import java.util.*; 

class Circle {

  double radius;   // instance member (instance variable) 
  double area() { return Math.PI * radius * radius; } // instance member (instance method) 

  Circle(double r) { radius = r; Circle.howMany += 1; }

  static int howMany; 

  static int something;

  void report() { 
    System.out.println("Circle with radius " + this.radius + " and something == " + Circle.something); 
  }

}

class One {
  public static void main(String[] args) { // class member (class method) 
    Circle a = new Circle(0.5); 
    Circle b = new Circle(1.5); 
    Circle c = new Circle(2.5); 
    Circle d = new Circle(3.5); 
    System.out.println("I have created " + Circle.howMany + " circles so far."); 
  }
}