The first half of this tutorial introduced the basics of inheritance in Java. You learned how to use Java’s extends and super keywords to derive a child class from a parent class, invoke parent ...

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 ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.