In which cases is it advisable to use inheritance in object-oriented programming?

Inheritance is advisable when you need to create a new class that is a specialized version of an existing class and inherits its properties and behavior. This allows for code reuse and extending functionality without duplication. For example, in Android, you can create a base class Activity with common methods, and then inherit from it for specific screens with unique logic.

However, inheritance should be used when there is a clear "is-a" relationship between classes; otherwise, composition is preferable.