RectangleClass

class Rectangle
{
    //attributes must be private
    private double length, width;

    //default constructor
    public Rectangle()
    {
        //assign default values to attributes
        length = 1;
        width = 1;
    }

    //parameterized constructor
    public Rectangle(double len, double wid)
    {
        //assign parameter values to attributes
        length = len;
        width = wid;
    }

    //sets and gets for length and width
    public void setLength(double len)
    {
        length = len;
    }

    public double getLength()
    {
        return length;
    }

    public void setWidth(double wid)
    {
        width = wid;
    }

    public double getWidth()
    {
        return width;
    }

    //area is calculated, only needs get
    public double getArea()
    {
        return length * width;
    }
}//end class