Untitled

public mySphere(double diameter) 
 {
        this.diameter = diameter;
    }

    public double getDiameter() 
    {
        return diameter;
    }

    public void setDiameter(double diameter)
     {
        this.diameter = diameter;
    }

    public double getVolume()
     {
        double radius = diameter / 2;
        return (4.0 / 3.0) * Math.PI * Math.pow(radius, 3);
    }

    public double getSurfaceArea() 
    {
        double radius = diameter / 2;
        return 4 * Math.PI * Math.pow(radius, 2);
    }

    public String toString() 
    {
        return "Sphere with diameter " + diameter;
    }
}