public class Circle 
{
    public double radius = 1;       /** The radius of this circle */

    // Class with main( ) method can be run...
    public static void main(String[] args) 
    {                                      
        Circle circle1 = new Circle();     
        Circle circle2 = new Circle(2);    
    }        

    public Circle()                 /** Constructor 1 for a circle object */
    { 

    }

    public Circle(double newRadius) /** Constructor 2 for a circle object */
    {
        radius = newRadius;
    }

    public double getArea()      /** Return the area of this circle */
    {
        return 3.14159 * radius * radius;
    }

    public void setRadius(double newRadius) /** Set new radius for this circle */
    {
       radius = newRadius;
    }
}