{"id":65732,"date":"2025-05-03T08:30:57","date_gmt":"2025-05-03T00:30:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65732\/"},"modified":"2025-05-03T08:30:57","modified_gmt":"2025-05-03T00:30:57","slug":"java%e6%95%b0%e7%bb%84%e7%b1%bb%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e9%95%bf%e5%ba%a6-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65732\/","title":{"rendered":"java\u6570\u7ec4\u7c7b\u600e\u4e48\u5b9a\u4e49\u957f\u5ea6"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u5b9a\u4e49\uff0c\u4e4b\u540e\u4e0d\u53ef\u4fee\u6539\u3002\u5b9a\u4e49\u957f\u5ea6\u7684\u6b65\u9aa4\uff1a\u58f0\u660e\u6570\u7ec4\u53d8\u91cf\uff0c\u4f7f\u7528 [] \u6307\u793a\u6570\u7ec4\u7c7b\u578b\u3002\u4f7f\u7528 new \u5173\u952e\u5b57\u5206\u914d\u5185\u5b58\u5e76\u521b\u5efa\u6570\u7ec4\uff0c\u540c\u65f6\u6307\u5b9a\u957f\u5ea6\u3002\u6570\u7ec4\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u5176 length \u5b57\u6bb5\u83b7\u53d6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111308310552540.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u7c7b\u600e\u4e48\u5b9a\u4e49\u957f\u5ea6\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u7c7b\u600e\u4e48\u5b9a\u4e49\u957f\u5ea6\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5b9a\u4e49 Java \u6570\u7ec4\u7684\u957f\u5ea6<\/strong><\/p>\n<p>Java \u4e2d\u7684\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u4e00\u7ec4\u503c\u3002\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u56fa\u5b9a\uff0c\u5e76\u4e14\u5728\u521b\u5efa\u540e\u4e0d\u80fd\u4fee\u6539\u3002<\/p>\n<p><strong>\u5b9a\u4e49 Java \u6570\u7ec4\u957f\u5ea6\u7684\u6b65\u9aa4\uff1a<\/strong><\/p>\n<ol>\n<li> <strong>\u58f0\u660e\u6570\u7ec4\u53d8\u91cf\uff1a<\/strong>\u4f7f\u7528\u65b9\u62ec\u53f7 [] \u6307\u793a\u6570\u7ec4\u7c7b\u578b\uff0c\u5e76\u4f7f\u7528 int \u6216\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ol>\n<pre>int[] myArray;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ol>\n<li> <strong>\u5206\u914d\u5185\u5b58\uff1a<\/strong>\u4f7f\u7528 new \u5173\u952e\u5b57\u5206\u914d\u5185\u5b58\u5e76\u521b\u5efa\u6570\u7ec4\u3002\u540c\u65f6\u6307\u5b9a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ol>\n<pre>myArray = new int[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u6574\u6570\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\u6570\u7ec4\u957f\u5ea6\u5fc5\u987b\u662f\u4e00\u4e2a\u6b63\u6574\u6570\u3002<\/li>\n<li>\u4e00\u65e6\u6570\u7ec4\u521b\u5efa\uff0c\u5176\u957f\u5ea6\u5c31\u4e0d\u80fd\u4fee\u6539\u3002<\/li>\n<li>\u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u5176 length \u5b57\u6bb5\u6765\u83b7\u53d6\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre>System.out.println(\"\u6570\u7ec4\u957f\u5ea6\uff1a\" + myArray.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7c7b\u600e\u4e48\u5b9a\u4e49\u957f\u5ea6\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>java \u4e2d\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u5b9a\u4e49\uff0c\u4e4b\u540e\u4e0d\u53ef\u4fee\u6539\u3002\u5b9a\u4e49\u957f\u5ea6\u7684\u6b65\u9aa4\uff1a\u58f0\u660e\u6570\u7ec4\u53d8\u91cf\uff0c\u4f7f\u7528 [] \u6307\u793a\u6570\u7ec4\u7c7b\u578b\u3002\u4f7f\u7528 new \u5173\u952e\u5b57\u5206\u914d\u5185\u5b58\u5e76\u521b\u5efa\u6570\u7ec4\uff0c\u540c\u65f6\u6307\u5b9a\u957f\u5ea6\u3002\u6570\u7ec4\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u5176 length \u5b57\u6bb5\u83b7\u53d6\u3002 \u5982\u4f55\u5b9a\u4e49 Java \u6570\u7ec4\u7684\u957f\u5ea6 Java \u4e2d\u7684\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u4e00\u7ec4\u503c\u3002\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u56fa\u5b9a\uff0c\u5e76\u4e14\u5728\u521b\u5efa\u540e\u4e0d\u80fd\u4fee\u6539\u3002 \u5b9a\u4e49 Java \u6570\u7ec4\u957f\u5ea6\u7684\u6b65\u9aa4\uff1a \u58f0\u660e\u6570\u7ec4\u53d8\u91cf\uff1a\u4f7f\u7528\u65b9\u62ec\u53f7 [] \u6307\u793a\u6570\u7ec4\u7c7b\u578b\uff0c\u5e76\u4f7f\u7528 int \u6216\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u6307\u5b9a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u3002\u4f8b\u5982\uff1a int[] myArray; \u767b\u5f55\u540e\u590d\u5236 \u5206\u914d\u5185\u5b58\uff1a\u4f7f\u7528 new \u5173\u952e\u5b57\u5206\u914d\u5185\u5b58\u5e76\u521b\u5efa\u6570\u7ec4\u3002\u540c\u65f6\u6307\u5b9a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u4f8b\u5982\uff1a myArray = new int[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u6574\u6570\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 \u6ce8\u610f\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6570\u7ec4\u957f\u5ea6\u5fc5\u987b\u662f\u4e00\u4e2a\u6b63\u6574\u6570\u3002 \u4e00\u65e6\u6570\u7ec4\u521b\u5efa\uff0c\u5176\u957f\u5ea6\u5c31\u4e0d\u80fd\u4fee\u6539\u3002 \u6570\u7ec4\u7684\u957f\u5ea6\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee\u5176 length \u5b57\u6bb5\u6765\u83b7\u53d6\u3002\u4f8b\u5982\uff1a System.out.println(&#8220;\u6570\u7ec4\u957f\u5ea6\uff1a&#8221; + myArray.length); \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7c7b\u600e\u4e48\u5b9a\u4e49\u957f\u5ea6\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\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-65732","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65732","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=65732"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65732\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}