This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

When to use abstract classes in Java It’s a good idea to use an abstract class when you need to implement mutable state. As an example, the Java Collections Framework includes the AbstractList ...

Difference between static and final in Java. While static variables use memory very efficiently, a static variable is not constant. It can be changed at any time. Imagine that you want a constant that ...

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 ...

We’ll also take a look at java.lang.Enum<E extends Enum<E>>, which is the base class for all typesafe enums. What you’ll learn in this Java tutorial Why use typesafe enums and not enumerated types ...