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Java Forum / General / October 2005

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what is the practical difference between an abstract class and an interface?

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sankar_battula@yahoo.co.in - 26 Oct 2005 06:15 GMT
Hi!
> Actually java soft has provided an interface with the intention that,
> when we know the method names and we don't know the implementations we
> will write them in an interface.
> when we don't know the implementation of some methods of interface and
> we will put them in abstract class.
> Even an interface can be converted as an abstract class and
> viceversa .
> Then where do interface is getting an EDGE over an abstarct class?
Ingo R. Homann - 26 Oct 2005 12:16 GMT
Hi,

>>Even an interface can be converted as an abstract class and
>>viceversa .
>>Then where do interface is getting an EDGE over an abstarct class?

In short:

The advantage of an interface is that you can implement several
interfaces, but you can only extend one class.

Ciao,
Ingo


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