I have the class
public class Conhecimento{}
This class extends from another class "CteProc"
Only this CteProc class has "versions" example.
v200.CteProc
v300.CteProc
My problem is that in creating the Knowledge class I need to tell you if it will extend from CteProc 200 or CteProc 300 according to the version I receive. I wanted to know if it's possible to do this, change the extends or leave dynamic.
It is not possible for a class to inherit from A and at some point inherit from B.
If I understand what you want, use one of these approaches:
If the classes v200.CteProc and v300.CteProc implement a same interface (CteProc), that is, the two classes have the same methods but with different implementations.
Implement the Knowledge class in order to receive an object from a class that implements the CteProc interface.
According to "the version I get" you pass an object v200.CteProc or v300.CteProc.
Internally, the Knowledge class uses the interface methods whose implementation is given by the passed object.
If the v200.CteProc and v300.CteProc classes do not implement a same interface, that is, the two classes have different methods (names or signatures).
Extract an interface from the Knowledge class.
Write two classes that implement this interface: v200.Knowledge and v300.Knowledge.
For processing, the v200.Cognition class will internally use a v200.CteProc object and the v300.Contain a v300.CteProc.
According to the version I receive, you use an object v200.Knowledge or v300.Knowledge.
Customers of the old Knowledge class should refer to the interface.