{"id":66737,"date":"2025-05-03T16:22:32","date_gmt":"2025-05-03T08:22:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66737\/"},"modified":"2025-05-03T16:22:32","modified_gmt":"2025-05-03T08:22:32","slug":"java%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96%e6%95%b0%e7%bb%84%e6%88%90%e5%91%98%e6%95%b0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66737\/","title":{"rendered":"java\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u6210\u5458\u6570"},"content":{"rendered":"<blockquote><p>\n  \u83b7\u53d6 java \u6570\u7ec4\u6210\u5458\u6570\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 length \u5b57\u6bb5\uff1a\u83b7\u53d6\u6570\u7ec4\u5185\u7f6e\u7684 length \u5b57\u6bb5\u3002\u4f7f\u7528 for-each \u5faa\u73af\uff1a\u904d\u5386\u6570\u7ec4\u5e76\u8ba1\u7b97\u5143\u7d20\u6570\u91cf\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111621020773019.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u6210\u5458\u6570\u63d2\u56fe\" alt=\"java\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u6210\u5458\u6570\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u6210\u5458\u6570<\/strong><\/p>\n<p>Java \u6570\u7ec4\u662f\u4e00\u79cd\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u540c\u7c7b\u578b\u7684\u5143\u7d20\u3002\u83b7\u53d6\u6570\u7ec4\u6210\u5458\u6570\u6709\u4e24\u79cd\u7b80\u5355\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 length \u5b57\u6bb5<\/strong><\/p>\n<p>\u6bcf\u4e2a\u6570\u7ec4\u90fd\u6709\u4e00\u4e2a\u5185\u7f6e\u7684 length \u5b57\u6bb5\uff0c\u5b83\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nint count = numbers.length; \/\/ count \u5c06\u7b49\u4e8e 5<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 for-each \u5faa\u73af<\/strong><\/p>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528 for-each \u5faa\u73af\u904d\u5386\u6570\u7ec4\u5e76\u8ba1\u7b97\u5143\u7d20\u7684\u6570\u91cf\u3002\u8fd9\u79cd\u65b9\u6cd5\u6548\u7387\u8f83\u4f4e\uff0c\u4f46\u66f4\u52a0\u901a\u7528\uff1a<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nint count = 0;\nfor (int number : numbers) {\n    count++;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>\u6570\u7ec4\u662f\u56fa\u5b9a\u957f\u5ea6\u7684\uff0c\u8fd9\u610f\u5473\u7740\u4e00\u65e6\u521b\u5efa\u5c31\u65e0\u6cd5\u6539\u53d8\u5176\u5927\u5c0f\u3002<\/li>\n<li>\u5c1d\u8bd5\u8bbf\u95ee\u8d85\u51fa\u6570\u7ec4\u8303\u56f4\u7684\u7d22\u5f15\u5c06\u5bfc\u81f4 ArrayIndexOutOfBoundsException \u5f02\u5e38\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u6210\u5458\u6570\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>\u83b7\u53d6 java \u6570\u7ec4\u6210\u5458\u6570\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 length \u5b57\u6bb5\uff1a\u83b7\u53d6\u6570\u7ec4\u5185\u7f6e\u7684 length \u5b57\u6bb5\u3002\u4f7f\u7528 for-each \u5faa\u73af\uff1a\u904d\u5386\u6570\u7ec4\u5e76\u8ba1\u7b97\u5143\u7d20\u6570\u91cf\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002 \u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u6210\u5458\u6570 Java \u6570\u7ec4\u662f\u4e00\u79cd\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u540c\u7c7b\u578b\u7684\u5143\u7d20\u3002\u83b7\u53d6\u6570\u7ec4\u6210\u5458\u6570\u6709\u4e24\u79cd\u7b80\u5355\u7684\u65b9\u6cd5\uff1a \u65b9\u6cd5 1\uff1a\u4f7f\u7528 length \u5b57\u6bb5 \u6bcf\u4e2a\u6570\u7ec4\u90fd\u6709\u4e00\u4e2a\u5185\u7f6e\u7684 length \u5b57\u6bb5\uff0c\u5b83\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = {1, 2, 3, 4, 5}; int count = numbers.length; \/\/ count \u5c06\u7b49\u4e8e 5 \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 for-each \u5faa\u73af \u4e5f\u53ef\u4ee5\u4f7f\u7528 for-each \u5faa\u73af\u904d\u5386\u6570\u7ec4\u5e76\u8ba1\u7b97\u5143\u7d20\u7684\u6570\u91cf\u3002\u8fd9\u79cd\u65b9\u6cd5\u6548\u7387\u8f83\u4f4e\uff0c\u4f46\u66f4\u52a0\u901a\u7528\uff1a int[] numbers = {1, 2, 3, 4, 5}; int [&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-66737","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66737","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=66737"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66737\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}