Abstract classes and Interfaces

Hello

Can you please answer my questions:

1.What is the difference between Abstact classes and Interfaces.in program how we are going to decide which one to create?and when to use interfaces and when to use absract classes?(In programmatically)

2.can we declare variables in interface?

thanks & regards
Rashmi

Hello Rashmi,

please use the forum's search function. This question has been posted several times in the last weeks. Please read these posts first. If you still have questions afterwards, come back and post them.

Best Regards,
Thomas

Have a look at this FAQ; if there is anything you don't understand come back.

But a search of this forum will find several very similar old threads.