- Abstract classes can contain abstract methods without body as well as concrete methods with body
- Interfaces can’t contain concrete methods with body
- Abstract classes are extended by their sub classes and any abstract method needs to be overrriden by their sub classes
- Interfaces are implemented by their sub types and all the methods or properties defined in the interface must be implemented by their sub types
- a class CANNOT extend two or more abstract classes
- a class CAN implement two or more interfaces
What are the differences between Abstract class and Interface?
- Abstract classes can contain abstract methods without body as well as concrete methods with body
- Interfaces can't contain concrete methods with body
- Abstract classes are extended by their sub classes and any abstract method needs to be overrriden by their sub classes
- Interfaces are implemented by their sub types and all the methods or properties defined in the interface must be implemented by their sub types
- a class CANNOT extend two or more abstract classes
- a class CAN implement two or more interfaces
