public class Board
{

    private Cell[][] gameBoard;

    /**
     * Create the grid and assign objects to squares.
     */
    public Board()
    {
        gameBoard = new Cell[3][3];
        for (int row = 0; row < 3; row++) {
            for (int column = 0; column < 3; column++) {
                gameBoard[row][column] = new Cell();
            }
        }
    }

    public void changeState(int row, int column, int state)
    {
        // check, if parameters passed are not out of array bounds.
        if ((row > 0) && (row < 4) && (column > 0) && (column < 4)) {
            gameBoard[row-1][column-1].setState(state);
        }
        int z = gameBoard[row-1][column-1].getState();
        System.out.println("0");
    }
}