public void receivedNegotiation(int negotiation_code, int option_code)
    {
        String command = null;
        if(negotiation_code == TelnetNotificationHandler.RECEIVED_DO)
        {
            command = "DO";
        }
        else if(negotiation_code == TelnetNotificationHandler.RECEIVED_DONT)
        {
            command = "DONT";
        }
        else if(negotiation_code == TelnetNotificationHandler.RECEIVED_WILL)
        {
            command = "WILL";
        }
        else if(negotiation_code == TelnetNotificationHandler.RECEIVED_WONT)
        {
            command = "WONT";
        }
        System.out.println("Received " + command + " for option code " + option_code);
   }