When to use inheritance in Java In object-oriented programming, we can use inheritance when we know there is an “is a” relationship between a child and its parent class.

We will focus on the relationship between polymorphism and Java inheritance. The main thing to keep in mind is that polymorphism requires an inheritance or an interface implementation. You can see ...

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.