class WaterSource{
    private String s;
    WaterSource(){
        System.out.println("WaterSource()");
        s = "Constructed";
    }
    public String toString(){
        return s;
    }
}

public class SprinklerSystem{
    private String value1,value2,value3,value4;
    private WaterSource source = new WaterSource();
    private int i;
    private float f;
    public String toString(){
        return 
            "value1 = " + value1 + " " +
            "value2 = " + value2 + " " +
            "value3 = " + value3 + " " +
            "value4 = " + value4 + " " +
            "i = " + i + " " + "f = " + f + " " +
            "source = " + source;
    }
    public static void main(String[] args){
        SprinklerSystem sprinklers = new SprinklerSystem();
        System.out.println(sprinklers);
    }
}