You are using wrong method names as James_D suggested in the comment. Maybe a bit more in detail:
colNome.setCellValueFactory(new PropertyValueFactory<ClientRow, String>("clienteNome"));
is linked to getClienteNome()
in your ClientRow class (which does not exist). So you will have to rename getclientNome()
to getClienteNome()
Same for the other methods. If this helped, don't forget to upvote James_D's comment.