2. Predict the output of the following code: (5+5 points)

a. class X

{

//Class X Members

}

class Y

{

//Class Y Members

}

class Z extends X, Y

{

//Class Z Members

}

____________________________________________________________________

b. class A

{

int i = 20;

}

class B extends A

{

int i = 400;

}

public class MainClass

{

public static void main(String[] args)

{

A a = new B();

System.out.println(a.i);

}

}