Answer Posted / prathap

In Abstract class we are having both concrete methods and
abstract methods.Concrete methods means providing
implementation for that method but abstract method cant
provide implemention for that method.we can implement
abstract methods in the sub class..
In Interface we are having un implemented methods but we
can provide impletion for that methods in the implementation
class...
the main difference is Abstract class is having implemented
and un implemented methods but an interface is having only
unimpleted methods ..

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