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inheritanceMystery

Author: Marty Stepp

Assume that the following classes have been defined: 

public class Dog extends Cat {
    public void m1() {
        m2();
        System.out.print("dog 1   ");
    }
}

public class Lion extends Dog {
    public void m2() {
        System.out.print("lion 2   ");
        super.m2();
    }

    public String toString() {
        return "lion";
    }
}

public class Cat {
    public String toString() {
        return "cat";
    }

    public void m1() {
        System.out.print("cat 1   ");
    }

    public void m2() {
        System.out.print("cat 2   ");
    }
}

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

Cat[] elements = {new Dog(), new Cat(), new Lion()};
for (int i = 0; i < elements.length; i++) {
    elements[i].m1();
    System.out.println();
    elements[i].m2();
    System.out.println();
    System.out.println(elements[i]);
    System.out.println();
}
elements[0]: Dog
elements[1]: Cat
elements[2]: Lion

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