{"id":64644,"date":"2025-05-03T13:53:07","date_gmt":"2025-05-03T05:53:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64644\/"},"modified":"2025-05-03T13:53:07","modified_gmt":"2025-05-03T05:53:07","slug":"java%e6%80%8e%e4%b9%88%e6%8a%8a%e4%b8%80%e7%bb%84%e6%95%b0%e6%94%be%e8%bf%9b%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64644\/","title":{"rendered":"java\u600e\u4e48\u628a\u4e00\u7ec4\u6570\u653e\u8fdb\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5c06\u4e00\u7ec4\u6570\u653e\u5165\u6570\u7ec4\u4e2d\uff1a\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\u4f7f\u7528\u5faa\u73af\u9010\u4e2a\u5143\u7d20\u586b\u5145\u6570\u7ec4\u4f7f\u7528 toarray() \u65b9\u6cd5\u4ece\u5217\u8868\u6216\u96c6\u5408\u4e2d\u8f6c\u6362\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u526f\u672c\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110405031796391.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u628a\u4e00\u7ec4\u6570\u653e\u8fdb\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u628a\u4e00\u7ec4\u6570\u653e\u8fdb\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5c06\u4e00\u7ec4\u6570\u653e\u5165\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5c06\u4e00\u7ec4\u6570\u653e\u5165\u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\u3002\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\uff1a<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8be5\u8bed\u6cd5\u5141\u8bb8\u60a8\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u521d\u59cb\u5316\u5176\u5143\u7d20\u3002<\/p>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u5faa\u73af\u6765\u9010\u4e2a\u5143\u7d20\u5730\u586b\u5145\u6570\u7ec4\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = new int[5];\nfor (int i = 0; i &lt; numbers.length; i++) {\n    numbers[i] = i + 1;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u65b9\u6cd5\u6d89\u53ca\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u7136\u540e\u4f7f\u7528\u5faa\u73af\u5c06\u5143\u7d20\u503c\u5206\u914d\u7ed9\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5df2\u7ecf\u6709\u4e00\u4e2a\u5305\u542b\u6570\u5b57\u7684\u5217\u8868\u6216\u96c6\u5408\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 toArray() \u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a<\/p>\n<pre>List&lt;Integer&gt; numbers = Arrays.asList(1, 2, 3, 4, 5);\nint[] array = numbers.toArray(new int[numbers.size()]);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u65b9\u6cd5\u5c06\u5217\u8868\u4e2d\u7684\u6570\u5b57\u8f6c\u6362\u4e3a\u4e00\u4e2a\u5305\u542b\u76f8\u540c\u6570\u5b57\u7684\u65b0\u6570\u7ec4\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u79cd\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u6570\u7ec4\u526f\u672c\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre>int[] original = {1, 2, 3, 4, 5};\nint[] copy = Arrays.copyOf(original, original.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4 copy\uff0c\u5b83\u662f\u539f\u59cb\u6570\u7ec4 original \u7684\u526f\u672c\u3002<\/p>\n<p>\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u60c5\u51b5\u548c\u60a8\u53ef\u7528\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u628a\u4e00\u7ec4\u6570\u653e\u8fdb\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":"<p>\u5728 java \u4e2d\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5c06\u4e00\u7ec4\u6570\u653e\u5165\u6570\u7ec4\u4e2d\uff1a\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\u4f7f\u7528\u5faa\u73af\u9010\u4e2a\u5143\u7d20\u586b\u5145\u6570\u7ec4\u4f7f\u7528 toarray() \u65b9\u6cd5\u4ece\u5217\u8868\u6216\u96c6\u5408\u4e2d\u8f6c\u6362\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u526f\u672c \u5982\u4f55\u5728 Java \u4e2d\u5c06\u4e00\u7ec4\u6570\u653e\u5165\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u5c06\u4e00\u7ec4\u6570\u653e\u5165\u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\u3002\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5\uff1a int[] numbers = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 \u8be5\u8bed\u6cd5\u5141\u8bb8\u60a8\u5728\u521b\u5efa\u6570\u7ec4\u65f6\u521d\u59cb\u5316\u5176\u5143\u7d20\u3002 \u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u5faa\u73af\u6765\u9010\u4e2a\u5143\u7d20\u5730\u586b\u5145\u6570\u7ec4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[5]; for (int i = 0; i &lt; numbers.length; i++) { numbers[i] = i + 1; } \u767b\u5f55\u540e\u590d\u5236 \u6b64\u65b9\u6cd5\u6d89\u53ca\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u7136\u540e\u4f7f\u7528\u5faa\u73af\u5c06\u5143\u7d20\u503c\u5206\u914d\u7ed9\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u3002 \u5982\u679c\u60a8\u5df2\u7ecf\u6709\u4e00\u4e2a\u5305\u542b\u6570\u5b57\u7684\u5217\u8868\u6216\u96c6\u5408\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 toArray() \u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a List&lt;Integer&gt; numbers = Arrays.asList(1, [&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-64644","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64644","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=64644"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64644\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}