Object-Oriented Application Architecture

class LineOfSquaresOOAA
{
// main method
   static public void main (String args[])
   {
      LineOfSquares los = new LineOfSquares();
      IO.print("The perimeter of the line of squares is ");
      IO.println(los.perimeter());
   }
}

class LineOfSquares
{
// instance variables
   private int nrSquares;
   private double squareSide;

// constructor
   public LineOfSquares()
   {
      IO.print("How many squares in the line? ");
      nrSquares = IO.read_int();
      IO.print("What is the area of the line of squares? ");
      double lineArea = IO.read_double();
      double squareArea = lineArea / nrSquares;
      squareSide = Math.sqrt(squareArea);
   }

// other methods

   public double perimeter()
   {
      return squareSide * eeCount();
   } 

   private int eeCount()
   {
      return ( ( nrSquares * 2 ) + 2 );
   }  

      
}