/*****************************************************/
// INHERIT2
// constructors

class A {
    public int x;
    public A(int x) {
	this.x=x;
    }
}

class B extends A {
    public int y;
    public B(int x) {
	super(x);
	this.y = x;
    }
    public B(int x,int y) {
	this(x);
	this.y = y;
    }
}

public class inherit2 {
    public static void main(String[] args) {
        B b1 = new B(1);
	System.out.println("1st: "+b1.x+" "+b1.y);
        B b2 = new B(2,3);
        System.out.println("2nd: "+b2.x+" "+b2.y);
    }
}

/* output:
   1st: 1 1
   2nd: 2 3
*/