public class ShapesDemo
{
	public static void main(String[] args)
	{
		Shape[] shape= new Shape[3];
		
		shape[0]=new Circle(1.0);
		shape[1]=new Rectangle(1.0, 2.0);
		shape[2]=new Square(1.0);
		
		double area;
		for(int i=0; i<3; i++)
		{
			area   = shape[i].getArea();	

			System.out.println("Area   = " + area);
		}	
	}
}