{"id":65601,"date":"2025-05-03T16:01:40","date_gmt":"2025-05-03T08:01:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65601\/"},"modified":"2025-05-03T16:01:40","modified_gmt":"2025-05-03T08:01:40","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e5%90%88%e5%b9%b6%e6%95%b0%e7%bb%84%e5%85%83%e7%b4%a0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65601\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u5408\u5e76\u6570\u7ec4\u5143\u7d20"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u6709\u4e94\u79cd\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyof() \u548c system.arraycopy()\u3001\u4f7f\u7528 apache commons lang3 \u7684 arrayutils \u7c7b\u3001\u4f7f\u7528 java 8+ \u7684 stream api\u3001\u4f7f\u7528\u624b\u52a8\u5faa\u73af\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111305005292514.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u600e\u4e48\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u63d2\u56fe\" alt=\"java\u4e2d\u600e\u4e48\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u5728 Java \u4e2d<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u4f7f\u7528 Arrays.copyOf()<\/strong><\/p>\n<p>\u6b64\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u6e90\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u3002\u5b83\u53ef\u4ee5\u4e0e System.arraycopy() \u4e00\u8d77\u4f7f\u7528\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = {4, 5, 6};\n\nint[] merged = Arrays.copyOf(arr1, arr1.length + arr2.length);\nSystem.arraycopy(arr2, 0, merged, arr1.length, arr2.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Apache Commons Lang3<\/strong><\/p>\n<p>Apache Commons Lang3 \u63d0\u4f9b\u4e86 ArrayUtils \u7c7b\uff0c\u5176\u4e2d\u5305\u542b\u5408\u5e76\u6570\u7ec4\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre>import org.apache.commons.lang3.ArrayUtils;\n\nint[] arr1 = {1, 2, 3};\nint[] arr2 = {4, 5, 6};\n\nint[] merged = ArrayUtils.addAll(arr1, arr2);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Java 8+<\/strong><\/p>\n<p>Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\u5f15\u5165\u4e86 Stream API\uff0c\u5b83\u63d0\u4f9b\u4e86\u5408\u5e76\u6570\u7ec4\u7684\u7b80\u6d01\u65b9\u6cd5\uff1a<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = {4, 5, 6};\n\nint[] merged = Stream.of(arr1, arr2).flatMapToInt(IntStream::of).toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528\u5faa\u73af<\/strong><\/p>\n<p>\u8fd9\u662f\u624b\u52a8\u5408\u5e76\u6570\u7ec4\u7684\u6700\u57fa\u672c\u65b9\u6cd5\uff1a<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = {4, 5, 6};\n\nint[] merged = new int[arr1.length + arr2.length];\nint i = 0;\nfor (int num : arr1) {\n    merged[i++] = num;\n}\nfor (int num : arr2) {\n    merged[i++] = num;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u5408\u5e76\u6570\u7ec4\u5143\u7d20\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\u6709\u4e94\u79cd\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyof() \u548c system.arraycopy()\u3001\u4f7f\u7528 apache commons lang3 \u7684 arrayutils \u7c7b\u3001\u4f7f\u7528 java 8+ \u7684 stream api\u3001\u4f7f\u7528\u624b\u52a8\u5faa\u73af\u3002 \u5982\u4f55\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u5728 Java \u4e2d \u5728 Java \u4e2d\uff0c\u5408\u5e76\u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a \u4f7f\u7528 Arrays.copyOf() \u6b64\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u6e90\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u3002\u5b83\u53ef\u4ee5\u4e0e System.arraycopy() \u4e00\u8d77\u4f7f\u7528\uff0c\u5982\u4e0b\u6240\u793a\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr1 = {1, 2, 3}; int[] arr2 = {4, 5, 6}; int[] merged = Arrays.copyOf(arr1, arr1.length + arr2.length); System.arraycopy(arr2, 0, merged, arr1.length, arr2.length); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 [&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-65601","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65601","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=65601"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65601\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}