{"id":65326,"date":"2025-05-03T15:45:53","date_gmt":"2025-05-03T07:45:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65326\/"},"modified":"2025-05-03T15:45:53","modified_gmt":"2025-05-03T07:45:53","slug":"java%e9%87%8c%e9%9d%a2%e6%80%8e%e4%b9%88%e5%86%99%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65326\/","title":{"rendered":"java\u91cc\u9762\u600e\u4e48\u5199\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\uff0c\u6bcf\u4e2a\u5143\u7d20\u4ece 0 \u5f00\u59cb\u7d22\u5f15\u3002\u5728 java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 new \u64cd\u4f5c\u7b26\u521b\u5efa\u6570\u7ec4\uff0c\u5e76\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u591a\u7ef4\u6570\u7ec4\u5141\u8bb8\u521b\u5efa\u5177\u6709\u591a\u4e2a\u7ef4\u5ea6\u7684\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111220365767223.jpg\" class=\"aligncenter\" title=\"java\u91cc\u9762\u600e\u4e48\u5199\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u91cc\u9762\u600e\u4e48\u5199\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u521b\u5efa\u548c\u64cd\u4f5c\u6570\u7ec4<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662f\u6570\u7ec4\uff1f<\/strong><\/p>\n<p>\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u4e00\u7cfb\u5217\u5143\u7d20\u3002\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u7d22\u5f15\uff0c\u7d22\u5f15\u4ece 0 \u5f00\u59cb\u3002<\/p>\n<p><strong>\u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u6570\u7ec4\uff1a<\/p>\n<pre>int[] numbers = new int[5];  \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a int \u5143\u7d20\u7684\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8bbf\u95ee\u5143\u7d20<\/strong><\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<pre>System.out.println(numbers[0]);  \/\/ \u8f93\u51fa\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4fee\u6539\u5143\u7d20<\/strong><\/p>\n<p>\u540c\u6837\u5730\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<pre>numbers[0] = 10;  \/\/ \u5c06\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4f4d 10<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n<pre>System.out.println(numbers.length);  \/\/ \u8f93\u51fa\u6570\u7ec4\u957f\u5ea6<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u904d\u5386\u6570\u7ec4<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<pre>for (int i = 0; i &lt; numbers.length; i++) {\n  System.out.println(numbers[i]);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u591a\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>Java \u8fd8\u652f\u6301\u591a\u7ef4\u6570\u7ec4\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>int[][] matrix = new int[3][4];  \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 3 \u884c 4 \u5217\u7684 2D \u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u91cc\u9762\u600e\u4e48\u5199\u6570\u7ec4\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>\u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\uff0c\u6bcf\u4e2a\u5143\u7d20\u4ece 0 \u5f00\u59cb\u7d22\u5f15\u3002\u5728 java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 new \u64cd\u4f5c\u7b26\u521b\u5efa\u6570\u7ec4\uff0c\u5e76\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u548c\u4fee\u6539\u5143\u7d20\u3002\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u591a\u7ef4\u6570\u7ec4\u5141\u8bb8\u521b\u5efa\u5177\u6709\u591a\u4e2a\u7ef4\u5ea6\u7684\u6570\u7ec4\u3002 Java \u4e2d\u521b\u5efa\u548c\u64cd\u4f5c\u6570\u7ec4 \u4ec0\u4e48\u662f\u6570\u7ec4\uff1f \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u4e00\u7cfb\u5217\u5143\u7d20\u3002\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u7d22\u5f15\uff0c\u7d22\u5f15\u4ece 0 \u5f00\u59cb\u3002 \u521b\u5efa\u6570\u7ec4 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u6570\u7ec4\uff1a int[] numbers = new int[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a int \u5143\u7d20\u7684\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 \u8bbf\u95ee\u5143\u7d20 \u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a System.out.println(numbers[0]); \/\/ \u8f93\u51fa\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20 \u767b\u5f55\u540e\u590d\u5236 \u4fee\u6539\u5143\u7d20 \u540c\u6837\u5730\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u4fee\u6539\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a numbers[0] = 10; \/\/ \u5c06\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4f4d 10 \u767b\u5f55\u540e\u590d\u5236 \u6570\u7ec4\u957f\u5ea6 \u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7684 length \u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a System.out.println(numbers.length); \/\/ \u8f93\u51fa\u6570\u7ec4\u957f\u5ea6 \u767b\u5f55\u540e\u590d\u5236 \u904d\u5386\u6570\u7ec4 \u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a [&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-65326","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65326","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=65326"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65326\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}