Interested to Buy Any Domain ? << Click Here >> for more details...
Difference between abstract class and interface
- 100 Answers
- 301761 Views
- Accenture, Altruist, Baba Group, CitiGroup, Fiserv, HCL, IBM, iGate, Infosys, Jean Martin, Karthik Industries, Microsoft, OnDLine, TCS, I also Faced
- E-Mail Answers
Answer Posted / poulami
Interface vs. Abstract class
1.Multiple inheritance
A class may inherit several interfaces.
A class may inherit only one abstract class.
2.Default implementation
An interface cannot provide any code, just the signature.
An abstract class can provide complete, default code and/or
just the details that have to be overridden.
3.Access Modfiers
An interface cannot have access modifiers for the subs,
functions, properties etc everything is assumed as public
An abstract class can contain access modifiers for the subs,
functions, properties
4.Core VS Peripheral
Interfaces are used to define the peripheral abilities of a
class. In other words both Human and Vehicle can inherit
from a IMovable interface.
An abstract class defines the core identity of a class and
there it is used for objects of the same type.
5.Homogeneity
If various implementations only share method signatures then
it is better to use Interfaces.
If various implementations are of the same kind and use
common behaviour or status then abstract class is better to use.
6.Speed
Requires more time to find the actual method in the
corresponding classes.
Abstrct classes are fast
7.Adding functionality (Versioning)
If we add a new method to an Interface then we have to track
down all the implementations of the interface and define
implementation for the new method.
If we add a new method to an abstract class then we have the
option of providing default implementation and therefore all
the existing code might work properly.
8.Fields and Constants
No fields can be defined in interfaces
An abstract class can have fields and constrants defined
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How can we integrate atlas with web services?
I want to create a project like google maps how can we do that with atlas?
Explain is development of a mobile web application with asp.net is very easy? : Microsoft dot net mobile
What is the difference between primary & secondary storage device? : Dot net architecture
Define cache? : Dot net architecture
how to change the title of my window?
When do I need to use gc.keepalive?
What is the difference between an application and a program?
Difference between throw exception and rethrowing ?
Why only boxed types can be unboxed?
Explain the race around condition? : Dot net architecture
The maximum report processing jobs limit configured by your system administrator has been reached.How I can Solve this problem when i using crystal report to load from my application.
What is .net mobile input validation. : Microsoft dot net mobile
Explain hard disk and what is its purpose? : Dot net architecture
How cache coherency is eliminated? : Dot net architecture
