Answer / ravikiran(aptech mumbai)

Interface is purely abstract.all the methods declared inside
the interfaqce are by default abstract and public.

where as an abstract class can have abstarct as well as non
abstact methods.

And an abstract class may heve no abstract methods at all.
we will do like this to restrict the creation of instance
ofthat particular class.

Answer / sads

dsadsa

Answer / abnish kumar rajput

Abstract class is a class with may having abstract methods
or not.Whereas Interface supports multiple inheritences of
classes note that java does not directly support this concept.

Answer / janet

1.All the methods declared inside an interface are abstract
where as abstract class must have atleast one abstract
method and others may be concrete or abstract.

2.In abstract class ,keyword abstract must be used for the
methods where as interface we need not use that keyword for
the methods.

3. Abstract class must have subclass where as interface
can't have subclasses.

Answer / anjani kumar jha

Interface means 100% abstracness............
Abstract class means may be 100% abstracness............

There r lots of difference b/w but 2 major difference is

1)Abstract class is Tightly coupled with class and
interface is loosely coupled.

2)Interface is used to support multiple inheritance in
java...think hard.......

Thanks and Regards
Anjani Kumar Jha
9623154095

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