Answer Posted / ram praswesh kumar

[1]:-> An abstract class contain abstract method and non-
abstract method, but In interface all method are implictly
abstract.
[2]:-> An abstract base class can have private,public and
protected access specifier but all member in interface are
implicitly public.
[3]:- A class can inherit only single abstract class but
can implement more than one interface.
[4]:- An abstract class can implement interface but
interface cannot extend abstract class even concrete class.

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