public class LampDriver{
  public static void main(String[] args){
    ThreeWayLamp lamp = new ThreeWayLamp();

    System.out.println("Initial lamp status: " + lamp.getStatus());
    lamp.testAdvance(1);
    System.out.println("Status after one advance: " + lamp.getStatus());
    lamp.testAdvance(2);
    System.out.println("Status after two more advances: " +
		       lamp.getStatus());
    lamp.testAdvance(3);
    System.out.println("Status after three more advances: " +
		       lamp.getStatus());
    lamp.testAdvance(4);
    System.out.println("Status after four more advances: " + 
		       lamp.getStatus());
    lamp.testAdvance(5);
    System.out.println("Status after five more advances: " +
		       lamp.getStatus());
  }
}