Simple Tic Tac Toe class

[hydride]

TicTacToeGame.class has only one method, whose public interface is

public String makeMark(int row, int column)

Method makeMark returns: a null if the cell indicated by row and column has already been marked an X if it is X's turn (X gets to go first) a Y if it is Y's turn
Thus makeMark will have to keep of marks made previously and return the appropriate string for the requested cell.

Here's what I have so far. I want to first work with the "X" before checking the spaces.

public class TicTacToeGame {
	public String makeMark(int row, int column){
		
		
		boolean arr[][] = null;

		for (row=0; row<=2; row++){
			for (column=0; column<=2; column++)
			{
				if (arr[row][column] = true)
				{
					System.out.println("X");
				}
			}
		}
			return null;

		
	}
	}

[Fubarable]

You're getting null pointer exceptions aren't you? You're array is null, and that won't work. I don't think an array of boolean will work regardless since boolean only holds two values: true and false, and you need 3 values, empty, x and y. Myself, I'd use an array of an Enum, but you could use an int array as well.

[hydride]

Well first I want to check to see if the spaces are empty first. That's why i think i would only need true and false. The 3 values would come later.

[Fubarable]

Well first I want to check to see if the spaces are empty first. That's why i think i would only need true and false.

This makes no sense.
1) First off, are you getting a nullpointerexception?

2) Having a null array tells you nothing about whether spaces are empty or not.

3) How will you tell whether an x or an o is in the space? Why not implement that now?

4) Then what is your current question?