獲取當月的最後時間

/**
	 * 獲取月份的最後時間
	 * @param calendar
	 * @return
	 */
    public static Calendar getLastDayOfDate(Calendar calendar){
		Calendar calendar1=Calendar.getInstance();
		calendar1.setTime(calendar.getTime());
		int actualMaximum = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
		calendar1.set(Calendar.DAY_OF_MONTH,actualMaximum);
		calendar1.set(Calendar.HOUR_OF_DAY,23);
		calendar1.set(Calendar.MINUTE,59);
		calendar1.set(Calendar.SECOND,59);
		return  calendar1;
	}