public class Shape
{
    protected numSides = 0;
    protected color = null;

    public Shape()
    {
    }

    public void setNumSides(int newNumSides)
    {
        this.numSides = newNumSides;
    }

    public int getNumSides()
    {
        return this.numSides;
    }

    public void setColor(String newColor)
    {
        this.color = newColor;
    }

    public String getColor()
    {
        return this.color;
    }

    public double calculateArea()
    {
        return 0;
    }
}