{"id":65631,"date":"2025-05-03T10:33:14","date_gmt":"2025-05-03T02:33:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65631\/"},"modified":"2025-05-03T10:33:14","modified_gmt":"2025-05-03T02:33:14","slug":"java%e6%80%8e%e4%b9%88%e5%b0%86%e6%95%b0%e7%bb%84%e8%bf%9b%e8%a1%8c%e5%a4%87%e4%bb%bd-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65631\/","title":{"rendered":"java\u600e\u4e48\u5c06\u6570\u7ec4\u8fdb\u884c\u5907\u4efd"},"content":{"rendered":"<blockquote><p>\n  \u6709\u56db\u79cd\u5907\u4efd java \u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u526f\u672c\u3002\u4f7f\u7528 system.arraycopy() \u521b\u5efa\u526f\u672c\u3002\u4f7f\u7528 clone() \u521b\u5efa\u72ec\u7acb\u526f\u672c\u3002\u4f7f\u7528 arrays.stream() \u548c map() \u6267\u884c\u6df1\u5ea6\u590d\u5236\uff08\u5982\u679c\u6570\u7ec4\u5305\u542b\u5f15\u7528\u7c7b\u578b\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111305574224890.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5c06\u6570\u7ec4\u8fdb\u884c\u5907\u4efd\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5c06\u6570\u7ec4\u8fdb\u884c\u5907\u4efd\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u5907\u4efd\u6570\u7ec4<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u590d\u5236<\/strong><\/p>\n<p>\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u7684\u65b0\u526f\u672c\uff1a<\/p>\n<pre>int[] original = {1, 2, 3, 4, 5};\nint[] backup = Arrays.copyOf(original, original.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 System.arraycopy<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\uff1a<\/p>\n<pre>int[] original = {1, 2, 3, 4, 5};\nint[] backup = new int[original.length];\nSystem.arraycopy(original, 0, backup, 0, original.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u514b\u9686<\/strong><\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u4e0e\u539f\u59cb\u6570\u7ec4\u5177\u6709\u76f8\u540c\u5185\u5bb9\u4f46\u72ec\u7acb\u4e8e\u5b83\u7684\u65b0\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 clone() \u65b9\u6cd5\uff1a<\/p>\n<pre>int[] original = {1, 2, 3, 4, 5};\nint[] backup = original.clone();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6df1\u5ea6\u590d\u5236<\/strong><\/p>\n<p>\u5982\u679c\u539f\u59cb\u6570\u7ec4\u5305\u542b\u5f15\u7528\u7c7b\u578b\uff08\u4f8b\u5982\u5bf9\u8c61\uff09\uff0c\u5219\u9700\u8981\u6267\u884c\u6df1\u5ea6\u590d\u5236\u4ee5\u786e\u4fdd\u65b0\u6570\u7ec4\u5305\u542b\u539f\u59cb\u6570\u7ec4\u4e2d\u5bf9\u8c61\u7684\u526f\u672c\uff0c\u800c\u4e0d\u662f\u5bf9\u5b83\u4eec\u7684\u5f15\u7528\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 Arrays.stream() \u548c map() \u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff1a<\/p>\n<pre>List&lt;String&gt; original = Arrays.asList(\"A\", \"B\", \"C\");\nList&lt;String&gt; backup = original.stream().map(String::new).toList();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5c06\u6570\u7ec4\u8fdb\u884c\u5907\u4efd\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>\u6709\u56db\u79cd\u5907\u4efd java \u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u526f\u672c\u3002\u4f7f\u7528 system.arraycopy() \u521b\u5efa\u526f\u672c\u3002\u4f7f\u7528 clone() \u521b\u5efa\u72ec\u7acb\u526f\u672c\u3002\u4f7f\u7528 arrays.stream() \u548c map() \u6267\u884c\u6df1\u5ea6\u590d\u5236\uff08\u5982\u679c\u6570\u7ec4\u5305\u542b\u5f15\u7528\u7c7b\u578b\uff09\u3002 \u5982\u4f55\u4f7f\u7528 Java \u5907\u4efd\u6570\u7ec4 \u76f4\u63a5\u590d\u5236 \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u7684\u65b0\u526f\u672c\uff1a int[] original = {1, 2, 3, 4, 5}; int[] backup = Arrays.copyOf(original, original.length); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 System.arraycopy \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\uff1a int[] original = {1, 2, 3, 4, 5}; int[] backup = new int[original.length]; System.arraycopy(original, 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-65631","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65631","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=65631"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65631\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}