Answer Posted / vanam santhosh

1.All the methods declared in interface are abstact whare
as Abstract must have atleast one abstact and others may
Concrete methods.
2.In abstact class Keyword is abstract must be used for the
methods.In Interface need not use the Keywords.
3.Abstact class must have subclass. where ads in Interfcs
need not have subclass.
4.In Abstarct class can extend only one class.where as in
Interface we can extend more than One Interface

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