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inheritance mystery

Author: Kimberly Todd

Assume that the following classes have been defined: 

public class Ice extends Fire {
    public void method1() {
        System.out.print("Ice 1 ");
    }
}

public class Rain extends Fire {
    public String toString() {
        return "Rain";
    }
    
    public void method1() {
        super.method1();
        System.out.print("Rain 1 ");
    }
}

public class Fire {
    public String toString() {
        return "Fire";
    }
    
    public void method1() {
        method2();
        System.out.print("Fire 1 ");
    }
    
    public void method2() {
        System.out.print("Fire 2 ");
    }
}

public class Snow extends Rain {
    public void method2() {
        System.out.print("Snow 2 ");
    }
}

Given the classes above, what output is produced by the following code? 

Fire[] elements = {new Fire(), new Snow(), new Rain(), new Ice()};
for (int i = 0; i < elements.length; i++) {
    System.out.println(elements[i]);
    elements[i].method1();
    System.out.println();
    elements[i].method2();
    System.out.println();
    System.out.println();
}
elements[0]: Fire
elements[1]: Snow
elements[2]: Rain
elements[3]: Ice

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