using Templates.Observer; class Client { public static void Main(){ WeatherCenter subj = new WeatherCenter(25.0F, 0.0F, 1020.0F); TemperatureWatcher o1 = new TemperatureWatcher(subj, 25.0F, "w1"), o2 = new TemperatureWatcher(subj, 25.0F, "w2"); subj.Attach(o1); subj.Attach(o2); subj.WeatherUpdate(23.0F, 0.0F, 1020.0F); subj.WeatherUpdate(23.0F, 0.0F, 1020.0F); subj.WeatherUpdate(23.0F, 0.0F, 1020.0F); subj.WeatherUpdate(24.0F, 0.0F, 920.0F); subj.WeatherUpdate(21.0F, 0.0F, 1050.0F); } }