{"id":11,"date":"2024-07-06T17:31:30","date_gmt":"2024-07-06T09:31:30","guid":{"rendered":"http:\/\/note.ui11.cc\/?p=11"},"modified":"2024-07-06T17:31:31","modified_gmt":"2024-07-06T09:31:31","slug":"format%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/note.ui11.cc\/index.php\/2024\/07\/06\/format%e6%96%b9%e6%b3%95\/","title":{"rendered":"format\u65b9\u6cd5"},"content":{"rendered":"\n

\u5728 Java \u4e2d\uff0cString<\/code> \u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e2a format<\/code> \u65b9\u6cd5\uff0c\u5b83\u7528\u4e8e\u521b\u5efa\u683c\u5f0f\u5316\u7684\u5b57\u7b26\u4e32\u3002\u8fd9\u4e2a\u65b9\u6cd5\u5141\u8bb8\u4f60\u5c06\u6570\u636e\u63d2\u5165\u5230\u5b57\u7b26\u4e32\u7684\u5360\u4f4d\u7b26\u4f4d\u7f6e\uff0c\u4ece\u800c\u751f\u6210\u4e00\u4e2a\u683c\u5f0f\u5316\u7684\u5b57\u7b26\u4e32\u3002format<\/code> \u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u573a\u666f\uff0c\u5305\u62ec\u65e5\u5fd7\u8bb0\u5f55\u3001\u7528\u6237\u754c\u9762\u663e\u793a\u3001\u6587\u4ef6\u8f93\u51fa\u7b49\u3002<\/p>\n\n\n\n

\u4f7f\u7528 format<\/code> \u65b9\u6cd5<\/h3>\n\n\n\n

format<\/code> \u65b9\u6cd5\u6709\u4e24\u79cd\u5f62\u5f0f\uff1a<\/p>\n\n\n\n

    \n
  1. <\/li>\n<\/ol>\n\n\n\n

    \u683c\u5f0f\u5b57\u7b26\u4e32\u4e2d\u53ef\u4ee5\u5305\u542b\u666e\u901a\u6587\u672c\u548c\u683c\u5f0f\u8bf4\u660e\u7b26\u3002\u683c\u5f0f\u8bf4\u660e\u7b26\u4ee5 %<\/code> \u5f00\u5934\uff0c\u540e\u8ddf\u4e00\u4e2a\u6216\u591a\u4e2a\u683c\u5f0f\u5316\u9009\u9879\uff0c\u7528\u4e8e\u6307\u5b9a\u5982\u4f55\u683c\u5f0f\u5316\u76f8\u5e94\u7684\u53c2\u6570\u3002<\/p>\n\n\n\n

    \u5e38\u7528\u7684\u683c\u5f0f\u8bf4\u660e\u7b26<\/h3>\n\n\n\n
      \n
    • %s<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u4e32\u3002<\/li>\n\n\n\n
    • %d<\/code>\u00a0\u6216\u00a0%i<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u5341\u8fdb\u5236\u6574\u6570\u3002<\/li>\n\n\n\n
    • %f<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u6d6e\u70b9\u6570\u3002<\/li>\n\n\n\n
    • %e<\/code>\u00a0\u6216\u00a0%E<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u79d1\u5b66\u8ba1\u6570\u6cd5\u8868\u793a\u7684\u6d6e\u70b9\u6570\u3002<\/li>\n\n\n\n
    • %g<\/code>\u00a0\u6216\u00a0%G<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u6d6e\u70b9\u6570\uff0c\u4f7f\u7528\u00a0%f<\/code>\u00a0\u6216\u00a0%e<\/code>\uff08%E<\/code>\uff09\u4e2d\u8f83\u77ed\u7684\u4e00\u79cd\u8868\u793a\u3002<\/li>\n\n\n\n
    • %c<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u3002<\/li>\n\n\n\n
    • %b<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u5e03\u5c14\u503c\u3002<\/li>\n\n\n\n
    • %h<\/code>\u00a0\u6216\u00a0%H<\/code>\uff1a\u683c\u5f0f\u5316\u4e3a\u54c8\u5e0c\u7801\uff08%h<\/code>\u00a0\u4e3a\u5c0f\u5199\uff0c%H<\/code>\u00a0\u4e3a\u5927\u5199\uff09\u3002<\/li>\n<\/ul>\n\n\n\n

      \u793a\u4f8b<\/h3>\n\n\n\n
      java<\/pre>\n\n\n\n
      int number = 10;\nString name = \"Alice\";\ndouble price = 19.99;\n\nString formattedString = String.format(\"Number: %d, Name: %s, Price: %.2f\", number, name, price);\nSystem.out.println(formattedString);<\/code><\/pre>\n\n\n\n
      \u8f93\u51fa\u7ed3\u679c\u5c06\u662f\uff1a<\/p>\n\n\n\n
      Number: 10, Name: Alice, Price: 19.99<\/code><\/pre>\n\n\n\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c%d\u3001%s \u548c %.2f \u5206\u522b\u7528\u4e8e\u683c\u5f0f\u5316\u6574\u6570\u3001\u5b57\u7b26\u4e32\u548c\u6d6e\u70b9\u6570\u3002.2f \u8868\u793a\u6d6e\u70b9\u6570\u5c06\u88ab\u683c\u5f0f\u5316\u4e3a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u7684\u503c\u3002<\/p>\n\n\n\n
      \u6ce8\u610f\u4e8b\u9879
      \u5f53\u4f7f\u7528 format \u65b9\u6cd5\u65f6\uff0c\u786e\u4fdd\u683c\u5f0f\u8bf4\u660e\u7b26\u4e0e\u76f8\u5e94\u7684\u53c2\u6570\u7c7b\u578b\u5339\u914d\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u629b\u51fa IllegalFormatException\u3002
      \u5728\u683c\u5f0f\u5316\u6d6e\u70b9\u6570\u65f6\uff0c\u53ef\u4ee5\u6307\u5b9a\u5c0f\u6570\u70b9\u540e\u7684\u4f4d\u6570\uff0c\u5982 %.2f \u8868\u793a\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570\u3002
      \u4f7f\u7528 format \u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u590d\u6742\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u4f46\u8981\u786e\u4fdd\u683c\u5f0f\u5b57\u7b26\u4e32\u7684\u6b63\u786e\u6027\uff0c\u907f\u514d\u683c\u5f0f\u5316\u9519\u8bef\u3002
      String.format \u65b9\u6cd5\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u751f\u6210\u683c\u5f0f\u5316\u7684\u8f93\u51fa\uff0c\u65e0\u8bba\u662f\u7528\u4e8e\u65e5\u5fd7\u8bb0\u5f55\u3001\u7528\u6237\u754c\u9762\u663e\u793a\u8fd8\u662f\u5176\u4ed6\u9700\u8981\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u573a\u666f\u3002<\/p>\n\n\n\n
      <\/p>\n\n\n\n
      <\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5728 Java \u4e2d\uff0cString \u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e2a format \u65b9\u6cd5\uff0c\u5b83\u7528\u4e8e\u521b\u5efa\u683c\u5f0f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-11","post","type-post","status-publish","format-standard","hentry","category-javase"],"_links":{"self":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/11","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/comments?post=11"}],"version-history":[{"count":1,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/11\/revisions"}],"predecessor-version":[{"id":12,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/11\/revisions\/12"}],"wp:attachment":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/media?parent=11"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/categories?post=11"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/tags?post=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}