public class TicTacToe
{
    TicTacToe()
    {
        board = new char [3] [3];
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                board[i][j] = EMPTY;
            }
        }
        
        turn = X;
    }
    
    public char getTurn ()
    {
        return turn;
    }
    
    public boolean isEmpty (int x, int y)
    {
        return (board[x][y] == EMPTY);
    }
    
    public String getPlay (int x, int y)
    {
        char result = board[x][y];
        return Character.toString(result);
    }
    
    public void makeGuess (int x, int y)
    {
        if (board[x][y] == EMPTY)
        {
            board[x][y] = turn;
            turn = otherTurn (turn);
        }
    }
    
    private char otherTurn (char turn)
    {
        if (turn == X)
        {
            return O;
        }
        else
        {
            return X;
        }
    }
 
    
    private char [] [] board;
    private char turn;
    private static final int EMPTY = 'e';
    private static final int X = 'X';
    private static final int O = 'O';
}