Listing 15: ZoomModem.java

public class ZoomModem implements Modem
{
   public void dial(String pno){}
   public void hangup(){}
   public void send(char c){}
   public char recv() {return 0;}
   public void accept(ModemVisitor v)
   {
      try
      {
         ZoomModemVisitor zv = 
            (ZoomModemVisitor)v;
         zv.visit(this);
      }
      catch(ClassCastException e)
      {
      }
   }

   int configurationValue = 0;
}
— End of Listing —