{"id":64519,"date":"2025-05-03T13:50:48","date_gmt":"2025-05-03T05:50:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64519\/"},"modified":"2025-05-03T13:50:48","modified_gmt":"2025-05-03T05:50:48","slug":"%e5%9c%a8java%e4%b8%ad%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e6%95%b0%e6%80%8e%e4%b9%88%e5%92%8c-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64519\/","title":{"rendered":"\u5728JAVA\u4e2d\u6570\u7ec4\u4e2d\u7684\u6570\u600e\u4e48\u548c"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u5408\u5e76\u6570\u7ec4\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528 concat() \u65b9\u6cd5\u5c06\u4e24\u4e2a\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002\u521b\u5efa\u4e00\u4e2a\u5bb9\u91cf\u4e3a\u4e24\u4e2a\u6570\u7ec4\u603b\u548c\u7684\u65b0\u6570\u7ec4\uff0c\u5e76\u4f7f\u7528 system.arraycopy() \u590d\u5236\u5143\u7d20\u3002\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e24\u4e2a\u6570\u7ec4\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 guava \u5e93\u5c06\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32\u540e\u5206\u6210\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 stream api \u521b\u5efa\u4e24\u4e2a\u6d41\u5e76\u4f7f\u7528 concat() \u65b9\u6cd5\u5408\u5e76\u5b83\u4eec\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110323185046570.jpg\" class=\"aligncenter\" title=\"\u5728JAVA\u4e2d\u6570\u7ec4\u4e2d\u7684\u6570\u600e\u4e48\u548c\u63d2\u56fe\" alt=\"\u5728JAVA\u4e2d\u6570\u7ec4\u4e2d\u7684\u6570\u600e\u4e48\u548c\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5408\u5e76\u6570\u7ec4\u7684\u51e0\u79cd\u65b9\u6cd5<\/strong><\/p>\n<p><strong>1. concat() \u65b9\u6cd5<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 concat() \u65b9\u6cd5\u5c06\u4e24\u4e2a\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002<\/li>\n<li>\u8bed\u6cd5\uff1aint[] newArray = array1.concat(array2);<\/li>\n<\/ul>\n<p><strong>2. \u5408\u5e76\u4e24\u4e2a\u6570\u7ec4<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u5bb9\u91cf\u4e3a\u4e24\u4e2a\u6570\u7ec4\u603b\u548c\u7684\u65b0\u6570\u7ec4\u3002<\/li>\n<li>\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u7b2c\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\u3002<\/li>\n<li>\u7136\u540e\u5c06\u7b2c\u4e8c\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>3. \u6570\u7ec4\u5de5\u5177\u7c7b<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e24\u4e2a\u6570\u7ec4\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002<\/li>\n<li>\u8bed\u6cd5\uff1aint[] newArray = Arrays.copyOf(array1, array1.length + array2.length);<\/li>\n<\/ul>\n<p><strong>4. Guava \u5e93<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 Guava \u5e93\u4e2d\u7684 Joiner \u7c7b\u5c06\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u5c06\u5176\u5206\u6210\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002<\/li>\n<li>\n<p>\u8bed\u6cd5\uff1a<\/p>\n<pre>Joiner joiner = Joiner.on(\",\").skipNulls(); \nString joined = joiner.join(array1, array2); \nint[] newArray = joined.split(\",\"); <\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>5. Stream API<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 Stream API \u521b\u5efa\u4e24\u4e2a\u6570\u7ec4\u7684\u6d41\uff0c\u7136\u540e\u4f7f\u7528 concat() \u65b9\u6cd5\u5c06\u5b83\u4eec\u5408\u5e76\u4e3a\u4e00\u4e2a\u6d41\u3002<\/li>\n<li>\n<p>\u8bed\u6cd5\uff1a<\/p>\n<pre>Stream&lt;Integer&gt; stream = Stream.concat(Arrays.stream(array1), Arrays.stream(array2));\nint[] newArray = stream.toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5728JAVA\u4e2d\u6570\u7ec4\u4e2d\u7684\u6570\u600e\u4e48\u548c\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\u5408\u5e76\u6570\u7ec4\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528 concat() \u65b9\u6cd5\u5c06\u4e24\u4e2a\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002\u521b\u5efa\u4e00\u4e2a\u5bb9\u91cf\u4e3a\u4e24\u4e2a\u6570\u7ec4\u603b\u548c\u7684\u65b0\u6570\u7ec4\uff0c\u5e76\u4f7f\u7528 system.arraycopy() \u590d\u5236\u5143\u7d20\u3002\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e24\u4e2a\u6570\u7ec4\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 guava \u5e93\u5c06\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32\u540e\u5206\u6210\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 stream api \u521b\u5efa\u4e24\u4e2a\u6d41\u5e76\u4f7f\u7528 concat() \u65b9\u6cd5\u5408\u5e76\u5b83\u4eec\u3002 Java \u4e2d\u5408\u5e76\u6570\u7ec4\u7684\u51e0\u79cd\u65b9\u6cd5 1. concat() \u65b9\u6cd5 \u4f7f\u7528 concat() \u65b9\u6cd5\u5c06\u4e24\u4e2a\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002 \u8bed\u6cd5\uff1aint[] newArray = array1.concat(array2); 2. \u5408\u5e76\u4e24\u4e2a\u6570\u7ec4 \u521b\u5efa\u4e00\u4e2a\u5bb9\u91cf\u4e3a\u4e24\u4e2a\u6570\u7ec4\u603b\u548c\u7684\u65b0\u6570\u7ec4\u3002 \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u7b2c\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\u3002 \u7136\u540e\u5c06\u7b2c\u4e8c\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 3. \u6570\u7ec4\u5de5\u5177\u7c7b \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e24\u4e2a\u6570\u7ec4\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002 \u8bed\u6cd5\uff1aint[] newArray = Arrays.copyOf(array1, array1.length + array2.length); 4. Guava \u5e93 \u4f7f\u7528 Guava \u5e93\u4e2d\u7684 Joiner \u7c7b\u5c06\u6570\u7ec4\u5408\u5e76\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u5c06\u5176\u5206\u6210\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002 [&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-64519","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64519","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=64519"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64519\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64519"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}