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inheritanceMystery

Author: Roy McElmurry

Assume that the following classes have been defined:

public class Denny extends John {
    public void method1() {
        System.out.print("denny 1 ");
    }
    public String toString() {
        return "denny " + super.toString();
    }
}
public class Cass {
    public void method1() {
        System.out.print("cass 1 ");
    }
    public void method2() {
        System.out.print("cass 2 ");
    }
    public String toString() {
        return "cass";
    }
}
public class Michelle extends John {
    public void method1() {
        System.out.print("michelle 1 ");
    }
}
public class John extends Cass {
    public void method2() {
        method1();
        System.out.print("john 2 ");
    }
    public String toString() {
        return "john";
    }
}

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

Cass[] elements = {new Cass(), new Denny(), new John(), new Michelle()};
for (int i = 0; i < elements.length; i++) {
    elements[i].method1();
    System.out.println();
    elements[i].method2();
    System.out.println();
    System.out.println(elements[i]);
    System.out.println();
}
elements[0] : Cass
elements[1] : Denny
elements[2] : John
elements[3] : Michelle

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