{"id":37677,"date":"2024-11-26T09:05:15","date_gmt":"2024-11-26T01:05:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37677\/"},"modified":"2024-11-26T09:05:15","modified_gmt":"2024-11-26T01:05:15","slug":"java%e4%b8%ad%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e9%81%8d%e5%8e%86%e8%be%93%e5%87%ba","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37677\/","title":{"rendered":"java\u4e2d\u6570\u7ec4\u600e\u4e48\u904d\u5386\u8f93\u51fa"},"content":{"rendered":"<blockquote><p>\n  java\u4e2d\u904d\u5386\u6570\u7ec4\u6709\u4e09\u79cd\u5e38\u7528\u65b9\u6cd5\uff1afor-each\u5faa\u73af\uff1a\u9002\u7528\u4e8e\u6240\u6709\u6570\u7ec4\u7c7b\u578b\uff0c\u8bed\u6cd5\u7b80\u6d01\u6613\u7528\u3002\u589e\u5f3afor\u5faa\u73af\uff1a\u53ea\u9002\u7528\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff0c\u540c\u6837\u8bed\u6cd5\u7b80\u6d01\u3002\u4f20\u7edffor\u5faa\u73af\uff1a\u7075\u6d3b\u4e14\u9002\u7528\u4e8e\u6240\u6709\u6570\u7ec4\u7c7b\u578b\uff0c\u5141\u8bb8\u63a7\u5236\u904d\u5386\u987a\u5e8f\u548c\u6b65\u957f\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111308512542415.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u6570\u7ec4\u600e\u4e48\u904d\u5386\u8f93\u51fa\u63d2\u56fe\" alt=\"java\u4e2d\u6570\u7ec4\u600e\u4e48\u904d\u5386\u8f93\u51fa\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u4e2d\u904d\u5386\u6570\u7ec4\u5e76\u8f93\u51fa\u5143\u7d20<\/strong><\/p>\n<p>\u5728Java\u4e2d\uff0c\u904d\u5386\u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u70b9\u548c\u7f3a\u70b9\u3002\u4e0b\u9762\u662f\u4e24\u79cd\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. for-each\u5faa\u73af<\/strong><\/p>\n<p>for-each\u5faa\u73af\u662f\u4e00\u79cd\u7b80\u6d01\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u904d\u5386\u6570\u7ec4\u7684\u65b9\u6cd5\u3002\u5b83\u9002\u7528\u4e8e\u6240\u6709\u6570\u7ec4\u7c7b\u578b\uff0c\u5305\u62ec\u57fa\u672c\u7c7b\u578b\u548c\u5bf9\u8c61\u7c7b\u578b\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>for (element : array) {\n  \/\/ \u5bf9\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u6267\u884c\u6b64\u64cd\u4f5c\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u904d\u5386\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u5e76\u8f93\u51fa\u6bcf\u4e2a\u5143\u7d20\uff1a<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nfor (int number : numbers) {\n  System.out.println(number);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u589e\u5f3afor\u5faa\u73af<\/strong><\/p>\n<p>\u589e\u5f3afor\u5faa\u73af\u662f\u53e6\u4e00\u79cd\u7b80\u6d01\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u904d\u5386\u6570\u7ec4\u7684\u65b9\u6cd5\u3002\u5b83\u53ea\u9002\u7528\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff08int\u3001long\u3001float\u3001double\u3001char\u3001boolean\uff09\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>for (type variable : array) {\n  \/\/ \u5bf9\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u6267\u884c\u6b64\u64cd\u4f5c\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u904d\u5386\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u5e76\u8f93\u51fa\u6bcf\u4e2a\u5143\u7d20\uff1a<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nfor (int number : numbers) {\n  System.out.println(number);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f20\u7edffor\u5faa\u73af<\/strong><\/p>\n<p>\u4f20\u7edffor\u5faa\u73af\u63d0\u4f9b\u4e86\u4e00\u79cd\u7075\u6d3b\u7684\u65b9\u5f0f\u6765\u904d\u5386\u6570\u7ec4\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u6240\u6709\u6570\u7ec4\u7c7b\u578b\uff0c\u5e76\u4e14\u5141\u8bb8\u60a8\u63a7\u5236\u904d\u5386\u6570\u7ec4\u7684\u987a\u5e8f\u548c\u6b65\u957f\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>for (int i = 0; i &lt; array.length; i++) {\n  \/\/ \u5bf9\u6570\u7ec4\u7684\u7b2ci\u4e2a\u5143\u7d20\u6267\u884c\u6b64\u64cd\u4f5c\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u904d\u5386\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u5e76\u8f93\u51fa\u6bcf\u4e2a\u5143\u7d20\uff1a<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nfor (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>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u6570\u7ec4\u600e\u4e48\u904d\u5386\u8f93\u51fa\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>java\u4e2d\u904d\u5386\u6570\u7ec4\u6709\u4e09\u79cd\u5e38\u7528\u65b9\u6cd5\uff1afor-each\u5faa\u73af\uff1a\u9002\u7528\u4e8e\u6240\u6709\u6570\u7ec4\u7c7b\u578b\uff0c\u8bed\u6cd5\u7b80\u6d01\u6613\u7528\u3002\u589e\u5f3afor\u5faa\u73af\uff1a\u53ea\u9002\u7528\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff0c\u540c\u6837\u8bed\u6cd5\u7b80\u6d01\u3002\u4f20\u7edffor\u5faa\u73af\uff1a\u7075\u6d3b\u4e14\u9002\u7528\u4e8e\u6240\u6709\u6570\u7ec4\u7c7b\u578b\uff0c\u5141\u8bb8\u63a7\u5236\u904d\u5386\u987a\u5e8f\u548c\u6b65\u957f\u3002 Java\u4e2d\u904d\u5386\u6570\u7ec4\u5e76\u8f93\u51fa\u5143\u7d20 \u5728Java\u4e2d\uff0c\u904d\u5386\u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u70b9\u548c\u7f3a\u70b9\u3002\u4e0b\u9762\u662f\u4e24\u79cd\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a 1. for-each\u5faa\u73af for-each\u5faa\u73af\u662f\u4e00\u79cd\u7b80\u6d01\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u904d\u5386\u6570\u7ec4\u7684\u65b9\u6cd5\u3002\u5b83\u9002\u7528\u4e8e\u6240\u6709\u6570\u7ec4\u7c7b\u578b\uff0c\u5305\u62ec\u57fa\u672c\u7c7b\u578b\u548c\u5bf9\u8c61\u7c7b\u578b\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b for (element : array) { \/\/ \u5bf9\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u6267\u884c\u6b64\u64cd\u4f5c } \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u904d\u5386\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u5e76\u8f93\u51fa\u6bcf\u4e2a\u5143\u7d20\uff1a int[] numbers = {1, 2, 3, 4, 5}; for (int number : numbers) { System.out.println(number); } \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 2. \u589e\u5f3afor\u5faa\u73af \u589e\u5f3afor\u5faa\u73af\u662f\u53e6\u4e00\u79cd\u7b80\u6d01\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u904d\u5386\u6570\u7ec4\u7684\u65b9\u6cd5\u3002\u5b83\u53ea\u9002\u7528\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff08int\u3001long\u3001float\u3001double\u3001char\u3001boolean\uff09\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a for (type variable : array) { \/\/ \u5bf9\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u6267\u884c\u6b64\u64cd\u4f5c } \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u904d\u5386\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u5e76\u8f93\u51fa\u6bcf\u4e2a\u5143\u7d20\uff1a int[] numbers = {1, 2, 3, [&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-37677","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37677","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=37677"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37677\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37677"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37677"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37677"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}