public boolean isWorkingDay(Date date) {
        Calendar cal = GregorianCalendar.getInstance();
        cal.setTime(date);
        int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK); 
        if ((dayOfWeek  Calendar.SATURDAY) || (dayOfWeek  Calendar.SUNDAY)) {
            return false;
        } 
        return true;
   }