/*
 * File: Square.java
 * Author: Java, Java, Java
 * Description: This class illustrates how inheritance works.
 *  The Square class extends the definition of the
 *  Rectangle class as a way of representing a simple
 *  geometric square. The Square class inherits the public methods
 *  its superclass (Rectangle). Note how a square is
 *  created by simply calling its superclass's constructor
 *  and passing it "side" as the value for both its length
 *  and width.
 *
 *  Given this definition, it will be possible to create 
 *  square instances and calculate their areas:
 *       Square square = new Square (100);
 *       System.out.println( "square's area is " + square.calculateArea() );
 */

public class Square extends Rectangle // Subclass of Rectangle
{
    public Square(double side)
    {
        super(side,side);        // Call Rectangle's Constructor
    }
} // Square