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Downcasting.java

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class A

{

int a;

public A()

{

a = 5;

}

public void disp()

{

System.out.println(a);

}

}

class B extends A

{

int b;

public B()

{

super();

b = 10;

}

public void disp()

{

System.out.println(b);

}

}

public class Downcasting

{

public static void main(String []args)

{

A a = new A();

B b = new B();

b = (B)a;

a.disp();

b.disp();

}

}