public class GTMObserver implements GTM.TemperatureObserver{
    public GTMObserver(GTM gtm){
        gtm.observers.add(this);
        readFailures = 0;
    }
    public boolean checkReading(double temp){
        readFailures = 0;
        return (temp<15) || (temp>25);
    }
    int readFailures;
    public void observed(double temp){
        System.out.println("Got abnormal: " + temp);
    };
    
    public void noRead(){
        readFailures++;
        if ( readFailures >= 5){
            System.out.println("Failed reading 5 times");
            readFailures = 0;
        }
    };
}