public class CircleDemo {

public static void main(String[] args) {

Circle unitCircle = new Circle();

Circle myCircle = new Circle(5);

Circle yourCircle = new Circle(12.75);

printCircleData(unitCircle);

printCircleData(myCircle);

printCircleData(yourCircle);

}//end main

public static void printCircleData(Circle circle) {

System.out.println("r = " + circle.getRadius());

System.out.println("C = " +

String.format("%.2f",circle.circumference())

);

System.out.println("A = " +

String.format("%.2f", circle.area())

);

System.out.println();

}//end printCircleData

}//end CircleDemo