Polymorphism in ABAP :
We cannot change the parameter signature i.e. the type,number and order of parameters has to be same while redefining.(Overloading is not possible,only Overriding is possible).
Static methods(CLASS methods) cannot be redefined.
Polymorphism in Java :
We can change the parameter signature while redefining a method(both overriding and overloading are possible).
Static methods can be overloaded and overrided.
Runtime polymorphism is possible in both ABAP and Java.
We cannot change the parameter signature i.e. the type,number and order of parameters has to be same while redefining.(Overloading is not possible,only Overriding is possible).
Static methods(CLASS methods) cannot be redefined.
Polymorphism in Java :
We can change the parameter signature while redefining a method(both overriding and overloading are possible).
Static methods can be overloaded and overrided.
Runtime polymorphism is possible in both ABAP and Java.