why we need interface?

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Hi,

we can use abstract class instead of interface. abstract class have abstract and non abstract methods are available. why we need interface. You can say like implement multiple interface in single class. we can have single abstract class and inherit to another class.
please explain me clearly with example.

Posted 30-Mar-15 21:06pm

Raj kumar.C

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Tomas Takac 31-Mar-15 3:13am

You can implement multiple interfaces but you can only inherit from one class.

Maciej Los 31-Mar-15 3:23am

Very interesting discussion: http://stackoverflow.com/questions/761194/interface-vs-abstract-class-general-oo

CPallini 31-Mar-15 4:11am

Beacuse abstract class is not enough abstract (or, put in another way, interfaces are sexy).

Rajeev Jayaram 31-Mar-15 5:07am

Well said :-)

Maciej Los 31-Mar-15 6:33am

:laugh:
The best answer i've ever seen ;)

BillWoodruff 31-Mar-15 5:14am

Is this your homework ? What thoughts do you have about interfaces now ?

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Maciej Los · Accepted Answer · 2015-03-30T21:17:00

Solution 1

Please, read this: Abstract Class versus Interface[^] and this: Recommendations for Abstract Classes vs. Interfaces[^]

Posted 30-Mar-15 21:17pm

Maciej Los

Updated 30-Mar-15 21:18pm

v2

Comments

CPallini 31-Mar-15 3:50am

5.

Maciej Los 31-Mar-15 6:32am

Thank you, Carlo ;)

King Fisher 31-Mar-15 4:01am

good one ;)

Maciej Los 31-Mar-15 6:32am

Thank you, King ;)