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.

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

Java currently supports only primitive types and object references. Project Valhalla extends this by introducing inline classes which are new types that exhibit some behaviors of both types of value.

The Java serialization tutorial In this Java serialization example, we will use both the ObjectOutputStream and the ObjectInputStream to save and retrieve the state of a simple JavaBean. The POJO will ...

Functional supplier interface in Java tutorial There are only half a dozen classes you really need to master to become competent in the world of functional programming. The java.util.function package ...

Since Java 21, wrapper classes have played an increasingly sophisticated role in Java’s type system. Here’s everything you need to know about updates for virtual threads, pattern matching, and ...