Homework Java Overriding
<p>I have Super class RECTANGLE with 2 variables and a Child class SQUARE with 1 variable. I am using class Square to inherit the getArea() method and overide it fine. Eclipse editor gives me an error in my SQUARE class, "super(width, length);". LENGTH variable has an error that can be fixed with making it static in the RECTANGLE class, that's not what I desire I guess. My homework requires that class SQUARE has a constructor with 1 variable to multiply by  itself. What is the logical error in my code? </p>

<pre><code>public class Rectangle 
{

double width, length;

Rectangle(double width, double length) 
{
    this.width = width;
    this.length = length;
}

double getArea() 
{
    double area = width * length;
    return area;
}   

void show() 
{
    System.out.println("Rectangle's width and length are: " + width + ", " + length);
    System.out.println("Rectangle's area is: " + getArea());
    System.out.println();
}
}


public class Square extends Rectangle
{
double width, length;

Square(double width) 
{
    super(width, length);
    this.width = width;
}

double getArea() 
{
    double area = width * width;
    return area;
}   

void show() 
{
    System.out.println("Square's width is: " + width) ;
    System.out.println("Square's area is: " + getArea());
}
}


public class ShapesAPP 
{

public static void main(String[] args) 
{
    Rectangle shape1 = new Rectangle(5, 2);
    Square shape2 = new Square(5);
    shape1.show( );
    shape2.show( );
}

}
</code></pre>
