Interface vs Abstract Class

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I want to know the difference b/w interface and abstract class.
I know the difference that Interface can't have concrete methods but abstract class can have concrete methods.
Also one class can implement more then one interfaces while it can inherit only one abstract class.

What If I don't have to implement multiple inheritance, neither want to provide default behaviour or my behaviour is changing.
If have pure abstract class(i.e. without any concrete method) and I also have option of using interface, then what is the best to use and why??

Posted 7-Aug-13 1:26am

userBeginner

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2 solutions

Solution 2

There is tons of information available on the internet and on this site itself.
Try http://www.codeproject.com/search.aspx?q=interface+versus+abstract+class&x=0&y=0&sbo=kw&usfc=false[^].

Posted 7-Aug-13 1:40am

Abhinav S

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Maciej Los 7-Aug-13 7:43am

Short and to the point!
+5

Abhinav S 7-Aug-13 7:45am

Thank you.

Manas Bhardwaj 7-Aug-13 13:57pm

That's the way to solve a problem. +5!

Abhinav S 7-Aug-13 22:56pm

Thank you.

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Maciej Los · Accepted Answer · 2013-08-07T01:30:00

Solution 1

Start here: Abstract Class versus Interface[^], then use Google ;)

Posted 7-Aug-13 1:30am

Maciej Los

Comments

Abhinav S 7-Aug-13 7:45am

My 5. Nothing better than doing a search.

Maciej Los 7-Aug-13 7:52am

Thank you, Abhinav ;)

Manas Bhardwaj 7-Aug-13 13:58pm

Google is always correct :) +5!

Maciej Los 7-Aug-13 14:53pm

Thank you, Manas ;)