Circle, 26.06.2021

public class Circle {
    double radius = 1.0;

    public Circle() {
    }

    public Circle(double radius) {
        this.radius = radius;
    }

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

    public void setRadius(double radius) {
        this.radius = radius;
    }

    public double getArea() {
        return Math.PI * this.radius * this.radius;
    }

    public double getCircumference() {
        return 2 * Math.PI * this.radius;
    }

    public String toString() {
        return "Circle[radius=" + this.radius + "]";
    }
}