public void date() {
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMM");

		try {
			Date date = dateFormat.parse(monthDate);
			Calendar cal = Calendar.getInstance();
			cal.setTime(date);

			maxDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
			cal.add(Calendar.MONTH, -1);
			lastMaxDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);

		} catch (ParseException e) {
			e.printStackTrace();
			// return error(fileName + " 期数格式不正确！应为yyyyMM");
		}
	}