{"id":65810,"date":"2025-05-03T14:47:17","date_gmt":"2025-05-03T06:47:17","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65810\/"},"modified":"2025-05-03T14:47:17","modified_gmt":"2025-05-03T06:47:17","slug":"java%e6%95%b0%e7%bb%84%e7%9a%84%e9%95%bf%e5%ba%a6%e6%80%8e%e4%b9%88%e8%a1%a8%e7%a4%ba-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65810\/","title":{"rendered":"java\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a"},"content":{"rendered":"<blockquote><p>\n  java \u6570\u7ec4\u7684\u957f\u5ea6\u7531 length \u5c5e\u6027\u8868\u793a\uff0c\u5b83\u662f\u6570\u7ec4\u5bf9\u8c61\u7684\u6574\u6570\u5b57\u6bb5\u3002\u83b7\u53d6\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee length \u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u4e0d\u53ef\u4fee\u6539\uff0c\u5176\u503c\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\uff08\u4ece 0 \u5f00\u59cb\u6570\uff09\u3002\u5982\u679c\u6570\u7ec4\u4e3a\u7a7a\uff0clength \u5c5e\u6027\u7684\u503c\u4e3a 0\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111311132455310.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u7684\u957f\u5ea6\u8868\u793a<\/strong><\/p>\n<p>Java \u6570\u7ec4\u7684\u957f\u5ea6\u901a\u8fc7 length \u5c5e\u6027\u8868\u793a\uff0c\u5b83\u662f\u6570\u7ec4\u5bf9\u8c61\u7684\u4e00\u4e2a\u6574\u6570\u5b57\u6bb5\u3002<\/p>\n<p><strong>\u83b7\u5f97\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n<p>\u8981\u83b7\u5f97\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nint length = numbers.length; \/\/ length == 5<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>length \u5c5e\u6027\u662f\u53ea\u8bfb\u7684\uff0c\u5373\u4e0d\u53ef\u4fee\u6539\u3002<\/li>\n<li>length \u5c5e\u6027\u7684\u503c\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\uff0c\u4e0d\u662f\u6570\u7ec4\u7d22\u5f15\u7684\u6700\u5927\u503c\u3002\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u56e0\u6b64\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u662f length &#8211; 1\u3002<\/li>\n<li>\u5982\u679c\u6570\u7ec4\u4e3a\u7a7a\uff08\u6ca1\u6709\u5143\u7d20\uff09\uff0c\u5219 length \u5c5e\u6027\u7684\u503c\u4e3a 0\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a\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>java \u6570\u7ec4\u7684\u957f\u5ea6\u7531 length \u5c5e\u6027\u8868\u793a\uff0c\u5b83\u662f\u6570\u7ec4\u5bf9\u8c61\u7684\u6574\u6570\u5b57\u6bb5\u3002\u83b7\u53d6\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee length \u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u4e0d\u53ef\u4fee\u6539\uff0c\u5176\u503c\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\uff08\u4ece 0 \u5f00\u59cb\u6570\uff09\u3002\u5982\u679c\u6570\u7ec4\u4e3a\u7a7a\uff0clength \u5c5e\u6027\u7684\u503c\u4e3a 0\u3002 Java \u6570\u7ec4\u7684\u957f\u5ea6\u8868\u793a Java \u6570\u7ec4\u7684\u957f\u5ea6\u901a\u8fc7 length \u5c5e\u6027\u8868\u793a\uff0c\u5b83\u662f\u6570\u7ec4\u5bf9\u8c61\u7684\u4e00\u4e2a\u6574\u6570\u5b57\u6bb5\u3002 \u83b7\u5f97\u6570\u7ec4\u957f\u5ea6 \u8981\u83b7\u5f97\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u3002\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = {1, 2, 3, 4, 5}; int length = numbers.length; \/\/ length == 5 \u767b\u5f55\u540e\u590d\u5236 \u6ce8\u610f\u4e8b\u9879 length \u5c5e\u6027\u662f\u53ea\u8bfb\u7684\uff0c\u5373\u4e0d\u53ef\u4fee\u6539\u3002 length \u5c5e\u6027\u7684\u503c\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\uff0c\u4e0d\u662f\u6570\u7ec4\u7d22\u5f15\u7684\u6700\u5927\u503c\u3002\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u56e0\u6b64\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u662f length &#8211; 1\u3002 \u5982\u679c\u6570\u7ec4\u4e3a\u7a7a\uff08\u6ca1\u6709\u5143\u7d20\uff09\uff0c\u5219 length \u5c5e\u6027\u7684\u503c\u4e3a 0\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-65810","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65810","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=65810"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65810\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}