public class Rectangle
{
	private double length;
	private double width;
	
	public Rectangle()
	{
		 length = 4;
		 width = 8;
	}
	
	public Rectangle (double length, double width)
	{
		this.length = length;
		this.width = width;
	}
	
	public double calcArea()
	{
		return (length * width);
	}
	
	public void doubleFactors()
	{
		length = length * 2;
		width = width * 2;
	}
	
	public String toString()
	{
		return("Length: " + length + " Width: " + width);
	}
}