Program to use super to access super class instance variables in Java

//Program to use super to access super class instance variables 
//when sub class instance variables hides the super class instance variables.
class A 
{
int x;
}
class B extends A 
{
int  x;   // this x hides the x in A
B(int a, int b) 
{
 super.x = a;   // x in A
 x = b;    // x in B
}
void show() 
{
 System.out.println("x in superclass: " + super.x);
 System.out.println("x in subclass: " + x);
}
}
class  HideSuperClassVar 
{
public static void main(String args[ ]) 
{
 B ob = new B(1, 2);
 ob.show();
}
}
 
Output:
x in superclass: 1
x in subclass: 2