{"id":37425,"date":"2024-11-26T08:15:45","date_gmt":"2024-11-26T00:15:45","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37425\/"},"modified":"2024-11-26T08:15:45","modified_gmt":"2024-11-26T00:15:45","slug":"java-%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%b7%bb%e5%8a%a0%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37425\/","title":{"rendered":"java \u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a1. \u57fa\u672c\u7c7b\u578b\u6570\u7ec4\u53ef\u4ee5\u76f4\u63a5\u5206\u914d\u503c\uff1b2. \u5bf9\u8c61\u6570\u7ec4\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u6dfb\u52a0\u5143\u7d20\u3002\u8bf7\u6ce8\u610f\uff0c\u6570\u7ec4\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u5982\u679c\u9700\u8981\u6dfb\u52a0\u5927\u91cf\u5143\u7d20\uff0c\u8bf7\u4f7f\u7528\u96c6\u5408\u7c7b\u578b\uff08\u4f8b\u5982 arraylist \u6216 linkedlist\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111305305355727.jpg\" class=\"aligncenter\" title=\"java \u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20\u63d2\u56fe\" alt=\"java \u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n<p>\u6570\u7ec4\u662f\u4e00\u79cd\u7528\u6765\u5b58\u50a8\u540c\u4e00\u7c7b\u578b\u6570\u636e\u7684\u56fa\u5b9a\u5927\u5c0f\u7684\u96c6\u5408\u3002Java \u4e2d\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n<p><strong>1. \u76f4\u63a5\u5206\u914d<\/strong><\/p>\n<p>\u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff08\u4f8b\u5982 int[]\u3001double[]\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7\u76f4\u63a5\u5206\u914d\u503c\u6765\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = {1, 2, 3};\nnumbers[3] = 4; \/\/ \u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 Arrays.copyOf()<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff08\u4f8b\u5982 String[]\u3001Object[]\uff09\uff0c\u65e0\u6cd5\u76f4\u63a5\u5206\u914d\u503c\u3002\u9700\u8981\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u73b0\u6709\u5143\u7d20\u548c\u8981\u6dfb\u52a0\u7684\u65b0\u5143\u7d20\uff1a<\/p>\n<pre>String[] names = {\"Alice\", \"Bob\"};\nString[] newArr = Arrays.copyOf(names, names.length + 1);\nnewArr[2] = \"Charlie\"; \/\/ \u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 \"Charlie\"<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u8fd9\u610f\u5473\u7740\u65e0\u6cd5\u52a8\u6001\u5730\u66f4\u6539\u6570\u7ec4\u5927\u5c0f\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5927\u91cf\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayList \u6216 LinkedList \u7b49\u96c6\u5408\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava \u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u4e2d\uff0c\u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a1. \u57fa\u672c\u7c7b\u578b\u6570\u7ec4\u53ef\u4ee5\u76f4\u63a5\u5206\u914d\u503c\uff1b2. \u5bf9\u8c61\u6570\u7ec4\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u6dfb\u52a0\u5143\u7d20\u3002\u8bf7\u6ce8\u610f\uff0c\u6570\u7ec4\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u5982\u679c\u9700\u8981\u6dfb\u52a0\u5927\u91cf\u5143\u7d20\uff0c\u8bf7\u4f7f\u7528\u96c6\u5408\u7c7b\u578b\uff08\u4f8b\u5982 arraylist \u6216 linkedlist\uff09\u3002 Java \u4e2d\u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 \u6570\u7ec4\u662f\u4e00\u79cd\u7528\u6765\u5b58\u50a8\u540c\u4e00\u7c7b\u578b\u6570\u636e\u7684\u56fa\u5b9a\u5927\u5c0f\u7684\u96c6\u5408\u3002Java \u4e2d\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\uff1a 1. \u76f4\u63a5\u5206\u914d \u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff08\u4f8b\u5982 int[]\u3001double[]\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7\u76f4\u63a5\u5206\u914d\u503c\u6765\u6dfb\u52a0\u5143\u7d20\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = {1, 2, 3}; numbers[3] = 4; \/\/ \u5411\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 4 \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Arrays.copyOf() \u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff08\u4f8b\u5982 String[]\u3001Object[]\uff09\uff0c\u65e0\u6cd5\u76f4\u63a5\u5206\u914d\u503c\u3002\u9700\u8981\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u73b0\u6709\u5143\u7d20\u548c\u8981\u6dfb\u52a0\u7684\u65b0\u5143\u7d20\uff1a String[] names = {&#8220;Alice&#8221;, &#8220;Bob&#8221;}; String[] newArr = Arrays.copyOf(names, names.length + 1); newArr[2] = &#8220;Charlie&#8221;; \/\/ [&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-37425","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37425","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=37425"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37425\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}