      1  public class Vehicle

      2  {

      3     private int numberOfTires;

      4

      5     public int getNumberOfTires()

      6     {

      7        return numberOfTires;

      8     }

      9

     10     public void setNumberOfTires(int newValue)

     11     {

     12        numberOfTires = newValue;

     13     }

     14

     15     public String toString()

     16     {

     17        return getClass().getName() + "[numberOfTires=" + numberOfTires + "]";

     18        // This is a good way of implementing toString in a superclass--see Special Topic 9.6

     19     }

     20  }