What are the differences and similarities between a interface class and an abstract class?

Posted by Starx on Stack Overflow See other posts from Stack Overflow or by Starx
Published on 2010-06-13T05:42:07Z Indexed on 2010/06/13 5:52 UTC
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What are the differences and similarities between an interface class and an abstract class?

I mean when to use interface and when to use abstract class? On what conditions are one appropriate to use over another.

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