Circle 3

package circle.pkg1;

/**
 *
 * @author Monty
 */
public class Circle1 {

    private static final double PI = 3.14;
    private double radius;

    public Circle1() {
        radius = 1;
    }

    public Circle1(double r) {
        radius = r;
    }

    public void setRadius(double newRadius) {
        radius = newRadius;
    }

    public double circumf() {
        double circumference;
        circumference = 2 * PI * radius;
        return(circumference);
    }

    public double getRadius() {
        return(radius);
    }

    public static void formula(){
        System.out.println("Area formula: a = Pi * r * r");
    }

    public static void main(String[] args) {
        Circle1 spot = new Circle1();

        spot.setRadius(3);
        System.out.println("Circle radius: " + spot.getRadius());
        System.out.println("Circumference: " + spot.circumf());
        Circle1.formula();
    }

}