{"id":40046,"date":"2024-11-26T15:14:54","date_gmt":"2024-11-26T07:14:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40046\/"},"modified":"2024-11-26T15:14:54","modified_gmt":"2024-11-26T07:14:54","slug":"java%e6%80%8e%e4%b9%88%e5%b0%86%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84%e7%bd%ae%e7%a9%ba","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40046\/","title":{"rendered":"java\u600e\u4e48\u5c06\u4e00\u4e2a\u6570\u7ec4\u7f6e\u7a7a"},"content":{"rendered":"<blockquote><p>\n  \u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06 java \u4e2d\u7684\u6570\u7ec4\u7f6e\u7a7a\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u5c06\u6240\u6709\u5143\u7d20\u7f6e\u4e3a 0\u3002\u4f7f\u7528\u5faa\u73af\u9010\u4e2a\u5c06\u5143\u7d20\u7f6e\u4e3a 0\u3002\u5c06\u6570\u7ec4\u5f15\u7528\u7f6e\u4e3a null\uff0c\u5c06\u5bf9\u8c61\u5f15\u7528\u7f6e\u7a7a\u3002\u91cd\u65b0\u5206\u914d\u6570\u7ec4\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111719092160286.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5c06\u4e00\u4e2a\u6570\u7ec4\u7f6e\u7a7a\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5c06\u4e00\u4e2a\u6570\u7ec4\u7f6e\u7a7a\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5c06 Java \u4e2d\u7684\u6570\u7ec4\u7f6e\u7a7a<\/strong><\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.fill()<\/strong><\/p>\n<pre>int[] array = new int[10];\nArrays.fill(array, 0); \/\/ \u5c06\u6240\u6709\u5143\u7d20\u7f6e\u4e3a 0<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528\u5faa\u73af<\/strong><\/p>\n<pre>int[] array = new int[10];\nfor (int i = 0; i &lt; array.length; i++) {\n    array[i] = 0;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 3\uff1a\u4f7f\u7528 null<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] array = null;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6ce8\u610f\uff1a\u5982\u679c\u6570\u7ec4\u4e2d\u5305\u542b\u5bf9\u8c61\uff0cnull \u4e5f\u4f1a\u5c06\u5176\u5f15\u7528\u7f6e\u7a7a\u3002<\/p>\n<p><strong>\u65b9\u6cd5 4\uff1a\u91cd\u65b0\u5206\u914d\u6570\u7ec4<\/strong><\/p>\n<pre>array = new int[0];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\uff0c\u5e76\u8ba9\u5f15\u7528\u6307\u5411\u5b83\u3002\u65e7\u6570\u7ec4\u4e0d\u4f1a\u88ab\u5783\u573e\u56de\u6536\uff0c\u76f4\u5230\u4e0d\u518d\u5f15\u7528\u5b83\u4e3a\u6b62\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5c06\u4e00\u4e2a\u6570\u7ec4\u7f6e\u7a7a\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>\u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06 java \u4e2d\u7684\u6570\u7ec4\u7f6e\u7a7a\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u5c06\u6240\u6709\u5143\u7d20\u7f6e\u4e3a 0\u3002\u4f7f\u7528\u5faa\u73af\u9010\u4e2a\u5c06\u5143\u7d20\u7f6e\u4e3a 0\u3002\u5c06\u6570\u7ec4\u5f15\u7528\u7f6e\u4e3a null\uff0c\u5c06\u5bf9\u8c61\u5f15\u7528\u7f6e\u7a7a\u3002\u91cd\u65b0\u5206\u914d\u6570\u7ec4\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\u3002 \u5982\u4f55\u5c06 Java \u4e2d\u7684\u6570\u7ec4\u7f6e\u7a7a \u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.fill() int[] array = new int[10]; Arrays.fill(array, 0); \/\/ \u5c06\u6240\u6709\u5143\u7d20\u7f6e\u4e3a 0 \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528\u5faa\u73af int[] array = new int[10]; for (int i = 0; i &lt; array.length; i++) { array[i] = 0; } \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 3\uff1a\u4f7f\u7528 null \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] array = null; [&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-40046","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40046","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=40046"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40046\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}