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

Java supports class reuse through inheritance and composition.This two-part tutorial teaches you how to use inheritance in your Java programs. What you’ll learn in this Java tutorial ...

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 ...

The sealed Java class helps reign in the overzealous and often detrimental abuse of Java inheritance. Sealed classes allow a developer to explicitly declare the names of the components that can ...