{"id":65285,"date":"2025-05-03T12:03:39","date_gmt":"2025-05-03T04:03:39","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65285\/"},"modified":"2025-05-03T12:03:39","modified_gmt":"2025-05-03T04:03:39","slug":"java%e6%80%8e%e4%b9%88%e5%b0%86%e6%95%b0%e7%bb%84%e6%b8%85%e7%a9%ba-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65285\/","title":{"rendered":"Java\u600e\u4e48\u5c06\u6570\u7ec4\u6e05\u7a7a"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u6e05\u7a7a\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u5c06\u6240\u6709\u5143\u7d20\u66ff\u6362\u4e3a\u6307\u5b9a\u503c\uff08\u4f8b\u5982 0\uff09\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u5c06\u957f\u5ea6\u4e3a\u96f6\u7684\u6570\u7ec4\u590d\u5236\u5230\u539f\u59cb\u6570\u7ec4\u4e2d\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111218272969839.jpg\" class=\"aligncenter\" title=\"Java\u600e\u4e48\u5c06\u6570\u7ec4\u6e05\u7a7a\u63d2\u56fe\" alt=\"Java\u600e\u4e48\u5c06\u6570\u7ec4\u6e05\u7a7a\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u7528 Java \u6e05\u7a7a\u6570\u7ec4\uff1f<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6e05\u7a7a\u6570\u7ec4\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n<p>Arrays.fill() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u66ff\u6362\u4e3a\u6307\u5b9a\u7684\u503c\u3002\u8981\u6e05\u7a7a\u6570\u7ec4\uff0c\u53ef\u4ee5\u5c06\u503c\u8bbe\u7f6e\u4e3a 0\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nArrays.fill(arr, 0);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6267\u884c\u6b64\u64cd\u4f5c\u540e\uff0carr \u6570\u7ec4\u5c06\u5305\u542b\u4e94\u4e2a 0\u3002<\/p>\n<p><strong>2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n<p>System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u901a\u8fc7\u5c06\u957f\u5ea6\u4e3a\u96f6\u7684\u6570\u7ec4\u590d\u5236\u5230\u539f\u59cb\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e05\u7a7a\u539f\u59cb\u6570\u7ec4\uff1a<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nint[] emptyArray = new int[0];\nSystem.arraycopy(emptyArray, 0, arr, 0, 0);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6267\u884c\u6b64\u64cd\u4f5c\u540e\uff0carr \u6570\u7ec4\u5c06\u6e05\u7a7a\u3002<\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>Arrays.fill() \u65b9\u6cd5\u4e0d\u4f1a\u6539\u53d8\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u800c System.arraycopy() \u65b9\u6cd5\u4f1a\u3002<\/li>\n<li>\u5982\u679c\u6570\u7ec4\u5305\u542b\u5bf9\u8c61\u5f15\u7528\uff0c\u8fd9\u4e9b\u5f15\u7528\u4e0d\u4f1a\u88ab\u6e05\u9664\uff0c\u53ea\u6709\u5f15\u7528\u6307\u5411\u7684\u5bf9\u8c61\u7684\u503c\u624d\u4f1a\u88ab\u8986\u76d6\u3002<\/li>\n<li>\u5982\u679c\u6570\u7ec4\u662f\u591a\u7ef4\u7684\uff0c\u5219\u9700\u8981\u5bf9\u6bcf\u4e2a\u7ef4\u5ea6\u90fd\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\u6216 System.arraycopy() \u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fJava\u600e\u4e48\u5c06\u6570\u7ec4\u6e05\u7a7a\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\u6e05\u7a7a\u6570\u7ec4\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u5c06\u6240\u6709\u5143\u7d20\u66ff\u6362\u4e3a\u6307\u5b9a\u503c\uff08\u4f8b\u5982 0\uff09\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\u5c06\u957f\u5ea6\u4e3a\u96f6\u7684\u6570\u7ec4\u590d\u5236\u5230\u539f\u59cb\u6570\u7ec4\u4e2d\u3002 \u5982\u4f55\u7528 Java \u6e05\u7a7a\u6570\u7ec4\uff1f \u5728 Java \u4e2d\uff0c\u6e05\u7a7a\u6570\u7ec4\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5 Arrays.fill() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u66ff\u6362\u4e3a\u6307\u5b9a\u7684\u503c\u3002\u8981\u6e05\u7a7a\u6570\u7ec4\uff0c\u53ef\u4ee5\u5c06\u503c\u8bbe\u7f6e\u4e3a 0\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3, 4, 5}; Arrays.fill(arr, 0); \u767b\u5f55\u540e\u590d\u5236 \u6267\u884c\u6b64\u64cd\u4f5c\u540e\uff0carr \u6570\u7ec4\u5c06\u5305\u542b\u4e94\u4e2a 0\u3002 2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u901a\u8fc7\u5c06\u957f\u5ea6\u4e3a\u96f6\u7684\u6570\u7ec4\u590d\u5236\u5230\u539f\u59cb\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e05\u7a7a\u539f\u59cb\u6570\u7ec4\uff1a int[] arr = {1, 2, 3, 4, 5}; int[] emptyArray = new int[0]; [&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-65285","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65285","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=65285"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65285\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}