1  
   2    public boolean isWorkingDay(Date date) {
   3          Calendar cal = GregorianCalendar.getInstance();
   4          cal.setTime(date);
   5          int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK); 
   6          if ((dayOfWeek  Calendar.SATURDAY) || (dayOfWeek  Calendar.SUNDAY)) {
   7              return false;
   8          } 
   9          return true;
  10     }