{"id":65927,"date":"2025-05-03T16:33:41","date_gmt":"2025-05-03T08:33:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65927\/"},"modified":"2025-05-03T16:33:41","modified_gmt":"2025-05-03T08:33:41","slug":"java%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%a4%8d%e5%88%b6-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65927\/","title":{"rendered":"java\u5b57\u7b26\u4e32\u6570\u7ec4\u600e\u4e48\u590d\u5236"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u590d\u5236\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\uff1asystem.arraycopy()\u514b\u9686for \u5faa\u73afstreamapache commons lang3\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111316154218970.jpg\" class=\"aligncenter\" title=\"java\u5b57\u7b26\u4e32\u6570\u7ec4\u600e\u4e48\u590d\u5236\u63d2\u56fe\" alt=\"java\u5b57\u7b26\u4e32\u6570\u7ec4\u600e\u4e48\u590d\u5236\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u7684\u590d\u5236\u65b9\u6cd5<\/strong><\/p>\n<p>\u8981\u590d\u5236 Java \u4e2d\u7684\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = new int[arr1.length];\nSystem.arraycopy(arr1, 0, arr2, 0, arr1.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u514b\u9686<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = arr1.clone();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. for \u5faa\u73af<\/strong><\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = new int[arr1.length];\nfor (int i = 0; i &lt; arr1.length; i++) {\n    arr2[i] = arr1[i];\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. Stream<\/strong><\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = Arrays.stream(arr1).toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. Apache Commons Lang3<\/strong><\/p>\n<pre>import org.apache.commons.lang3.ArrayUtils;\n\nint[] arr1 = {1, 2, 3};\nint[] arr2 = ArrayUtils.clone(arr1);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>System.arraycopy() \u548c\u514b\u9686\u65b9\u6cd5\u521b\u5efa\u7684\u662f\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u800c for \u5faa\u73af\u548c Stream \u65b9\u6cd5\u521b\u5efa\u7684\u662f\u4e00\u4e2a\u6307\u5411\u539f\u59cb\u6570\u7ec4\u7684\u5f15\u7528\u3002<\/li>\n<li>System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u590d\u5236\u4efb\u4f55\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u800c\u514b\u9686\u65b9\u6cd5\u53ea\u80fd\u590d\u5236\u53ef\u514b\u9686\u5bf9\u8c61\u7684\u6570\u7ec4\u3002<\/li>\n<li>Apache Commons Lang3 \u5e93\u9700\u8981\u624b\u52a8\u4f9d\u8d56\u624d\u80fd\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u590d\u5236\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>java \u4e2d\u590d\u5236\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\uff1asystem.arraycopy()\u514b\u9686for \u5faa\u73afstreamapache commons lang3 Java \u7684\u590d\u5236\u65b9\u6cd5 \u8981\u590d\u5236 Java \u4e2d\u7684\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a 1. System.arraycopy() \u65b9\u6cd5 int[] arr1 = {1, 2, 3}; int[] arr2 = new int[arr1.length]; System.arraycopy(arr1, 0, arr2, 0, arr1.length); \u767b\u5f55\u540e\u590d\u5236 2. \u514b\u9686 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr1 = {1, 2, 3}; int[] arr2 = arr1.clone(); \u767b\u5f55\u540e\u590d\u5236 3. for \u5faa\u73af int[] arr1 = {1, 2, 3}; int[] arr2 [&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-65927","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65927","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=65927"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65927\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}