{"id":64561,"date":"2025-05-03T15:54:41","date_gmt":"2025-05-03T07:54:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64561\/"},"modified":"2025-05-03T15:54:41","modified_gmt":"2025-05-03T07:54:41","slug":"java%e4%ba%8c%e7%bb%b4%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\/64561\/","title":{"rendered":"JAVA\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a"},"content":{"rendered":"<blockquote><p>\n  \u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u7531\u5176\u884c\u6570\u548c\u5217\u6570\u8868\u793a\u3002java \u4e2d\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u884c\u6570\uff0c\u4f7f\u7528 [ ] \u64cd\u4f5c\u7b26\u540e\u8ddf\u7d22\u5f15\u53f7\u83b7\u53d6\u7279\u5b9a\u7ef4\u5ea6\u7684\u957f\u5ea6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110401274923528.jpg\" class=\"aligncenter\" title=\"JAVA\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a\u63d2\u56fe\" alt=\"JAVA\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u600e\u4e48\u8868\u793a\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e8c\u7ef4\u6570\u7ec4\u957f\u5ea6\u7684\u8868\u793a\u65b9\u6cd5<\/strong><\/p>\n<p>\u4e8c\u7ef4\u6570\u7ec4\u662f Java \u4e2d\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u53ef\u4ee5\u5b58\u50a8\u5177\u6709\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u8868\u683c\u6570\u636e\u3002<strong>\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6<\/strong>\u7531\u5176\u884c\u6570\u548c\u5217\u6570\u8868\u793a\u3002<\/p>\n<p><strong>\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6<\/strong><\/p>\n<p>Java \u63d0\u4f9b\u4e86\u4e24\u79cd\u65b9\u6cd5\u6765\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li> <strong>length \u5c5e\u6027\uff1a<\/strong>\u6b64\u5c5e\u6027\u8fd4\u56de\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\u3002<\/li>\n<li> <strong>[ ] \u64cd\u4f5c\u7b26\uff1a<\/strong>\u6b64\u64cd\u4f5c\u7b26\u540e\u8ddf\u7d22\u5f15\u53f7\u8fd4\u56de\u7279\u5b9a\u7ef4\u5ea6\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>int[][] myArray = {\n    {1, 2, 3},\n    {4, 5, 6},\n    {7, 8, 9}\n};\n\n\/\/ \u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u884c\u6570\nint rows = myArray.length; \/\/ \u8f93\u51fa\uff1a3\n\n\/\/ \u4f7f\u7528 [ ] \u64cd\u4f5c\u7b26\u83b7\u53d6\u5217\u6570\nint cols = myArray[0].length; \/\/ \u8f93\u51fa\uff1a3<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u56e0\u6b64\uff0cJava \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u7531\u4e24\u4e2a\u6570\u5b57\u8868\u793a\uff1a<strong>\u884c\u6570\u548c\u5217\u6570<\/strong>\u3002\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u548c [ ] \u64cd\u4f5c\u7b26\u6765\u83b7\u53d6\u8fd9\u4e24\u79cd\u957f\u5ea6\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fJAVA\u4e8c\u7ef4\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>\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u7531\u5176\u884c\u6570\u548c\u5217\u6570\u8868\u793a\u3002java \u4e2d\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u884c\u6570\uff0c\u4f7f\u7528 [ ] \u64cd\u4f5c\u7b26\u540e\u8ddf\u7d22\u5f15\u53f7\u83b7\u53d6\u7279\u5b9a\u7ef4\u5ea6\u7684\u957f\u5ea6\u3002 Java \u4e8c\u7ef4\u6570\u7ec4\u957f\u5ea6\u7684\u8868\u793a\u65b9\u6cd5 \u4e8c\u7ef4\u6570\u7ec4\u662f Java \u4e2d\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u53ef\u4ee5\u5b58\u50a8\u5177\u6709\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u8868\u683c\u6570\u636e\u3002\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\u7531\u5176\u884c\u6570\u548c\u5217\u6570\u8868\u793a\u3002 \u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6 Java \u63d0\u4f9b\u4e86\u4e24\u79cd\u65b9\u6cd5\u6765\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u957f\u5ea6\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b length \u5c5e\u6027\uff1a\u6b64\u5c5e\u6027\u8fd4\u56de\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\u3002 [ ] \u64cd\u4f5c\u7b26\uff1a\u6b64\u64cd\u4f5c\u7b26\u540e\u8ddf\u7d22\u5f15\u53f7\u8fd4\u56de\u7279\u5b9a\u7ef4\u5ea6\u7684\u957f\u5ea6\u3002 \u793a\u4f8b\uff1a int[][] myArray = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; \/\/ \u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u884c\u6570 int rows = myArray.length; \/\/ \u8f93\u51fa\uff1a3 \/\/ \u4f7f\u7528 [ ] \u64cd\u4f5c\u7b26\u83b7\u53d6\u5217\u6570 int cols = myArray[0].length; [&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-64561","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64561","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=64561"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64561\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}