{"id":37665,"date":"2024-11-26T16:46:26","date_gmt":"2024-11-26T08:46:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37665\/"},"modified":"2024-11-26T16:46:26","modified_gmt":"2024-11-26T08:46:26","slug":"java%e6%80%8e%e4%b9%88%e6%9f%a5%e7%9c%8b%e6%95%b0%e7%bb%84%e7%9a%84%e4%b8%8b%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37665\/","title":{"rendered":"java\u600e\u4e48\u67e5\u770b\u6570\u7ec4\u7684\u4e0b\u8868"},"content":{"rendered":"<blockquote><p>\n  \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7684 length \u5c5e\u6027\u6216 [] \u8fd0\u7b97\u7b26\u67e5\u770b\u6bcf\u4e2a\u5143\u7d20\u7684\u4e0b\u6807\u3002\u901a\u8fc7 length \u5c5e\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\u4e0b\u6807\u8303\u56f4\uff1afor (int i = 0; i <\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111308393388869.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u67e5\u770b\u6570\u7ec4\u7684\u4e0b\u8868\u63d2\u56fe\" alt=\"java\u600e\u4e48\u67e5\u770b\u6570\u7ec4\u7684\u4e0b\u8868\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u67e5\u770b Java \u6570\u7ec4\u7684\u4e0b\u6807<\/strong><\/p>\n<p>Java \u6570\u7ec4\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5b83\u5305\u542b\u6309\u7d22\u5f15\u7684\u6570\u636e\u5143\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u548c [] \u8fd0\u7b97\u7b26\u6765\u67e5\u770b\u6bcf\u4e2a\u5143\u7d20\u7684\u4e0b\u6807\u3002<\/p>\n<p><strong>\u901a\u8fc7 length \u5c5e\u6027:<\/strong><\/p>\n<p>\u6570\u7ec4\u7684 length \u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u83b7\u53d6\u6570\u7ec4\u4e0b\u6807\u7684\u8303\u56f4\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\n\nfor (int i = 0; i &lt; arr.length; i++) {\n    \/\/ \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u5e76\u6253\u5370\u5176\u4e0b\u6807\n    int element = arr[i];\n    System.out.println(\"\u4e0b\u6807 \" + i + \": \" + element);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u6253\u5370\u4ee5\u4e0b\u8f93\u51fa\uff0c\u5176\u4e2d i \u8868\u793a\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\uff0c\u540e\u9762\u662f\u8be5\u4e0b\u6807\u5bf9\u5e94\u7684\u5143\u7d20\u7684\u503c\uff1a<\/p>\n<pre>\u4e0b\u6807 0: 1\n\u4e0b\u6807 1: 2\n\u4e0b\u6807 2: 3\n\u4e0b\u6807 3: 4\n\u4e0b\u6807 4: 5<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u901a\u8fc7 [] \u8fd0\u7b97\u7b26:<\/strong><\/p>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528 [] \u8fd0\u7b97\u7b26\u6765\u76f4\u63a5\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\u3002\u8fd0\u7b97\u7b26\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>arr[index]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d index \u662f\u8981\u83b7\u53d6\u4e0b\u6807\u7684\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>\/\/ \u83b7\u53d6\u7d22\u5f15 2 \u5904\u5143\u7d20\u7684\u4e0b\u6807\nint element = arr[2];\nSystem.out.println(\"\u4e0b\u6807 2 \u5904\u5143\u7d20: \" + element); \/\/ \u8f93\u51fa: 3<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236\n<\/p><\/blockquote>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u67e5\u770b\u6570\u7ec4\u7684\u4e0b\u8868\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":"<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6570\u7ec4\u7684 length \u5c5e\u6027\u6216 [] \u8fd0\u7b97\u7b26\u67e5\u770b\u6bcf\u4e2a\u5143\u7d20\u7684\u4e0b\u6807\u3002\u901a\u8fc7 length \u5c5e\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\u4e0b\u6807\u8303\u56f4\uff1afor (int i = 0; i \u5982\u4f55\u67e5\u770b Java \u6570\u7ec4\u7684\u4e0b\u6807 Java \u6570\u7ec4\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5b83\u5305\u542b\u6309\u7d22\u5f15\u7684\u6570\u636e\u5143\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u548c [] \u8fd0\u7b97\u7b26\u6765\u67e5\u770b\u6bcf\u4e2a\u5143\u7d20\u7684\u4e0b\u6807\u3002 \u901a\u8fc7 length \u5c5e\u6027: \u6570\u7ec4\u7684 length \u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u83b7\u53d6\u6570\u7ec4\u4e0b\u6807\u7684\u8303\u56f4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3, 4, 5}; for (int i = 0; i &lt; arr.length; i++) { \/\/ \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u5e76\u6253\u5370\u5176\u4e0b\u6807 int element = arr[i]; System.out.println(&#8220;\u4e0b\u6807 &#8221; + [&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-37665","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37665","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=37665"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37665\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}