public class Heater {
    private double temperature;
   
    public Heater() {
        temperature = 15.00;
    }
 
    public void warmer() {
        temperature += 5.00;
    }
 
    public void cooler() {
        temperature -= 5.00;
    }
 
    public double getTemperature() {
        return temperature;
    }
}