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Question 
Contrast the use of an abstract base class against an interface?
 Question Submitted By :: .NetGuru
I also faced this Question!!     Rank Answer Posted By  
 
  Re: Contrast the use of an abstract base class against an interface?
Answer
# 1		 
Abstract classes can provide implementations for methods and
properties. Interfaces only provide required declarations.
 
Is This Answer Correct ?    7 Yes 0 No
Kavita Sharma
 
  Re: Contrast the use of an abstract base class against an interface?
Answer
# 2		 
A class can inherit only one absatract class, whereas the a 
class can inherit more than one interface.

An abstract class can have abstract as well as non abstract 
methods whereas the interface can have only the abstract 
methods.
 
Is This Answer Correct ?    4 Yes 4 No
Anbazhagan Vv
 
 
 
  Re: Contrast the use of an abstract base class against an interface?
Answer
# 3		 
Basically both Interfaces and Abstract class sit on top. An
abstract class can have defintion and body. It's also used
when we need to implement polymorphism (Contain at least one
virtual method). However an interface contains only
declaration. 

An Abstract inherit a class, an abstract class and implement
an interface. But interface can only implement another
interface.
 
Is This Answer Correct ?    2 Yes 1 No
Abhishek
 
  Re: Contrast the use of an abstract base class against an interface?
Answer
# 4		 
An abstract class can have abstract as well as non abstract 
methods whereas the interface can have only the abstract 
methods. 
An Abstract inherit a class, an abstract class and implement
an interface. But interface can only implement another
interface.
 
Is This Answer Correct ?    3 Yes 3 No
Rajeev Kumar Singh
 

 
 
 
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