{"id":38660,"date":"2024-11-26T16:17:33","date_gmt":"2024-11-26T08:17:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38660\/"},"modified":"2024-11-26T16:17:33","modified_gmt":"2024-11-26T08:17:33","slug":"java%e6%80%8e%e4%b9%88%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aa%e7%b1%bb%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38660\/","title":{"rendered":"java\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u7c7b\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u521b\u5efa java \u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u58f0\u660e\u6570\u7ec4\u5e76\u5206\u914d\u7a7a\u95f4\u58f0\u660e\u6570\u7ec4\u5e76\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf\u6570\u7ec4\u5c5e\u6027\uff1a\u957f\u5ea6\u3001\u5143\u7d20\u7c7b\u578b\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a\u4f7f\u7528\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u5143\u7d20\uff1a\u4f7f\u7528\u7d22\u5f15\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\uff1a\u4f7f\u7528\u5d4c\u5957\u65b9\u62ec\u53f7\u904d\u5386\u6570\u7ec4\u5143\u7d20\uff1a\u4f7f\u7528 for-each \u5faa\u73af\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/15\/2024111504365140898.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u7c7b\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u7c7b\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u7528 Java \u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n<p>\u7528 Java \u521b\u5efa\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u51e0\u79cd\uff1a<\/p>\n<p><strong>1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u58f0\u660e\u6570\u7ec4\u5e76\u4f7f\u7528 new \u5173\u952e\u5b57\u5206\u914d\u7a7a\u95f4<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = new int[5];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u58f0\u660e\u6570\u7ec4\u5e76\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf<\/strong><\/p>\n<pre>int[] numbers = new int[]{1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6570\u7ec4\u7684\u5c5e\u6027\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>\u957f\u5ea6\uff1a<\/strong>\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u3002<\/li>\n<li> <strong>\u5143\u7d20\u7c7b\u578b\uff1a<\/strong>\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f7f\u7528 getClass() \u65b9\u6cd5\u83b7\u53d6\u3002<\/li>\n<\/ul>\n<p><strong>\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a<\/strong><\/p>\n<p>\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u7d22\u5f15\u4ece 0 \u5f00\u59cb\u3002<\/p>\n<pre>int firstElement = numbers[0];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4fee\u6539\u6570\u7ec4\u5143\u7d20\uff1a<\/strong><\/p>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n<pre>numbers[0] = 10;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\uff1a<\/strong><\/p>\n<p>Java \u652f\u6301\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>int[][] matrix = new int[3][4];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u4e2a\u6570\u7ec4\u662f\u4e00\u4e2a 3 \u884c 4 \u5217\u7684\u77e9\u9635\u3002<\/p>\n<p><strong>\u4f7f\u7528\u6570\u7ec4\u5faa\u73af\uff1a<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 for-each \u5faa\u73af\u904d\u5386\u6570\u7ec4\u5143\u7d20\u3002<\/p>\n<pre>for (int number : numbers) {\n    System.out.println(number);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u521b\u5efa\u4e00\u4e2a\u7c7b\u6570\u7ec4\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>\u521b\u5efa java \u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\u58f0\u660e\u6570\u7ec4\u5e76\u5206\u914d\u7a7a\u95f4\u58f0\u660e\u6570\u7ec4\u5e76\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf\u6570\u7ec4\u5c5e\u6027\uff1a\u957f\u5ea6\u3001\u5143\u7d20\u7c7b\u578b\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a\u4f7f\u7528\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u5143\u7d20\uff1a\u4f7f\u7528\u7d22\u5f15\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\uff1a\u4f7f\u7528\u5d4c\u5957\u65b9\u62ec\u53f7\u904d\u5386\u6570\u7ec4\u5143\u7d20\uff1a\u4f7f\u7528 for-each \u5faa\u73af \u5982\u4f55\u7528 Java \u521b\u5efa\u6570\u7ec4 \u7528 Java \u521b\u5efa\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u51e0\u79cd\uff1a 1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4 int[] numbers = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 2. \u58f0\u660e\u6570\u7ec4\u5e76\u4f7f\u7528 new \u5173\u952e\u5b57\u5206\u914d\u7a7a\u95f4 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[5]; \u767b\u5f55\u540e\u590d\u5236 3. \u58f0\u660e\u6570\u7ec4\u5e76\u4f7f\u7528\u6570\u7ec4\u5b57\u9762\u91cf int[] numbers = new int[]{1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u7684\u5c5e\u6027\uff1a \u957f\u5ea6\uff1a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u3002 \u5143\u7d20\u7c7b\u578b\uff1a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f7f\u7528 getClass() \u65b9\u6cd5\u83b7\u53d6\u3002 \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff1a \u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u7d22\u5f15\u4ece 0 [&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-38660","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38660","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=38660"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38660\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}