Consider this code snippet:

Consider this code snippet:

abstract class Shape {
    abstract double area();
}
class Circle extends Shape {
    double radius;
    Circle(double r) { radius = r; }
    double area() { return 3.14 * radius * radius; }
}
public class Main {
    public static void main(String[] args) {
        Shape s = new Circle(2);
        System.out.println(s.area());
    }
}

What is the output?