{"id":34737,"date":"2024-11-26T08:44:02","date_gmt":"2024-11-26T00:44:02","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34737\/"},"modified":"2024-11-26T08:44:02","modified_gmt":"2024-11-26T00:44:02","slug":"java%e6%95%b0%e7%bb%84%e9%95%bf%e5%ba%a6%e6%80%8e%e4%b9%88%e8%a1%a8%e7%a4%ba%e4%bb%80%e4%b9%88%e4%b8%8d%e5%90%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34737\/","title":{"rendered":"java\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u8868\u793a\u4ec0\u4e48\u4e0d\u540c"},"content":{"rendered":"

\n java\u6570\u7ec4\u957f\u5ea6\u53ef\u7528\u4e24\u79cd\u65b9\u5f0f\u8868\u793a\uff1a\u6570\u7ec4\u53d8\u91cf\u7684length\u5c5e\u6027\uff0c\u8868\u793a\u6570\u7ec4\u5143\u7d20\u6570\u91cf\u3002\u6570\u7ec4\u5bf9\u8c61\u7684length\u5b57\u6bb5\uff0c\u884c\u4e3a\u4e0elength\u5c5e\u6027\u76f8\u540c\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u8868\u793a\u4ec0\u4e48\u4e0d\u540c\u63d2\u56fe\"<\/p>\n

Java \u6570\u7ec4\u957f\u5ea6\u7684\u8868\u793a\u65b9\u6cd5<\/strong><\/p>\n

Java\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u65b9\u6cd5\u8868\u793a\uff1a<\/p>\n

1. \u6570\u7ec4\u53d8\u91cf\u7684 length \u5c5e\u6027<\/strong><\/p>\n

\u6bcf\u4e2a\u6570\u7ec4\u53d8\u91cf\u90fd\u5305\u542b\u4e00\u4e2a\u540d\u4e3alength\u7684\u5c5e\u6027\uff0c\u5b83\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

int[] arr = new int[5];\nSystem.out.println(arr.length); \/\/ \u8f93\u51fa\uff1a5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u6570\u7ec4\u5bf9\u8c61\u7684 length \u5b57\u6bb5<\/strong><\/p>\n
\u6570\u7ec4\u5bf9\u8c61\uff08\u5373\u6570\u7ec4\u53d8\u91cf\u7684\u503c\uff09\u4e5f\u5305\u542b\u4e00\u4e2a\u540d\u4e3alength\u7684\u5b57\u6bb5\uff0c\u5b83\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\u3002\u8fd9\u4e0elength\u5c5e\u6027\u7684\u884c\u4e3a\u76f8\u540c\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] arr = new int[5];\nint[] arr2 = arr;\nSystem.out.println(arr2.length); \/\/ \u8f93\u51fa\uff1a5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
<\/strong><\/p>\n
\u8fd9\u4e24\u79cd\u65b9\u6cd5\u5728\u7528\u6cd5\u4e0a\u6ca1\u6709\u533a\u522b\uff0c\u90fd\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528length\u5c5e\u6027\u53ef\u80fd\u66f4\u65b9\u4fbf\uff0c\u4f8b\u5982\uff1a<\/p>\n
    \n
  • \n
    \u5f53\u4f60\u60f3\u8981\u76f4\u63a5\u6bd4\u8f83\u4e24\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6\u65f6\uff0c\u4f7f\u7528length\u5c5e\u6027\u53ef\u4ee5\u66f4\u7b80\u6d01\uff1a<\/p>\n
    if (arr1.length == arr2.length) {\n  \/\/ \u6267\u884c\u64cd\u4f5c\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  • \n
    \u5f53\u4f60\u60f3\u8981\u5728\u5faa\u73af\u4e2d\u8fed\u4ee3\u6570\u7ec4\u65f6\uff0c\u4f7f\u7528length\u5c5e\u6027\u53ef\u4ee5\u66f4\u76f4\u89c2\uff1a<\/p>\n
    for (int i = 0; i < arr.length; i++) {\n  \/\/ \u6267\u884c\u64cd\u4f5c\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u8868\u793a\u4ec0\u4e48\u4e0d\u540c\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":"
    java\u6570\u7ec4\u957f\u5ea6\u53ef\u7528\u4e24\u79cd\u65b9\u5f0f\u8868\u793a\uff1a\u6570\u7ec4\u53d8\u91cf\u7684length\u5c5e\u6027\uff0c\u8868\u793a\u6570\u7ec4\u5143\u7d20\u6570\u91cf\u3002\u6570\u7ec4\u5bf9\u8c61\u7684length\u5b57\u6bb5\uff0c\u884c\u4e3a\u4e0elength\u5c5e\u6027\u76f8\u540c\u3002 Java \u6570\u7ec4\u957f\u5ea6\u7684\u8868\u793a\u65b9\u6cd5 Java\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u65b9\u6cd5\u8868\u793a\uff1a 1. \u6570\u7ec4\u53d8\u91cf\u7684 length \u5c5e\u6027 \u6bcf\u4e2a\u6570\u7ec4\u53d8\u91cf\u90fd\u5305\u542b\u4e00\u4e2a\u540d\u4e3alength\u7684\u5c5e\u6027\uff0c\u5b83\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = new int[5]; System.out.println(arr.length); \/\/ \u8f93\u51fa\uff1a5 \u767b\u5f55\u540e\u590d\u5236 2. \u6570\u7ec4\u5bf9\u8c61\u7684 length \u5b57\u6bb5 \u6570\u7ec4\u5bf9\u8c61\uff08\u5373\u6570\u7ec4\u53d8\u91cf\u7684\u503c\uff09\u4e5f\u5305\u542b\u4e00\u4e2a\u540d\u4e3alength\u7684\u5b57\u6bb5\uff0c\u5b83\u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u6570\u91cf\u3002\u8fd9\u4e0elength\u5c5e\u6027\u7684\u884c\u4e3a\u76f8\u540c\u3002\u4f8b\u5982\uff1a int[] arr = new int[5]; int[] arr2 = arr; System.out.println(arr2.length); \/\/ \u8f93\u51fa\uff1a5 \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u4e24\u79cd\u65b9\u6cd5\u5728\u7528\u6cd5\u4e0a\u6ca1\u6709\u533a\u522b\uff0c\u90fd\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528length\u5c5e\u6027\u53ef\u80fd\u66f4\u65b9\u4fbf\uff0c\u4f8b\u5982\uff1a \u5f53\u4f60\u60f3\u8981\u76f4\u63a5\u6bd4\u8f83\u4e24\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6\u65f6\uff0c\u4f7f\u7528length\u5c5e\u6027\u53ef\u4ee5\u66f4\u7b80\u6d01\uff1a if (arr1.length == arr2.length) { \/\/ \u6267\u884c\u64cd\u4f5c } \u767b\u5f55\u540e\u590d\u5236 \u5f53\u4f60\u60f3\u8981\u5728\u5faa\u73af\u4e2d\u8fed\u4ee3\u6570\u7ec4\u65f6\uff0c\u4f7f\u7528length\u5c5e\u6027\u53ef\u4ee5\u66f4\u76f4\u89c2\uff1a for (int i = 0; i […]<\/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-34737","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34737","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=34737"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34737\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}