Listing 4: 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) 
   {v.visit(this);}

   int configurationValue = 0;
}
— End of Listing —