When one must use abstract class and at what situation one must use Interface.

Interview Candidate
Oct 14th, 2005
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Lavanya.G

Oct 28th, 2005

Hi,
Answer:
Interface :Interface is having Abstract methods only(i.e no implemention for that method).Any one(Class) can provide implementation for that methods.
Interface can be used for multiple inheritance.
Abstract Class:A Class which contain atleast one abstract method(i.e no implementation for that method) as well as concrete method s also.