If you refer to "table":
LastName = ["Sanchez";"Johnson";"Li";"Diaz";"Brown"];
Age = [38;43;38;40;49];
Smoker = logical([1;0;1;0;1]);
T = table(LastName,Age,Smoker);
>> T.Properties.VariableNames
ans =
1×3 cell array
{'LastName'} {'Age'} {'Smoker'}
>> T.Properties.VariableNames{2}
ans =
'Age'
If you refer to "uitable":
f = figure("Position",[200 200 400 150]);
dat = rand(3);
cnames = ["X-Data","Y-Data","Z-Data"];
rnames = ["First","Second","Third"];
t = uitable("Parent",f, "Data",dat, "ColumnName",cnames,...
"RowName",rnames, "Position",[20 20 360 100]);
>> get(t,"columnname")
ans =
3×1 cell array
{'X-Data'}
{'Y-Data'}
{'Z-Data'}
