{"id":65673,"date":"2025-05-03T13:13:55","date_gmt":"2025-05-03T05:13:55","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65673\/"},"modified":"2025-05-03T13:13:55","modified_gmt":"2025-05-03T05:13:55","slug":"%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96java%e6%95%b0%e7%bb%84%e7%9a%84%e5%a4%a7%e5%b0%8f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65673\/","title":{"rendered":"\u600e\u4e48\u83b7\u53d6java\u6570\u7ec4\u7684\u5927\u5c0f"},"content":{"rendered":"<blockquote><p>\n  \u8981\u83b7\u53d6 java \u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 length \u5c5e\u6027\uff0c\u8fd9\u662f\u83b7\u53d6\u6570\u7ec4\u5927\u5c0f\u6700\u7b80\u5355\u3001\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u4f7f\u7528 arrays.getlength() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u662f length \u5c5e\u6027\u7684\u5907\u7528\u65b9\u6cd5\uff0c\u53ef\u7528\u4e8e\u68c0\u67e5 null \u6570\u7ec4\u7684\u957f\u5ea6\u6216\u6279\u91cf\u68c0\u67e5\u591a\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111307032776596.jpg\" class=\"aligncenter\" title=\"\u600e\u4e48\u83b7\u53d6java\u6570\u7ec4\u7684\u5927\u5c0f\u63d2\u56fe\" alt=\"\u600e\u4e48\u83b7\u53d6java\u6570\u7ec4\u7684\u5927\u5c0f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u5927\u5c0f<\/strong><\/p>\n<p>\u83b7\u53d6 Java \u6570\u7ec4\u5927\u5c0f\u7684\u5e38\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 length \u5c5e\u6027<\/strong><\/p>\n<p>\u6570\u7ec4\u7684 length \u5c5e\u6027\u8fd4\u56de\u4e86\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u8fd9\u662f\u83b7\u53d6\u6570\u7ec4\u5927\u5c0f\u6700\u7b80\u5355\u3001\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] array = {1, 2, 3};\nint size = array.length; \/\/ size \u7684\u503c\u4e3a 3<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 Arrays.getLength() \u65b9\u6cd5<\/strong><\/p>\n<p>Arrays.getLength \u65b9\u6cd5\u8fd4\u56de\u6307\u5b9a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u8be5\u65b9\u6cd5\u662f length \u5c5e\u6027\u7684\u5907\u7528\u65b9\u6cd5\u3002<\/p>\n<pre>int[] array = {1, 2, 3};\nint size = Arrays.getLength(array); \/\/ size \u7684\u503c\u4e3a 3<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5<\/strong><\/p>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528 length \u5c5e\u6027\u6bd4 Arrays.getLength \u65b9\u6cd5\u66f4\u7b80\u5355\u3001\u66f4\u6709\u6548\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528 Arrays.getLength \u65b9\u6cd5\u53ef\u80fd\u66f4\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u5f53\u60a8\u9700\u8981\u68c0\u67e5 null \u6570\u7ec4\u7684\u957f\u5ea6\u65f6\u3002length \u5c5e\u6027\u4e0d\u80fd\u7528\u4e8e null \u6570\u7ec4\uff0c\u800c Arrays.getLength \u53ef\u4ee5\u3002<\/li>\n<li>\u5f53\u60a8\u9700\u8981\u6279\u91cf\u68c0\u67e5\u591a\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6\u65f6\u3002Arrays.getLength \u53ef\u4ee5\u63a5\u53d7\u4e00\u4e2a\u6570\u7ec4\u6570\u7ec4\uff0c\u5e76\u4e00\u6b21\u6027\u8fd4\u56de\u6240\u6709\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u83b7\u53d6java\u6570\u7ec4\u7684\u5927\u5c0f\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>\u8981\u83b7\u53d6 java \u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 length \u5c5e\u6027\uff0c\u8fd9\u662f\u83b7\u53d6\u6570\u7ec4\u5927\u5c0f\u6700\u7b80\u5355\u3001\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u4f7f\u7528 arrays.getlength() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u662f length \u5c5e\u6027\u7684\u5907\u7528\u65b9\u6cd5\uff0c\u53ef\u7528\u4e8e\u68c0\u67e5 null \u6570\u7ec4\u7684\u957f\u5ea6\u6216\u6279\u91cf\u68c0\u67e5\u591a\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6\u3002 \u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u5927\u5c0f \u83b7\u53d6 Java \u6570\u7ec4\u5927\u5c0f\u7684\u5e38\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a 1. \u4f7f\u7528 length \u5c5e\u6027 \u6570\u7ec4\u7684 length \u5c5e\u6027\u8fd4\u56de\u4e86\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u8fd9\u662f\u83b7\u53d6\u6570\u7ec4\u5927\u5c0f\u6700\u7b80\u5355\u3001\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] array = {1, 2, 3}; int size = array.length; \/\/ size \u7684\u503c\u4e3a 3 \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Arrays.getLength() \u65b9\u6cd5 Arrays.getLength \u65b9\u6cd5\u8fd4\u56de\u6307\u5b9a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u8be5\u65b9\u6cd5\u662f length \u5c5e\u6027\u7684\u5907\u7528\u65b9\u6cd5\u3002 int[] array = {1, 2, 3}; int [&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-65673","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65673","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=65673"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65673\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}