Polymorphism and Java inheritance. ... We use polymorphism all the time in the core Java classes. One very simple example is when we instantiate the ... Advanced programming with Java generics.

What to remember about inheritance in Java; 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 ...

Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...