Difference between Abstract class and interface

[vishist]

Hi,
Can you let me know the difference between Abstract class and
interface. I did research on the topic and found it helpful. Well, the
refined question I have is
1. Is there any difference between abstract class for which all the
methods are declared abstract and then an interface. I know that with
interface, multiple inhertiance can be achieved.
Can you please tell me in object tree/method invocation view.

thanks in advance

 

[Raanan]

Well,

I'm not an expert but if I remmber correctly..

the interface is only definitions of functions..
a new class can implements mulitiple interfaces...

an abstract class is like an unfinnished class... lets you implement
some of the functions by your self but some of the functions might be
already implemented and even private.
and I think you can use only abstarct class to father your new class.

Raanan,
http://www.infoservicesonline.com

 

[impaler]

Hi,
Can you let me know the difference between Abstract class and
interface.

http://mindprod.com/jgloss/interfacevsabstract.html

 

[Tor Iver Wilhelmsen]

Can you let me know the difference between Abstract class and
interface.

An abstract class can contain method implementation, instance fields,
constructors and static methods. An interface cannot. An abstract
class is part of the single-inheritance chain, an interface is not.