Circle

package puck;

public class Circle {
    private static double PI = 3.14;
    private double radius;

    public Circle() {
        radius = 1;         //default radius
    }

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

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

    public double area() {
        double circleArea;

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

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

    public static void displayAreaFormula() {
        System.out.println("The formula for the area of a circle is a=Pi*r*r");
    }

    public boolean equals(Object obj) {
        Circle testObj = (Circle)obj;

        if (testObj.getRadius() == radius) {
            return(true);
        } else {
            return(false);
        }
    }

    public String toString() {
        String circleString;

        circleString = "Circle has radius " + radius;
        return(circleString);
    }
}