/* Static variables example */

import java.util.*;

class Circle {

   private static int count = 0; // count is a class variable
   private float radius; // the only instance variable for this class

   public Circle () {
     count = count + 1;
     radius = 0;
   }

   public Circle (float rad) {
      count = count + 1;
      radius = rad;
   }

   void getData () {

     Scanner scan = new Scanner (System.in);

     System.out.print ("\nEnter radius:  ");
     radius = scan.nextFloat();
   }

   float computeCircumference () { 
     float circumference = (float) (2 * Math.PI * radius);
     return circumference;
   }

   float computeArea () {
     float area = (float) (Math.PI * radius * radius);
     return area;
   }

   static int getCount () {
     return count;
   }

   float getRadius () {
     return radius;
   }

}

class Circles {

   public static void main (String[] args) {

      Circle circle1 = new Circle ();
      Circle circle2 = new Circle (6);
      Circle circle3 = new Circle ();
      Circle circle4 = new Circle();

      circle1.getData();

      System.out.println("\n**************************");
      System.out.println("Statistics of circle1: ");
      System.out.println("----------------------");
      System.out.println("Radius        " + circle1.getRadius());
      System.out.println("Circumference " + 
                         circle1.computeCircumference());
      System.out.println("Area          " + 
                         circle1.computeArea());

      System.out.println("\n**************************");
      System.out.println("Statistics of circle2: ");
      System.out.println("----------------------");
      System.out.println("Radius        " + circle2.getRadius());
      System.out.println("Circumference " + 
                         circle2.computeCircumference());
      System.out.println("Area          " + 
                         circle2.computeArea());

      System.out.println("\nNumber of circles  " + Circle.getCount());

     
   }
}