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An abstract class is inherited, an Interface also
inherited(multiple inheritance), How it differences.

Answers were Sorted based on User's Feedback



An abstract class is inherited, an Interface also inherited(multiple inheritance), How it differenc..

Answer / kidkid

An abstract class has its properties but an interfaces has
only method (abstract method).

However A class can inherit only one abstract class but can
inherit one or more interface.

Is This Answer Correct ?    10 Yes 1 No

An abstract class is inherited, an Interface also inherited(multiple inheritance), How it differenc..

Answer / ashish p

Following are the differences between abstract and
interfaces :-
1) Abstract classes can have concrete methods while
interfaces have no methods implemented.
2) Interfaces do not come in inheriting chain, while
abstract classes come in inheritance

Is This Answer Correct ?    1 Yes 0 No

An abstract class is inherited, an Interface also inherited(multiple inheritance), How it differenc..

Answer / raman sharma

Abstract class is just like a normal class but we cannot create its object. Abstract class has abstract methods as well as the concrete methods.

Interface has the only abstract properties and methods means they are not defined in the interface but are implemented in the child classes

Is This Answer Correct ?    2 Yes 2 No

An abstract class is inherited, an Interface also inherited(multiple inheritance), How it differenc..

Answer / priya arun

abstract class is just like a normal class ,but we can't
instantiate an abstract class.
One class can inherit one abstract class.

but interface is just define the signature..it doesnt have
any body.So the methods declared in the interface must
implement in the derived class.

Once we defined the interface any number of class can
implement it...

a class can implement more than one interface also.Through
this also we can achieve multiple inheritance in .net.

Is This Answer Correct ?    0 Yes 0 No

An abstract class is inherited, an Interface also inherited(multiple inheritance), How it differenc..

Answer / prem

Abstract Class

An abstract class is a special kind of class that cannot be
instantiated. So the question is why we need a class that
cannot be instantiated? An abstract class is only to be
sub-classed (inherited from). In other words, it only allows
other classes to inherit from it but cannot be instantiated.
The advantage is that it enforces certain hierarchies for
all the subclasses. In simple words, it is a kind of
contract that forces all the subclasses to carry on the same
hierarchies or standards.

Interface.............

An interface is not a class. It is an entity that is defined
by the word Interface. An interface has no implementation;
it only has the signature or in other words, just the
definition of the methods without the body. As one of the
similarities to Abstract class, it is a contract that is
used to define hierarchies for all subclasses or it defines
specific set of methods and their arguments. The main
difference between them is that a class can implement more
than one interface but can only inherit from one abstract
class. Since C# doesn&#65533;t support multiple inheritance,
interfaces are used to implement multiple inheritance.

Is This Answer Correct ?    0 Yes 0 No

An abstract class is inherited, an Interface also inherited(multiple inheritance), How it differenc..

Answer / abhijit

Interface can not be inherited.

Is This Answer Correct ?    2 Yes 19 No

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