public class Demo2
{
    public static void main(String[] args)
    {
	Circle c1 = new Circle("red", 1);
	Circle c2 = new Circle("red", 2);
	Rectangle r1 = new Rectangle("red", 1, 1);
	Rectangle r2 = new Rectangle("red", 2, 2);

        System.out.println( smallerArea( c1, c2 ) );
        System.out.println( smallerArea( r1, r2 ) );
        System.out.println( smallerArea( c2, r1 ) );
        System.out.println( smallerArea( r2, c1 ) );

    }

    public static <T> boolean smallerArea( T o1, T o2 )
    {
        return o1.getArea() < o2.getArea();
    }
}