Interested to Buy Any Domain ? << Click Here >> for more details...
Tell me the scenario,Where we can use interfaces or
Abstract class.And What is the difference between
interfaces and abstract class?
- 5 Answers
- 19892 Views
- I also Faced
- E-Mail Answers
Answer Posted / kaushik thakrar
In relation to C# (not C++):
1. Interfaces are like abstract class where all member
functions as abstract but cannot have any data members,
constructors or destructors. Classes using interfaces are
forced to implement all the methods in the interface.
2. Does not implement any methods. ie only used as a
template for derived classes to use.
3. All members of interface are public. ie in Interface you
only have to state long Function(); but in a class you have
to state public abstract long Function();
4. A class can have multiple inheritence with an interface
but not a class.
5. Also structures in C# cannot inherit from other classes
of structures but can implement an interface allowing you
to implement more features to your class.
By using interfaces you are not making any assumptions
about the functionality. You want to make sure your classes
using the interfaces implement the functionality of all the
methods in your Interface.
With all above in mind you can probably find more uses for
an interface.
One example: You have many forms of communication like
FileIO or database or IPC. All these forms of communication
will need to features like Open and Close either a file or
a connection Read or write etc. You would then define an
interface with these features for your concrete classes.
You can then use the Interface as a base class pointer like
in C++ to access the derived class's functions.
| Is This Answer Correct ? | 10 Yes | 4 No |
Post New Answer View All Answers
hi all..i want to know oops concepts clearly can any1 explain??
What is polymorphism in oop example?
What is abstraction encapsulation?
Why do we need oop?
What is solid in oops?
What is encapsulation with real life example?
Who invented oop?
Plese get me a perfect C++ program for railway/airway reservation with all details.
What are the three main types of variables?
What is abstraction in oops with example?
What is polymorphism programming?
What is the difference between encapsulation and polymorphism?
What are functions in oop?
what is the sylabus for priliminaries?
What are different oops concepts?
