public static Date addDay(Date date, int days) {
		Calendar cal = new GregorianCalendar();
		cal.setTime(date);
		cal.add(Calendar.DAY_OF_YEAR, days);
		return cal.getTime();
	}
Add days on date.

@param date	base date
@param days	days to be added.
@return added Date
ngrinder-core/src/main/java/org/ngrinder/common/util/DateUtils.java