Compare inheritance and composition, the two fundamental ways to relate Java classes, then practice debugging ClassCastExceptions in Java inheritance.

In this article, you will learn the basics of Java polymorphism and how to use it in your programs. Things to know about Java polymorphism Polymorphism and Java inheritance Why polymorphism is ...

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.