Using abstract class and Interface

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Akhileshwar

Using abstract class and Interface
1 Answer(s) 5 years and 3 months ago
Posted in : Java Beginners

when to use abstract class and when to use interface? give me answer with real time scenario?

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February 28, 2008 at 7:44 PM

Hello,

When to Use Interfaces
Two Important Differences Between Interfaces and Abstract Classes

* Interfaces provide a form of multiple inheritance. A class can extend only one other class.
* Interfaces are limited to public methods and constants with no implementation. Abstract classes can have a partial implementation, protected parts, static methods, etc.

Interface or Abstract Class

* These two differences usually direct the choice.
* If multiple inheritance is important or even useful interfaces are used.
* Abstract class lets you define some or all of the implementation.
* Any major class you expect to be extended should be an implementation of an interface.

Thanks

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