private void UpdateTemperature(object source, ElapsedEventArgs e)
        {
            switch (this.temperature)
            {
            case temperatureEnum.HOT:
                this.temperature = temperatureEnum.QUITEHOT;
                break;

            case temperatureEnum.QUITEHOT:
                this.temperature = temperatureEnum.NOTSOHOT;
                break;

            case temperatureEnum.NOTSOHOT:
                this.temperature = temperatureEnum.COLD;
                break;

            case temperatureEnum.COLD:
                break;

            default:
                this.temperature = temperatureEnum.HOT;
                break;
            }

            UpateTemperatureString();
        }
 public Coffee()
 {
     this._temperatuer = "";
     this.temperature  = temperatureEnum.HOT;
     SetTimer();
     UpateTemperatureString();
 }