Calendar aCalendar = Calendar.getInstance(); aCalendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); aCalendar.set(Calendar.HOUR_OF_DAY, 0); aCalendar.set(Calendar.MINUTE, 0); aCalendar.set(Calendar.SECOND, 0); aCalendar.set(Calendar.MILLISECOND, 0); aCalendar.add(Calendar.DATE, -7); println(aCalendar.getTime());