// A Model class that extends the Observable class.
// Barry Cornelius, 19th February 2000
import java.util. Observable;
public class Model extends Observable
{
   private int iValue;
   public Model()
   {
      iValue = 0;
   }
   public synchronized int get()
   {
      return iValue;
   }
   public synchronized void set(final int pValue)
   {
      iValue = pValue;
      setChanged();
      notifyObservers();
   }      
   public synchronized void inc()
   {
      iValue++;
      setChanged();
      notifyObservers();
   }
}