{"id":66924,"date":"2025-05-03T17:22:00","date_gmt":"2025-05-03T09:22:00","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66924\/"},"modified":"2025-05-03T17:22:00","modified_gmt":"2025-05-03T09:22:00","slug":"java%e6%80%8e%e4%b9%88%e5%b0%86%e4%b8%a4%e4%b8%aaint%e6%95%b0%e7%bb%84%e5%90%88%e5%b9%b6-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66924\/","title":{"rendered":"Java\u600e\u4e48\u5c06\u4e24\u4e2aint\u6570\u7ec4\u5408\u5e76"},"content":{"rendered":"<blockquote><p>\n  \u5408\u5e76\u4e24\u4e2a\u6574\u6570\u6570\u7ec4\u7684 java \u65b9\u6cd5\u6709\u4e09\u79cd\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u5143\u7d20\uff1b\u4f7f\u7528 java 8 streams \u5408\u5e76\u6d41\u5e76\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1b\u6216\u4f7f\u7528 apache commons lang \u5e93\u4e2d\u7684 arrayutils.addall() \u65b9\u6cd5\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111719192880379.jpg\" class=\"aligncenter\" title=\"Java\u600e\u4e48\u5c06\u4e24\u4e2aint\u6570\u7ec4\u5408\u5e76\u63d2\u56fe\" alt=\"Java\u600e\u4e48\u5c06\u4e24\u4e2aint\u6570\u7ec4\u5408\u5e76\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5c06\u4e24\u4e2a\u6574\u578b\u6570\u7ec4\u5408\u5e76<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5c06\u4e24\u4e2a int \u6570\u7ec4\u5408\u5e76\u6709\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u4f7f\u7528 Arrays.copyOf()<\/strong><\/p>\n<p>Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u65b0\u6570\u7ec4\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u90e8\u5206\u6216\u5168\u90e8\u5143\u7d20\u3002\u8981\u5408\u5e76\u4e24\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] array1 = {1, 2, 3};\nint[] array2 = {4, 5, 6};\nint[] mergedArray = Arrays.copyOf(array1, array1.length + array2.length);\nSystem.arraycopy(array2, 0, mergedArray, array1.length, array2.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u65b0\u6570\u7ec4 mergedArray \u7684\u5927\u5c0f\u7b49\u4e8e\u4e24\u4e2a\u539f\u59cb\u6570\u7ec4\u7684\u603b\u957f\u5ea6\u3002Arrays.copyOf() \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a array1.length + array2.length\u3002\u7136\u540e\uff0cSystem.arraycopy() \u4ece array2 \u4e2d\u590d\u5236\u5143\u7d20\u5230 mergedArray \u4e2d\uff0c\u4ece\u7d22\u5f15\u4f4d\u7f6e array1.length \u5f00\u59cb\uff0c\u957f\u5ea6\u4e3a array2.length\u3002<\/p>\n<p><strong>\u4f7f\u7528 Java 8 Streams<\/strong><\/p>\n<p>Java 8 \u5f15\u5165\u4e86\u6d41 API\uff0c\u53ef\u4ee5\u66f4\u7b80\u6d01\u5730\u5408\u5e76\u6570\u7ec4\u3002\u4ee5\u4e0b\u4ee3\u7801\u4f7f\u7528\u6d41 API \u5408\u5e76\u4e24\u4e2a\u6570\u7ec4\uff1a<\/p>\n<pre>int[] array1 = {1, 2, 3};\nint[] array2 = {4, 5, 6};\nint[] mergedArray = IntStream.concat(IntStream.of(array1), IntStream.of(array2)).toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0cIntStream.of() \u65b9\u6cd5\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u6d41\u3002IntStream.concat() \u65b9\u6cd5\u5408\u5e76\u4e24\u4e2a\u6d41\u3002toArray() \u65b9\u6cd5\u5c06\u5408\u5e76\u540e\u7684\u6d41\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002<\/p>\n<p><strong>\u4f7f\u7528 Apache Commons Lang<\/strong><\/p>\n<p>Apache Commons Lang \u5e93\u63d0\u4f9b\u4e86 ArrayUtils \u7c7b\uff0c\u5176\u4e2d\u5305\u542b\u51e0\u4e2a\u7528\u4e8e\u5904\u7406\u6570\u7ec4\u7684\u5b9e\u7528\u65b9\u6cd5\u3002\u8981\u5408\u5e76\u4e24\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayUtils.addAll() \u65b9\u6cd5\uff1a<\/p>\n<pre>import org.apache.commons.lang3.ArrayUtils;\n\nint[] array1 = {1, 2, 3};\nint[] array2 = {4, 5, 6};\nint[] mergedArray = ArrayUtils.addAll(array1, array2);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>ArrayUtils.addAll() \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5305\u542b\u4e24\u4e2a\u539f\u59cb\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fJava\u600e\u4e48\u5c06\u4e24\u4e2aint\u6570\u7ec4\u5408\u5e76\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>\u5408\u5e76\u4e24\u4e2a\u6574\u6570\u6570\u7ec4\u7684 java \u65b9\u6cd5\u6709\u4e09\u79cd\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u5143\u7d20\uff1b\u4f7f\u7528 java 8 streams \u5408\u5e76\u6d41\u5e76\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1b\u6216\u4f7f\u7528 apache commons lang \u5e93\u4e2d\u7684 arrayutils.addall() \u65b9\u6cd5\u3002 \u5982\u4f55\u5c06\u4e24\u4e2a\u6574\u578b\u6570\u7ec4\u5408\u5e76 \u5728 Java \u4e2d\uff0c\u5c06\u4e24\u4e2a int \u6570\u7ec4\u5408\u5e76\u6709\u51e0\u79cd\u65b9\u6cd5\uff1a \u4f7f\u7528 Arrays.copyOf() Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u65b0\u6570\u7ec4\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u90e8\u5206\u6216\u5168\u90e8\u5143\u7d20\u3002\u8981\u5408\u5e76\u4e24\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] array1 = {1, 2, 3}; int[] array2 = {4, 5, 6}; int[] mergedArray = Arrays.copyOf(array1, array1.length + array2.length); System.arraycopy(array2, 0, mergedArray, array1.length, array2.length); \u767b\u5f55\u540e\u590d\u5236 \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u65b0\u6570\u7ec4 mergedArray \u7684\u5927\u5c0f\u7b49\u4e8e\u4e24\u4e2a\u539f\u59cb\u6570\u7ec4\u7684\u603b\u957f\u5ea6\u3002Arrays.copyOf() \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a [&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-66924","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66924","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=66924"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66924\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}