P1.java

class Circle{
	public int radius;
	Circle(){
		System.out.println("I am not parametrized Constructor");
	}
	Circle(int r){
		System.out.println("I am the Circle Parameterized Constructor");
		this.radius=r;
	}
	public double area() {
		return Math.PI*this.radius*this.radius;
	}
	
}
class Cylinder extends Circle {
	public int height;
	
	Cylinder(int r,int h){
		
		super(r);
		System.out.println("I am Cylinder Parametrized Constructor");
		this.height=h;
		
	}
	public double Volume() {
		return Math.PI*this.radius*this.radius*this.height;
		
	}
	
}
public class P1 {

	public static void main(String[] args) {
		//Circle obj=new Circle(12);
		Cylinder r=new Cylinder(12,16);
	}

}