How to write clean code in Java doesn't follow one specific set of guidelines. Programmers should adopt one Java style guide, minimize class size, provide logical names and reuse existing code to make ...

Get the code Download the source code for all examples in this article. Unit testing with JUnit 5 Let’s start with an example of how to configure a project to use JUnit 5 for a unit test.

Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

This post explains how to call a method in Java. Learn how to define methods, call them from other classes, and pass arguments!

The way Java is getting modernized makes it one of the most popular languages to code in and a continual top choice for creating business applications for enterprises.

This post explains how to install Java or check which version is running on your machine. Install on any OS, and learn about the JDK.

In fact, you don’t even have to code your Java into a file. JShell can execute lines of Java code directly on the command line. Java without a main method Historically, Java devs have had to code a ...

With Java running critical applications the world over, the nearly 25-year-old programming language must balance its community’s affection for its syntax with new trends.

Learning Java can help aspiring developers understand the foundations of programming because of the language’s wide usage and functionality.