/**
 * Circle class.
 */
public class Circle {
    private static final double PI = 3.14;
    private double radius;

    /**
     * constructor
     * pre: none
     * post: A Circle object created. Radius initialized to 1.
     */
    public Circle() {
        radius = 1;     //default radius
    }


    /**
     * Changes the radius of the circle.
     * pre: none
     * post: Radius has been changed.
     */
    public void setRadius(double newRadius) {
        radius = newRadius;
    }


    /**
     * Calculates the area of the circle.
     * pre: none
     * post: The area of the circle has been returned.
     */
    public double area() {
        double circleArea;

        circleArea = PI * radius * radius;
        return(circleArea);
    }


    /**
     * Returns the radius of the circle.
     * pre: none
     * post: The radius of the circle has been returned.
     */
    public double getRadius() {
        return(radius);
    }
    public static double circumference(int getRadius, double PI) {
        double circumference;
        circumference = 2 * PI * getRadius;
        return(circumference);
    }
    public static void main (String[] args) {
        Circle spot = new Circle();

        spot.setRadius(3);
        System.out.println("Circle radius: " + spot.getRadius());
        System.out.println("Circle circumference: " + spot.circumference(getRadius, PI));
    }
}