/**
 * 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));
	}
}