A little bit confusion about enthuware.ocajp.i.v8.2.1478

[klhlubek]

It will compile if getId method in PremiumAccount is replaced with: public String getId(){ super.getId(); }
You cannot use super keyword to call a method defined in the super interface.

Yes, in this context it is right, but it would be surely better if you write, that abstract methods can not have a body, because this would be the general problem in this question. ( But this is only a tipp from myself )

[admin]

Explanation has been updated to make it clearer.
thank you for your feedback!