What will be the output of this Java code?

What will be the output of this Java code?

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 Test {
  public static void main(String[] args) {
    Shape s = new Circle(2);
    System.out.println(s.area());
  }
}