public int []nextWinningMove(int token) {

  for(int i=0;i<3;i++)
   for(int j=0;j<3;j++)
    if(getBoardValue(i, j)==EMPTY) {
     board[i][j] = token;
     boolean win = isWin(token);
     board[i][j] = EMPTY;
     if(win) return new int[]{i,j};
    }

  return null;
    }