public StatisticsDisplay(WeatherData weatherData)
{
this.weatherData = weatherData;
weatherData.registerObserver(this);
}
public HeatIndexDisplay(WeatherData weatherData)
{
this.weatherData = weatherData;
weatherData.registerObserver(this);
}
public ForecastDisplay(WeatherData weatherData)
{
this.weatherData = weatherData;
weatherData.registerObserver(this);
}