What is the difference between abstract classes and interfaces in programming?

What is the difference between abstract classes and interfaces in programming?

Abstract classes can have both abstract methods and concrete methods, while interfaces can only have abstract methods.

Can you give me an example of when to use an abstract class?

Use an abstract class when you want to provide a common base with shared code for related classes.

And when should I use an interface instead?

Use an interface when you want to define a contract that multiple classes can implement, regardless of their hierarchy.

Are there any limitations to using interfaces?

Yes, interfaces cannot have any implementation code, and a class can implement multiple interfaces but only inherit one abstract class.