When we are use interface and abstract class in Android

Question

Accepted Answer

Interfaces and abstract classes are used in Android to achieve abstraction, modularity, and code reusability.

Interfaces are used to define a contract that classes must implement, allowing for polymorphism and loose coupling.
Abstract classes provide a base implementation for subclasses, allowing for code reuse and providing common functionality.
Interfaces are commonly used for event handling, callbacks, and defining contracts for communication between components.
Abstract classes are often used to create reusable base classes for activities, fragments, or custom views.
Both interfaces and abstract classes help in achieving separation of concerns and promoting good software design principles.

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