Difference between abstract [class] and interface

Hi,

what is difference between abstract and interface and where we can use in Project. give me some practical example.

[edit]Changed title of thread from "Need Clarification"
CR[/edit]
[ May 15, 2008: Message edited by: Campbell Ritchie ]

Hey you can get it easily on the internet

or if you are new to java read some certification books like scjp 1.5 cathey sierra so that your oo concept will get more strong

Regards,
Vijay Jamadade

If really don't know the difference , This question is like Basic A , B , C , D...
Dear friend .. Huge of documents are available on net.

See Interface vs. Abstract Class in the JavaRanch FAQ.

Note: Please use a use a meaningful subject line instead of something like "Need Clarification".

Originally posted by shankar reddy:
If really don't know the difference , This question is like Basic A , B , C , D...
Dear friend .. Huge of documents are available on net.

Please! He's new to Java!

Originally posted by Jesper Young:
Please use a meaningful subject line

Edited.

And welcome to the Ranch,Giribabu Chintakrindi