{"id":34984,"date":"2024-11-26T09:48:50","date_gmt":"2024-11-26T01:48:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34984\/"},"modified":"2024-11-26T09:48:50","modified_gmt":"2024-11-26T01:48:50","slug":"java%e6%80%8e%e4%b9%88%e5%9c%a8%e7%ba%af%e6%95%b0%e7%bb%84%e5%89%8d%e7%9b%b4%e6%8e%a5%e5%8a%a0%e9%9b%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34984\/","title":{"rendered":"java\u600e\u4e48\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 string.format \u65b9\u6cd5\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6\uff1a\u4f7f\u7528 string.format \u65b9\u6cd5\u3002\u6307\u5b9a\u683c\u5f0f\u5b57\u7b26\u4e32 &#8220;&#8221;%0nd&#8221;\uff1a%0 \u8868\u793a\u6dfb\u52a0\u524d\u5bfc\u96f6\u3002n \u6307\u5b9a\u6700\u5c0f\u5bbd\u5ea6\uff08\u5373\u96f6\u7684\u4e2a\u6570\uff09\u3002d \u8868\u793a\u89e3\u91ca\u4e3a\u6574\u6570\u503c\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110307364120399.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u56de\u7b54\uff1a<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 String.format \u65b9\u6cd5\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6\u3002<\/p>\n<p><strong>\u8be6\u7ec6\u5c55\u5f00\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>String.format \u65b9\u6cd5\u53ef\u4ee5\u6839\u636e\u63d0\u4f9b\u7684\u683c\u5f0f\u5b57\u7b26\u4e32\u6765\u683c\u5f0f\u5316\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002\u5bf9\u4e8e\u6570\u7ec4\uff0c\u683c\u5f0f\u5b57\u7b26\u4e32\u5e94\u5305\u542b &#8220;%0Nd&#8221;\uff0c\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>%0 \u8868\u793a\u5728\u7ed3\u679c\u4e2d\u6dfb\u52a0\u524d\u5bfc\u96f6\u3002<\/li>\n<li>N \u6307\u5b9a\u6700\u5c0f\u5bbd\u5ea6\uff08\u5373\u6240\u9700\u96f6\u7684\u4e2a\u6570\uff09\u3002<\/li>\n<li>d \u8868\u793a\u8be5\u503c\u5e94\u89e3\u91ca\u4e3a\u6574\u6570\u503c\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<pre>int[] numbers = {1, 23, 456, 7890};\n\nfor (int number : numbers) {\n    String formatted = String.format(\"%05d\", number);\n    System.out.println(formatted);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8f93\u51fa\uff1a<\/strong><\/p>\n<pre>00001\n00023\n00456\n07890<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c&#8221;%05d&#8221; \u683c\u5f0f\u5b57\u7b26\u4e32\u6307\u5b9a\u4e86\u6700\u5c0f\u5bbd\u5ea6\u4e3a 5 \u4f4d\uff0c\u56e0\u6b64\u6240\u6709\u6570\u5b57\u90fd\u88ab\u683c\u5f0f\u5316\u4e3a 5 \u4f4d\u5bbd\uff0c\u5e76\u5728\u5fc5\u8981\u65f6\u6dfb\u52a0\u524d\u5bfc\u96f6\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6\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>\u5728 java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 string.format \u65b9\u6cd5\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6\uff1a\u4f7f\u7528 string.format \u65b9\u6cd5\u3002\u6307\u5b9a\u683c\u5f0f\u5b57\u7b26\u4e32 &#8220;&#8221;%0nd&#8221;\uff1a%0 \u8868\u793a\u6dfb\u52a0\u524d\u5bfc\u96f6\u3002n \u6307\u5b9a\u6700\u5c0f\u5bbd\u5ea6\uff08\u5373\u96f6\u7684\u4e2a\u6570\uff09\u3002d \u8868\u793a\u89e3\u91ca\u4e3a\u6574\u6570\u503c\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6 \u76f4\u63a5\u56de\u7b54\uff1a \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 String.format \u65b9\u6cd5\u5728\u7eaf\u6570\u7ec4\u524d\u76f4\u63a5\u52a0\u96f6\u3002 \u8be6\u7ec6\u5c55\u5f00\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b String.format \u65b9\u6cd5\u53ef\u4ee5\u6839\u636e\u63d0\u4f9b\u7684\u683c\u5f0f\u5b57\u7b26\u4e32\u6765\u683c\u5f0f\u5316\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002\u5bf9\u4e8e\u6570\u7ec4\uff0c\u683c\u5f0f\u5b57\u7b26\u4e32\u5e94\u5305\u542b &#8220;%0Nd&#8221;\uff0c\u5176\u4e2d\uff1a %0 \u8868\u793a\u5728\u7ed3\u679c\u4e2d\u6dfb\u52a0\u524d\u5bfc\u96f6\u3002 N \u6307\u5b9a\u6700\u5c0f\u5bbd\u5ea6\uff08\u5373\u6240\u9700\u96f6\u7684\u4e2a\u6570\uff09\u3002 d \u8868\u793a\u8be5\u503c\u5e94\u89e3\u91ca\u4e3a\u6574\u6570\u503c\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a int[] numbers = {1, 23, 456, 7890}; for (int number : numbers) { String formatted = String.format(&#8220;%05d&#8221;, number); System.out.println(formatted); } \u767b\u5f55\u540e\u590d\u5236 \u8f93\u51fa\uff1a 00001 [&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-34984","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34984","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=34984"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34984\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34984"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34984"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}