Comments on: Difference between a Java interface and a Java abstract class?

By: rajesh

rajesh — Wed, 28 Jul 2010 11:12:59 +0000

thanks for giving expalnation and i need more details about core java

By: abubakar

abubakar — Tue, 27 Apr 2010 20:00:38 +0000

good i lern very much from this sight

By: rakesh

rakesh — Tue, 09 Mar 2010 10:50:26 +0000

simple….read SCJP kathy sierra’s book….best as far as i know…

By: Arun Pratap Singh

Arun Pratap Singh — Sat, 06 Mar 2010 08:43:04 +0000

The point no 8.
“In comparison with java abstract classes, java interfaces are slow as it requires extra indirection.”

What is this “extra indirection”. I have seen same thing in other sites without clear information.

Also How can we prove that java interfaces are slow than abstract classes.

By: Anonymous

Anonymous — Thu, 11 Feb 2010 12:41:01 +0000

What Unknown is saying correct.
One more point – If I dont want multiple inheritence then which one is better to use?? Interface or abstract class??

By: Unknown

Unknown — Mon, 04 Jan 2010 10:52:49 +0000

Instead of picking points from Java books about the differences, it would be better if you describe the main advantages of using interfaces and abstract class, when to use interface and abstract classes. That would add value to your question and make easy understand to the viewer.