{"id":66457,"date":"2025-05-03T13:42:52","date_gmt":"2025-05-03T05:42:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66457\/"},"modified":"2025-05-03T13:42:52","modified_gmt":"2025-05-03T05:42:52","slug":"java%e4%b8%ad%e4%b8%a4%e4%b8%aa%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%90%88%e5%b9%b6-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66457\/","title":{"rendered":"java\u4e2d\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\u5408\u5e76"},"content":{"rendered":"<blockquote><p>\n  \u5408\u5e76\u4e24\u4e2a java \u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u76f4\u63a5\u5408\u5e76\uff1a\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u62f7\u8d1d\u6570\u7ec4\u5143\u7d20\u3002\u4f7f\u7528 arrays.copyof()\uff1a\u521b\u5efa\u4e00\u4e2a\u5408\u5e76\u540e\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 streams\uff08java 8+\uff09\uff1a\u4f7f\u7528\u7b80\u6d01\u7684 streams \u8bed\u6cd5\u8fdb\u884c\u5408\u5e76\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111604094039673.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\u5408\u5e76\u63d2\u56fe\" alt=\"java\u4e2d\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\u5408\u5e76\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5408\u5e76\u4e24\u4e2a Java \u6570\u7ec4<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u5408\u5e76<\/strong><\/p>\n<ul>\n<li>\n<p>\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u76f4\u63a5\u5c06\u4e00\u4e2a\u6570\u7ec4\u62f7\u8d1d\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002<\/p>\n<pre>int[] arr1 = {1, 2, 3};\nint[] arr2 = {4, 5, 6};\nint[] newArr = new int[arr1.length + arr2.length];\n\nSystem.arraycopy(arr1, 0, newArr, 0, arr1.length);\nSystem.arraycopy(arr2, 0, newArr, arr1.length, arr2.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>\u4f7f\u7528 Arrays.copyOf()<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\n<p>\u8be5\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u4e24\u4e2a\u6570\u7ec4\u5408\u5e76\u540e\u7684\u5143\u7d20\u3002<\/p>\n<pre>int[] newArr = Arrays.copyOf(arr1, arr1.length + arr2.length);\nSystem.arraycopy(arr2, 0, newArr, arr1.length, arr2.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>\u4f7f\u7528 Streams<\/strong><\/p>\n<ul>\n<li>\n<p>\u5bf9\u4e8e Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\uff0c\u53ef\u4ee5\u4f7f\u7528 Streams \u63d0\u4f9b\u7684\u7b80\u6d01\u8bed\u6cd5\u3002<\/p>\n<pre>int[] newArr = Stream.concat(Arrays.stream(arr1), Arrays.stream(arr2)).toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>\u76ee\u6807\u6570\u7ec4\u5fc5\u987b\u6709\u8db3\u591f\u7684\u957f\u5ea6\u6765\u5bb9\u7eb3\u5408\u5e76\u540e\u7684\u5143\u7d20\u3002<\/li>\n<li>\u5408\u5e76\u540e\u7684\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u987a\u5e8f\u5c06\u4e0e\u6e90\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u987a\u5e8f\u76f8\u540c\u3002<\/li>\n<li>\u5982\u679c\u6e90\u6570\u7ec4\u5305\u542b\u539f\u59cb\u6570\u636e\u7c7b\u578b\u7684\u503c\uff0c\u5219\u5fc5\u987b\u4f7f\u7528\u5305\u88c5\u7c7b\u578b\uff08\u4f8b\u5982 Integer\u3001Double\uff09\u6765\u8fdb\u884c\u5408\u5e76\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u4e24\u4e2a\u6570\u7ec4\u600e\u4e48\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 java \u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u76f4\u63a5\u5408\u5e76\uff1a\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u62f7\u8d1d\u6570\u7ec4\u5143\u7d20\u3002\u4f7f\u7528 arrays.copyof()\uff1a\u521b\u5efa\u4e00\u4e2a\u5408\u5e76\u540e\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 streams\uff08java 8+\uff09\uff1a\u4f7f\u7528\u7b80\u6d01\u7684 streams \u8bed\u6cd5\u8fdb\u884c\u5408\u5e76\u3002 \u5982\u4f55\u5408\u5e76\u4e24\u4e2a Java \u6570\u7ec4 \u76f4\u63a5\u5408\u5e76 \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u76f4\u63a5\u5c06\u4e00\u4e2a\u6570\u7ec4\u62f7\u8d1d\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002 int[] arr1 = {1, 2, 3}; int[] arr2 = {4, 5, 6}; int[] newArr = new int[arr1.length + arr2.length]; System.arraycopy(arr1, 0, newArr, 0, arr1.length); System.arraycopy(arr2, 0, newArr, arr1.length, arr2.length); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 Arrays.copyOf() \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u8be5\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u4e24\u4e2a\u6570\u7ec4\u5408\u5e76\u540e\u7684\u5143\u7d20\u3002 int[] newArr = Arrays.copyOf(arr1, [&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-66457","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66457","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=66457"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66457\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}