{"id":65383,"date":"2025-05-03T11:15:14","date_gmt":"2025-05-03T03:15:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65383\/"},"modified":"2025-05-03T11:15:14","modified_gmt":"2025-05-03T03:15:14","slug":"java%e6%80%8e%e4%b9%88%e7%a1%ae%e5%ae%9a%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65383\/","title":{"rendered":"java\u600e\u4e48\u786e\u5b9a\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java \u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u786e\u5b9a\uff0c\u65e0\u6cd5\u66f4\u6539\u3002\u6709\u4e24\u79cd\u65b9\u6cd5\u786e\u5b9a\u5927\u5c0f\uff1a\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u5927\u5c0f (int[] numbers = new int[5])\u4f7f\u7528 length \u5c5e\u6027 (int size = numbers.length; \/\/ size \u4e3a 5)java \u6570\u7ec4\u5927\u5c0f\u53d7\u64cd\u4f5c\u7cfb\u7edf\u7684\u9650\u5236\uff0c\u5bf9\u4e8e 32 \u4f4d\u7cfb\u7edf\u4e3a 21 \u4ebf &#8211; 1\uff0c64 \u4f4d\u7cfb\u7edf\u4e3a 922 \u4e07\u4ebf &#8211; 1\u3002\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u4e14\u5927\u5c0f\u5fc5\u987b\u4e3a\u6b63\u6574\u6570\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111222391620329.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u786e\u5b9a\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u786e\u5b9a\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u786e\u5b9a Java \u6570\u7ec4\u7684\u5927\u5c0f<\/strong><\/p>\n<p>Java \u6570\u7ec4\u7684\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u786e\u5b9a\uff0c\u5e76\u4e14\u5728\u6570\u7ec4\u751f\u547d\u5468\u671f\u5185\u4e0d\u53ef\u66f4\u6539\u3002\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u786e\u5b9a Java \u6570\u7ec4\u7684\u5927\u5c0f\uff1a<\/p>\n<p><strong>1. \u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u5927\u5c0f<\/strong><\/p>\n<pre>int[] numbers = new int[5];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cnumbers \u6570\u7ec4\u7684\u5927\u5c0f\u4e3a 5\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u53ef\u4ee5\u5b58\u50a8 5 \u4e2a int \u503c\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>2. \u4f7f\u7528 length \u5c5e\u6027<\/strong><\/p>\n<p>\u6570\u7ec4\u7684 length \u5c5e\u6027\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\uff0c\u76f8\u5f53\u4e8e\u6570\u7ec4\u7684\u5927\u5c0f\u3002<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nint size = numbers.length; \/\/ size \u4e3a 5<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6570\u7ec4\u5927\u5c0f\u7684\u9650\u5236<\/strong><\/p>\n<p>Java \u6570\u7ec4\u7684\u5927\u5c0f\u53d7\u7684\u9650\u5236\u3002\u5bf9\u4e8e 32 \u4f4d\u64cd\u4f5c\u7cfb\u7edf\uff0c\u6570\u7ec4\u5927\u5c0f\u9650\u5236\u4e3a 2^31 &#8211; 1\uff0821 \u4ebf &#8211; 1\uff09\u3002\u5bf9\u4e8e 64 \u4f4d\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5219\u4e3a 2^63 &#8211; 1\uff08922 \u4e07\u4ebf &#8211; 1\uff09\u3002<\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>Java \u6570\u7ec4\u4f7f\u7528\u96f6\u7d22\u5f15\uff0c\u8fd9\u610f\u5473\u7740\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\u3002<\/li>\n<li>\u6570\u7ec4\u7684\u5927\u5c0f\u5fc5\u987b\u4e3a\u6b63\u6574\u6570\u3002<\/li>\n<li>\u5c1d\u8bd5\u8bbf\u95ee\u6570\u7ec4\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\uff08\u5373\u8d1f\u7d22\u5f15\u6216\u5927\u4e8e\u6570\u7ec4\u5927\u5c0f\uff09\u4f1a\u629b\u51fa IndexOutOfBoundsException\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u786e\u5b9a\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>java \u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u786e\u5b9a\uff0c\u65e0\u6cd5\u66f4\u6539\u3002\u6709\u4e24\u79cd\u65b9\u6cd5\u786e\u5b9a\u5927\u5c0f\uff1a\u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u5927\u5c0f (int[] numbers = new int[5])\u4f7f\u7528 length \u5c5e\u6027 (int size = numbers.length; \/\/ size \u4e3a 5)java \u6570\u7ec4\u5927\u5c0f\u53d7\u64cd\u4f5c\u7cfb\u7edf\u7684\u9650\u5236\uff0c\u5bf9\u4e8e 32 \u4f4d\u7cfb\u7edf\u4e3a 21 \u4ebf &#8211; 1\uff0c64 \u4f4d\u7cfb\u7edf\u4e3a 922 \u4e07\u4ebf &#8211; 1\u3002\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u4e14\u5927\u5c0f\u5fc5\u987b\u4e3a\u6b63\u6574\u6570\u3002 \u5982\u4f55\u786e\u5b9a Java \u6570\u7ec4\u7684\u5927\u5c0f Java \u6570\u7ec4\u7684\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u786e\u5b9a\uff0c\u5e76\u4e14\u5728\u6570\u7ec4\u751f\u547d\u5468\u671f\u5185\u4e0d\u53ef\u66f4\u6539\u3002\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u786e\u5b9a Java \u6570\u7ec4\u7684\u5927\u5c0f\uff1a 1. \u521b\u5efa\u6570\u7ec4\u65f6\u6307\u5b9a\u5927\u5c0f int[] numbers = new int[5]; \u767b\u5f55\u540e\u590d\u5236 \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cnumbers \u6570\u7ec4\u7684\u5927\u5c0f\u4e3a 5\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u53ef\u4ee5\u5b58\u50a8 5 \u4e2a int \u503c\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. [&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-65383","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65383","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=65383"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65383\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}