{"id":37253,"date":"2024-11-26T15:21:13","date_gmt":"2024-11-26T07:21:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37253\/"},"modified":"2024-11-26T15:21:13","modified_gmt":"2024-11-26T07:21:13","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%be%97%e5%88%b0%e5%85%83%e7%b4%a0%e4%b8%aa%e6%95%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37253\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u5f97\u5230\u5143\u7d20\u4e2a\u6570"},"content":{"rendered":"

\n java\u6570\u7ec4\u7684\u5143\u7d20\u4e2a\u6570\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u5176length\u5c5e\u6027\u6765\u83b7\u53d6\u3002length\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5b9e\u9645\u5b58\u50a8\u7684\u5143\u7d20\u4e2a\u6570\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u5f97\u5230\u5143\u7d20\u4e2a\u6570\u63d2\u56fe\"<\/p>\n

Java\u6570\u7ec4\u83b7\u53d6\u5143\u7d20\u4e2a\u6570<\/strong><\/p>\n

Java\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u5bf9\u8c61\u96c6\u5408\uff0c\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7684length\u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

int length = array.length;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
int[] numbers = {1, 2, 3, 4, 5};\nint elementsCount = numbers.length;\n\nSystem.out.println(\"\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\uff1a\" + elementsCount);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8f93\u51fa\uff1a<\/p>\n
\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\uff1a5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8bf4\u660e\uff1a<\/strong><\/p>\n
    \n
  • length\u5c5e\u6027\u662f\u6570\u7ec4\u5bf9\u8c61\u7684\u4e00\u4e2a\u6210\u5458\u53d8\u91cf\uff0c\u5b83\u8fd4\u56de\u6570\u7ec4\u4e2d\u5b9e\u9645\u5b58\u50a8\u7684\u5143\u7d20\u4e2a\u6570\u3002<\/li>\n
  • \u6570\u7ec4\u7684length\u5c5e\u6027\u662f\u53ea\u8bfb\u7684\uff0c\u4e0d\u80fd\u88ab\u4fee\u6539\u3002<\/li>\n
  • \u5982\u679c\u6570\u7ec4\u4e3a\u7a7a\uff08\u5c1a\u672a\u521d\u59cb\u5316\u6216\u6240\u6709\u5143\u7d20\u90fd\u4e3anull\uff09\uff0clength\u5c5e\u6027\u5c06\u8fd4\u56de0\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u5f97\u5230\u5143\u7d20\u4e2a\u6570\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\u7684\u5143\u7d20\u4e2a\u6570\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u5176length\u5c5e\u6027\u6765\u83b7\u53d6\u3002length\u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5b9e\u9645\u5b58\u50a8\u7684\u5143\u7d20\u4e2a\u6570\u3002 Java\u6570\u7ec4\u83b7\u53d6\u5143\u7d20\u4e2a\u6570 Java\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u5bf9\u8c61\u96c6\u5408\uff0c\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7684length\u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\u3002 \u8bed\u6cd5\uff1a int length = array.length; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = {1, 2, 3, 4, 5}; int elementsCount = numbers.length; System.out.println(“\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\uff1a” + elementsCount); \u767b\u5f55\u540e\u590d\u5236 \u8f93\u51fa\uff1a \u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\uff1a5 \u767b\u5f55\u540e\u590d\u5236 \u8bf4\u660e\uff1a length\u5c5e\u6027\u662f\u6570\u7ec4\u5bf9\u8c61\u7684\u4e00\u4e2a\u6210\u5458\u53d8\u91cf\uff0c\u5b83\u8fd4\u56de\u6570\u7ec4\u4e2d\u5b9e\u9645\u5b58\u50a8\u7684\u5143\u7d20\u4e2a\u6570\u3002 \u6570\u7ec4\u7684length\u5c5e\u6027\u662f\u53ea\u8bfb\u7684\uff0c\u4e0d\u80fd\u88ab\u4fee\u6539\u3002 \u5982\u679c\u6570\u7ec4\u4e3a\u7a7a\uff08\u5c1a\u672a\u521d\u59cb\u5316\u6216\u6240\u6709\u5143\u7d20\u90fd\u4e3anull\uff09\uff0clength\u5c5e\u6027\u5c06\u8fd4\u56de0\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u5f97\u5230\u5143\u7d20\u4e2a\u6570\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\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-37253","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37253","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=37253"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37253\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}