private void resetSpots(){
        ParkedUsers garage = ParkedUsers.getInstance();
        
        ParkingSpot spot = garage.searchBySpotNumber("101");
        spot.setPrintWriter(null);
        spot.removeAssignedUser();
        
        spot = garage.searchBySpotNumber("312");
        spot.setPrintWriter(null);
        spot.removeAssignedUser();
        
        spot = garage.searchBySpotNumber("139");
        spot.setPrintWriter(null);
        spot.removeAssignedUser();
    }