/**
   This class simply tests the A4Checkerboard class by repeatedly
      constructing a checkerboard and drawing it
*/


public class A4
{

   /**
       @param args is ignored
   */

   public static void main(String[] args)
   {  

      A4Checkerboard board = new A4Checkerboard('X','O');
      board.draw();
      System.out.println();
      
      board = new A4Checkerboard('@','+');
      board.draw();
      System.out.println();

      board = new A4Checkerboard();
      board.draw();

      System.out.println();

      board = new A4Checkerboard();
      board.draw();
      System.out.println();

      board = new A4Checkerboard();
      board.draw();
   }
}