{"id":64555,"date":"2025-05-03T15:56:42","date_gmt":"2025-05-03T07:56:42","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64555\/"},"modified":"2025-05-03T15:56:42","modified_gmt":"2025-05-03T07:56:42","slug":"%e6%80%8e%e4%b9%88%e5%b0%86list%e8%bd%ac%e6%8d%a2%e6%88%90%e6%95%b0%e7%bb%84-java-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64555\/","title":{"rendered":"\u600e\u4e48\u5c06list\u8f6c\u6362\u6210\u6570\u7ec4 java"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u5728 java \u4e2d\u5c06 list \u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a\u4f7f\u7528 toarray() \u65b9\u6cd5\uff1a\u6b64\u65b9\u6cd5\u53ef\u5c06 list \u8f6c\u6362\u4e3a\u4e0e list \u5143\u7d20\u7c7b\u578b\u76f8\u540c\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 toarray(t[] array) \u65b9\u6cd5\uff1a\u6b64\u65b9\u6cd5\u53ef\u5c06 list \u8f6c\u6362\u4e3a\u6307\u5b9a\u7c7b\u578b\u7684\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110401064671469.jpg\" class=\"aligncenter\" title=\"\u600e\u4e48\u5c06list\u8f6c\u6362\u6210\u6570\u7ec4 java\u63d2\u56fe\" alt=\"\u600e\u4e48\u5c06list\u8f6c\u6362\u6210\u6570\u7ec4 java\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5c06 List \u8f6c\u6362\u4e3a\u6570\u7ec4<\/strong><\/p>\n<p>\u60f3\u8981\u5c06 Java \u4e2d\u7684 List \u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 toArray() \u65b9\u6cd5\uff1a<\/strong><\/li>\n<\/ul>\n<p>\u6b64\u65b9\u6cd5\u53ef\u5c06 List \u8f6c\u6362\u4e3a\u4e0e List \u5143\u7d20\u7c7b\u578b\u76f8\u540c\u7684\u65b0\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>Object[] array = list.toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li><strong>\u4f7f\u7528 toArray(T[] array) \u65b9\u6cd5\uff1a<\/strong><\/li>\n<\/ul>\n<p>\u6b64\u65b9\u6cd5\u53ef\u5c06 List \u8f6c\u6362\u4e3a\u6307\u5b9a\u7c7b\u578b\u7684\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>Integer[] intArray = list.toArray(new Integer[list.size()]);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8303\u4f8b\uff1a<\/strong><\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b\u6574\u6570\u7684 List\nList&lt;Integer&gt; list = Arrays.asList(1, 2, 3, 4, 5);\n\n\/\/ \u4f7f\u7528 toArray() \u65b9\u6cd5\u5c06 List \u8f6c\u6362\u4e3a\u6570\u7ec4\nint[] intArray1 = list.toArray();\n\n\/\/ \u4f7f\u7528 toArray(T[] array) \u65b9\u6cd5\u5c06 List \u8f6c\u6362\u4e3a\u6307\u5b9a\u7c7b\u578b\u7684\u6570\u7ec4\nInteger[] intArray2 = list.toArray(new Integer[list.size()]);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528 toArray(T[] array) \u65b9\u6cd5\u65f6\uff0c\u4f20\u5165\u7684\u6570\u7ec4\u957f\u5ea6\u5fc5\u987b\u81f3\u5c11\u4e0e List \u7684\u5927\u5c0f\u76f8\u540c\u3002\u5426\u5219\uff0c\u5c06\u629b\u51fa ArrayIndexOutOfBoundsException \u5f02\u5e38\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u5c06list\u8f6c\u6362\u6210\u6570\u7ec4 java\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>\u53ef\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u5728 java \u4e2d\u5c06 list \u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a\u4f7f\u7528 toarray() \u65b9\u6cd5\uff1a\u6b64\u65b9\u6cd5\u53ef\u5c06 list \u8f6c\u6362\u4e3a\u4e0e list \u5143\u7d20\u7c7b\u578b\u76f8\u540c\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 toarray(t[] array) \u65b9\u6cd5\uff1a\u6b64\u65b9\u6cd5\u53ef\u5c06 list \u8f6c\u6362\u4e3a\u6307\u5b9a\u7c7b\u578b\u7684\u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5c06 List \u8f6c\u6362\u4e3a\u6570\u7ec4 \u60f3\u8981\u5c06 Java \u4e2d\u7684 List \u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a \u4f7f\u7528 toArray() \u65b9\u6cd5\uff1a \u6b64\u65b9\u6cd5\u53ef\u5c06 List \u8f6c\u6362\u4e3a\u4e0e List \u5143\u7d20\u7c7b\u578b\u76f8\u540c\u7684\u65b0\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a Object[] array = list.toArray(); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 toArray(T[] array) \u65b9\u6cd5\uff1a \u6b64\u65b9\u6cd5\u53ef\u5c06 List \u8f6c\u6362\u4e3a\u6307\u5b9a\u7c7b\u578b\u7684\u6570\u7ec4\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Integer[] intArray = list.toArray(new Integer[list.size()]); \u767b\u5f55\u540e\u590d\u5236 \u8303\u4f8b\uff1a \/\/ [&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-64555","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64555","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=64555"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64555\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64555"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64555"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}