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Prog1.java
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Prog1.java
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public class Prog1
{
public static void main(String ags[])
{
Parent obj=new Parent();
Parent ref;
ref=obj;
ref.show();
Child1 obj1=new Child1();
Child1 ref1;
ref1=obj1;
ref1.show();
Child2 obj2=new Child2();
Child2 ref2;
ref2=obj2;
ref2.show();
Child3 obj3=new Child3();
Child3 ref3;
ref3=obj3;
ref3.show();
}
}
class Parent
{
int x;
Parent()
{
x=10;
}
public void show()
{
System.out.println("The value of x is ="+x);
}
}
class Child1 extends Parent
{
int a;
Child1()
{
super();
a=5;
}
public void show()
{
System.out.println("The value of x is ="+x);
System.out.println("The value of a ="+a);
}
}
class Child2 extends Parent
{
int b;
Child2()
{
super();
b=15;
}
public void show()
{
System.out.println("The value of x is ="+x);
System.out.println("The value of b ="+b);
}
}
class Child3 extends Parent
{
int c;
Child3()
{
super();
c=20;
}
public void show()
{
System.out.println("The value of x is ="+x);
System.out.println("The value of c ="+c);
}
}