Initializing Multiple Variables in a FOR Loop

I'm a student trying to figure out how to fix a seemingly simple problem. I keep getting an error while trying to initialize 2 variables in a FOR loop. I'm trying to create rows for a game board. Why am I getting this error? This is the method:

public String [] board; public void printBoard() < for(int i, j = 0; i < this.board.length; i++, j++) if(j >10) System.out.println(); else System.out.print(this.board[i]); > java:39: error: variable i might not have been initialized 

Judging by the code, you probably also need to split the loop, to have a nested loop, in order to reach all game board pieces. As is, you will only hit the diagonals.

In java everything is very well documented before doing for loop just see basic syntax , and still if by mistake there is any error if you paste it to google it would diffidently be a better option , still if you dont find solution the post here