{"id":64378,"date":"2025-05-03T12:12:46","date_gmt":"2025-05-03T04:12:46","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64378\/"},"modified":"2025-05-03T12:12:46","modified_gmt":"2025-05-03T04:12:46","slug":"java%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84%e9%95%bf%e5%ba%a6%e6%80%8e%e4%b9%88%e7%ae%97-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64378\/","title":{"rendered":"java\u5b57\u7b26\u4e32\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u7b97"},"content":{"rendered":"

\n \u901a\u8fc7\u4f7f\u7528 length \u5c5e\u6027\u8ba1\u7b97 java \u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff1a1. \u58f0\u660e\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff1astring[] myarray = new string[5]\uff1b2. \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1aint length = myarray.length\u3002length \u53d8\u91cf\u5c06\u5305\u542b\u6570\u7ec4 myarray \u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\n<\/p><\/blockquote>\n

\"java\u5b57\u7b26\u4e32\u6570\u7ec4\u957f\u5ea6\u600e\u4e48\u7b97\u63d2\u56fe\"<\/p>\n

Java \u957f\u5ea6\u7684\u8ba1\u7b97\u65b9\u6cd5<\/strong><\/p>\n

\u95ee\u9898\uff1a<\/strong>Java \u4e2d\u5982\u4f55\u8ba1\u7b97\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff1f<\/p>\n

\u7b54\u6848\uff1a<\/strong>\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 length \u5c5e\u6027\u6765\u8ba1\u7b97 Java \u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/p>\n

\u8be6\u7ec6\u8bf4\u660e\uff1a<\/strong><\/p>\n

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

Java \u4e2d\u7684\u5b57\u7b26\u4e32\u6570\u7ec4\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5177\u6709\u4e00\u4e2a length \u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u8981\u8ba1\u7b97\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

    \n
  1. \n

    \u58f0\u660e\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff1a<\/strong><\/p>\n

    String[] myArray = new String[5];<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  2. \n
    \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1a<\/strong><\/p>\n
    int length = myArray.length;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n
    \u53d8\u91cf length \u73b0\u5728\u5c06\u5305\u542b\u6570\u7ec4 myArray \u4e2d\u5143\u7d20\u7684\u6570\u91cf\uff0c\u5728\u672c\u4f8b\u4e2d\u4e3a 5\u3002<\/p>\n
    \u6ce8\u610f\uff1a<\/strong><\/p>\n
      \n
    • length \u5c5e\u6027\u662f\u6570\u7ec4\u7c7b\u578b\u7684\u53ea\u8bfb\u5c5e\u6027\u3002<\/li>\n
    • \u5982\u679c\u6570\u7ec4\u672a\u521d\u59cb\u5316\u6216\u4e3a null\uff0c\u5219 length \u5c5e\u6027\u5c06\u4e3a 0\u3002<\/li>\n
    • \u6570\u7ec4\u7684\u957f\u5ea6\u662f\u56fa\u5b9a\u7684\uff0c\u4e00\u65e6\u521b\u5efa\u5c31\u65e0\u6cd5\u66f4\u6539\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u957f\u5ea6\u600e\u4e48\u7b97\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u901a\u8fc7\u4f7f\u7528 length \u5c5e\u6027\u8ba1\u7b97 java \u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff1a1. \u58f0\u660e\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff1astring[] myarray = new string[5]\uff1b2. \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1aint length = myarray.length\u3002length \u53d8\u91cf\u5c06\u5305\u542b\u6570\u7ec4 myarray \u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002 Java \u957f\u5ea6\u7684\u8ba1\u7b97\u65b9\u6cd5 \u95ee\u9898\uff1aJava \u4e2d\u5982\u4f55\u8ba1\u7b97\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff1f \u7b54\u6848\uff1a\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 length \u5c5e\u6027\u6765\u8ba1\u7b97 Java \u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u3002 \u8be6\u7ec6\u8bf4\u660e\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Java \u4e2d\u7684\u5b57\u7b26\u4e32\u6570\u7ec4\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5177\u6709\u4e00\u4e2a length \u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u8981\u8ba1\u7b97\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a \u58f0\u660e\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff1a String[] myArray = new String[5]; \u767b\u5f55\u540e\u590d\u5236 \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1a int length = myArray.length; \u767b\u5f55\u540e\u590d\u5236 \u53d8\u91cf length \u73b0\u5728\u5c06\u5305\u542b\u6570\u7ec4 myArray \u4e2d\u5143\u7d20\u7684\u6570\u91cf\uff0c\u5728\u672c\u4f8b\u4e2d\u4e3a 5\u3002 \u6ce8\u610f\uff1a length \u5c5e\u6027\u662f\u6570\u7ec4\u7c7b\u578b\u7684\u53ea\u8bfb\u5c5e\u6027\u3002 \u5982\u679c\u6570\u7ec4\u672a\u521d\u59cb\u5316\u6216\u4e3a […]<\/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-64378","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64378","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=64378"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64378\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}