{"id":64215,"date":"2025-05-03T09:44:00","date_gmt":"2025-05-03T01:44:00","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64215\/"},"modified":"2025-05-03T09:44:00","modified_gmt":"2025-05-03T01:44:00","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e6%8a%8a%e5%88%97%e8%a1%a8%e8%bd%ac%e5%8c%96%e4%b8%ba%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64215\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u628a\u5217\u8868\u8f6c\u5316\u4e3a\u6570\u7ec4"},"content":{"rendered":"

\n java \u63d0\u4f9b toarray() \u65b9\u6cd5\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u6307\u5b9a\u7c7b\u578b\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u5217\u8868\u6240\u6709\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u600e\u4e48\u628a\u5217\u8868\u8f6c\u5316\u4e3a\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5c06 Java \u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 toArray() \u65b9\u6cd5\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002\u8be5\u65b9\u6cd5\u8fd4\u56de\u5305\u542b\u5217\u8868\u4e2d\u6240\u6709\u5143\u7d20\u7684\u6307\u5b9a\u7c7b\u578b\u6570\u7ec4\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

T[] toArray(T[] a)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \n
  • T \u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u3002<\/li>\n
  • a \u662f\u4e00\u4e2a\u73b0\u6709\u6570\u7ec4\uff0c\u7528\u4e8e\u6307\u5b9a\u6570\u7ec4\u7c7b\u578b\u3002\u5b83\u53ef\u4ee5\u662f\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u6216\u5bf9\u8c61\u6570\u7ec4\u3002<\/li>\n<\/ul>\n
    \u6b65\u9aa4\uff1a<\/strong><\/p>\n
      \n
    1. \u521b\u5efa\u4e00\u4e2a\u6307\u5b9a\u7c7b\u578b\u7684\u65b0\u6570\u7ec4\u3002<\/li>\n
    2. \u8c03\u7528 toArray() \u65b9\u6cd5\uff0c\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002<\/li>\n
    3. \u5c06\u5217\u8868\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ol>\n
      \u793a\u4f8b\uff1a<\/strong><\/p>\n
      import java.util.ArrayList;\nimport java.util.Arrays;\n\npublic class ListToArrayExample {\n\n    public static void main(String[] args) {\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\n        ArrayList<String> names = new ArrayList<>();\n        names.add(\"John\");\n        names.add(\"Jane\");\n\n        \/\/ \u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u6570\u7ec4\n        String[] namesArray = names.toArray(new String[names.size()]);\n\n        \/\/ \u8f93\u51fa\u6570\u7ec4\n        System.out.println(Arrays.toString(namesArray));\n    }\n}<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u8f93\u51fa\uff1a<\/p>\n
      [John, Jane]<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u628a\u5217\u8868\u8f6c\u5316\u4e3a\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      java \u63d0\u4f9b toarray() \u65b9\u6cd5\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u6307\u5b9a\u7c7b\u578b\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u5217\u8868\u6240\u6709\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002 \u5c06 Java \u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 toArray() \u65b9\u6cd5\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002\u8be5\u65b9\u6cd5\u8fd4\u56de\u5305\u542b\u5217\u8868\u4e2d\u6240\u6709\u5143\u7d20\u7684\u6307\u5b9a\u7c7b\u578b\u6570\u7ec4\u3002 \u8bed\u6cd5\uff1a T[] toArray(T[] a) \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b T \u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u3002 a \u662f\u4e00\u4e2a\u73b0\u6709\u6570\u7ec4\uff0c\u7528\u4e8e\u6307\u5b9a\u6570\u7ec4\u7c7b\u578b\u3002\u5b83\u53ef\u4ee5\u662f\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u6216\u5bf9\u8c61\u6570\u7ec4\u3002 \u6b65\u9aa4\uff1a \u521b\u5efa\u4e00\u4e2a\u6307\u5b9a\u7c7b\u578b\u7684\u65b0\u6570\u7ec4\u3002 \u8c03\u7528 toArray() \u65b9\u6cd5\uff0c\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002 \u5c06\u5217\u8868\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 \u793a\u4f8b\uff1a import java.util.ArrayList; import java.util.Arrays; public class ListToArrayExample { public static void main(String[] args) { \/\/ \u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868 ArrayList<String> names = new ArrayList<>(); names.add(“John”); names.add(“Jane”); \/\/ \u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u6570\u7ec4 […]<\/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-64215","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64215","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=64215"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64215\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}