public class Ex8n4
{
  private static void compareCars (Car firstCar, Car secondCar)
    {
      System.out.println ();

      int res = Car.compare (firstCar, secondCar);

      System.out.print (firstCar + " is ");

      switch (res)
        {
        case -1 : 
          System.out.print ("less powerful than");
          break;
        case 1 : 
          System.out.print ("more powerful than");
          break;
        case 0 : 
          System.out.print ("as powerful as");
        }

      System.out.println (" " + secondCar);
    } 

  public static void main (String[] args) throws Exception
    {
      Car aCar = new Car (Car.BENFORD, "Hawkeye", 999);
      Car bCar = new Car (Car.PRINZ, "Supreme",1300);

      compareCars (aCar, bCar);
      compareCars (bCar, aCar);
      compareCars (aCar, aCar);
    } 

} // end of class Ex8n4