Figured it out for myself so if anyone wants to put column titles here:
C = java_array('java.lang.String',4);
C(1) = java.lang.String('Apple');
C(2) = java.lang.String('Bear');
C(3) = java.lang.String('Cat');
C(4) = java.lang.String('Dog');
T = cell(C)
xlswrite(filenameA,T',1,'A1')