public class Square extends TwoDimensionalShape
{
      double sideOfSquare, squareArea; 
	 
	  public Square (double side)
	  {
	      super("Square");
			sideOfSquare = side;
	  }
	  
	  public double getArea ()
	  {
	     squareArea = sideOfSquare*sideOfSquare;
		  return squareArea;
	  }
  } // end Square