创建日期目录，,public stati

创建日期目录，,public stati

public static void createDateDir(String rootpath){        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");        Calendar c = Calendar.getInstance();        for (int i = 1; i < 50; i++) {            c.add(Calendar.DAY_OF_MONTH, 1);            String dateStr = sdf.format(c.getTime());            File f = new File(MessageFormat.format("{0}\\\\{1}", rootpath,dateStr));            boolean b = f.mkdir();            System.out.println(MessageFormat.format("create dir:{0} , 成功:{1}",f.getAbsoluteFile(),b));        }    }//该片段来自于http://byrx.net