java日期格式转字符串格式

   String textModifyTime = DateFormatUtils.format(mmCardInfo
     .getLastModifyTime(),
     FcmConstants.FCM_TIMESTAMP_FORMAT_PATTERN);
   String picModifyTime = DateFormatUtils.format(mmCardInfo
     .getMmCardPicInfo().getLastModifyTime(),
     FcmConstants.FCM_TIMESTAMP_FORMAT_PATTERN);