How to use itext 5 accent

I'm not able to use accent on itext 5. I took a look at the examples on the site, but I did not find it. Would anyone know how to use it? It is being used on Android. The fields of the model class fed by the android routines to accentuation works correctly. Now when you create a new String it does not work. I already tried to do the string charset for utf-8 or ISO, I downloaded other fonts, I used arial as well and it does not work.