Interface and Abstract Class

Interfaces and abstract classes are two key features of object-oriented programming in Java and C# that allow for abstraction and polymorphism.

Interfaces define a set of methods that a class must implement, while abstract classes are classes that cannot be instantiated directly and may contain abstract methods, concrete methods, and instance variables.

The question is now: when should we use an interface and when an abstract class?

2. Use abstract classes when you want to provide a common implementation or behavior for a set of related classes, but the classes may also have their own unique behavior or state. For example, the Animal class may be abstract and contain common behavior for all animals, such as eating and sleeping, but each subclass of Animal, such as Cat or Dog, may have its own unique behavior, such as meowing or barking.

In summary, interfaces and abstract classes are useful when you want to define a common set of behavior or state for a group of related classes, but the classes may also have their own unique behavior or state. Interfaces are useful when you want to define a set of methods that multiple classes should implement, while abstract classes are useful when you want to provide a common implementation or behavior for a set of related classes.

hope you find this helpful. stay tuned for more blogs like this….

have a nice day….

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