code: public static String format2ddMMMyy(Date date){
          SimpleDateFormat format = new SimpleDateFormat("ddMMMyy", Locale.ENGLISH);
          return format.format(date).toUpperCase();
      }
docs: 格式化日期格式为：ddMMMyy<br>
  generate by: vakin jiang
  at 2012-10-17
  @param dateStr
  @return