{"id":66054,"date":"2025-05-03T11:17:04","date_gmt":"2025-05-03T03:17:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66054\/"},"modified":"2025-05-03T11:17:04","modified_gmt":"2025-05-03T03:17:04","slug":"java%e6%80%8e%e4%b9%88%e5%90%91%e6%95%b0%e7%bb%84%e4%b8%ad%e6%8f%92%e5%85%a5%e5%85%83%e7%b4%a0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66054\/","title":{"rendered":"java\u600e\u4e48\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a1. \u8c03\u6574\u6570\u7ec4\u5927\u5c0f\uff1b2. \u4f7f\u7528 arraylist\u3002arraylist \u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u4ee5\u5bb9\u7eb3\u65b0\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/14\/2024111412492829713.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u8c03\u6574\u6570\u7ec4\u5927\u5c0f<\/strong><\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u521d\u59cb\u5927\u5c0f\u4e3a 3 \u7684\u6570\u7ec4\nint[] arr = new int[3];\n\n\/\/ \u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u66f4\u591a\u5143\u7d20\uff0c\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\narr = Arrays.copyOf(arr, arr.length + 1);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 ArrayList<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>ArrayList \u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u968f\u7740\u5143\u7d20\u7684\u6dfb\u52a0\u800c\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u3002\u8981\u5411 ArrayList \u4e2d\u63d2\u5165\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\uff1a<\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a ArrayList\nList&lt;Integer&gt; list = new ArrayList&lt;&gt;();\n\n\/\/ \u5411\u5217\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\nlist.add(10);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\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\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a1. \u8c03\u6574\u6570\u7ec4\u5927\u5c0f\uff1b2. \u4f7f\u7528 arraylist\u3002arraylist \u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u4ee5\u5bb9\u7eb3\u65b0\u5143\u7d20\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20 \u5728 Java \u4e2d\uff0c\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a 1. \u8c03\u6574\u6570\u7ec4\u5927\u5c0f \/\/ \u521b\u5efa\u4e00\u4e2a\u521d\u59cb\u5927\u5c0f\u4e3a 3 \u7684\u6570\u7ec4 int[] arr = new int[3]; \/\/ \u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u66f4\u591a\u5143\u7d20\uff0c\u8c03\u6574\u6570\u7ec4\u5927\u5c0f arr = Arrays.copyOf(arr, arr.length + 1); \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 ArrayList \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b ArrayList \u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u968f\u7740\u5143\u7d20\u7684\u6dfb\u52a0\u800c\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u3002\u8981\u5411 ArrayList \u4e2d\u63d2\u5165\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\uff1a \/\/ \u521b\u5efa\u4e00\u4e2a ArrayList List&lt;Integer&gt; list = new ArrayList&lt;&gt;(); \/\/ \u5411\u5217\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20 list.add(10); \u767b\u5f55\u540e\u590d\u5236 [&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-66054","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66054","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=66054"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66054\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}