// INHERIT5
// See $show$ below. This method is accessed from
// the actual object, which means that even though the
// code for $show$ is written in the superclass, 
// you have to pretend it is written in the subclass!

class A {
    public int x;
    public A(int x) { 
	this.x = x;
	System.out.println("x from the A constr: "+x);
	show();
    }
    public void show() {System.out.println("(A): "+x);}
}

class B extends A { 
    public B(int x) {
	super(x-1);
	this.x=x;
	show();
    }
}

public class inherit5 {
    public static void main(String[] args){
	
	System.out.println("\nTest 1:");
	B v1 = new B(2);
	System.out.println("v1 uses "+v1.getClass());
	System.out.println("accessing x: "+v1.x); 
	v1.show();

	System.out.println("\nTest 2:");
	A v2 = new B(2);
	System.out.println("v2 uses "+v2.getClass());
	System.out.println("accessing x: "+v2.x); 
	v2.show();
    }
}

/* output:
   Test 1:
   x from the A constr: 1
   (A): 1
   (A): 2
   v1 uses class B
   accessing x: 2
   (A): 2
   
   Test 2:
   x from the A constr: 1
   (A): 1
   (A): 2
   v2 uses class B
   accessing x: 2
   (A): 2
*/