0\u6570\u5b57\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5728\u6570\u7ec4\u5f00\u5934\u6dfb\u52a0\u6570\u5b57\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u73b0\u6709\u6570\u7ec4\u957f\u5ea6\u52a0 1\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u5c06\u73b0\u6709\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u7684\u7b2c\u4e8c\u4e2a\u4f4d\u7f6e\u3002\u5c06\u8981\u6dfb\u52a0\u7684\u6570\u5b57\u653e\u5165\u65b0\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u3002 \u5728 Java \u6570\u7ec4\u7684\u5f00\u5934\u6dfb\u52a0\u6570\u5b57 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5728\u6570\u7ec4\u7684\u5f00\u5934\u6dfb\u52a0\u6570\u5b57\u3002 \u8bed\u6cd5\uff1a public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length) \u767b\u5f55\u540e\u590d\u5236 \u53c2\u6570\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b src &#8211; \u6e90\u6570\u7ec4 srcPos &#8211; \u6e90\u6570\u7ec4\u4e2d\u8981\u590d\u5236\u5143\u7d20\u7684\u8d77\u59cb\u4f4d\u7f6e dest &#8211; \u76ee\u6807\u6570\u7ec4 destPos &#8211; \u76ee\u6807\u6570\u7ec4\u4e2d\u8981\u63d2\u5165\u5143\u7d20\u7684\u8d77\u59cb\u4f4d\u7f6e length &#8211; \u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf \u6b65\u9aa4\uff1a \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u73b0\u6709\u6570\u7ec4\u957f\u5ea6\u52a0 1\u3002 \u4f7f\u7528 System.arraycopy() \u5c06\u73b0\u6709\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u7684\u7b2c\u4e8c\u4e2a\u4f4d\u7f6e\u3002 \u5c06\u8981\u6dfb\u52a0\u7684\u6570\u5b57\u653e\u5165\u65b0\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u3002 \u793a\u4f8b\uff1a \/\/ [&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-64278","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64278","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=64278"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64278\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}