In this Java 101 tutorial, I’ve explained how interfaces differ from classes, and showed you how to declare, implement, and extend interfaces in your Java programs.

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.

In this article Rafael Winterhalter, creator of the bytecode manipulation tool Byte Buddy, provides detailed guidance on how to easily create Java agents using Byte Buddy.

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

Learn how Remote Method Invocation (RMI), an application programming interface for Java, preserves the object model and its advantages across a network.

This quick example will demonstrate how to implement a remote Jenkins build trigger. With the remote Jenkins build URL, a developer can call jobs from scripts, the CURL command and even Java code.

We discuss how to work with directories, sub-directories, and traverse them using Java and the DirectoryStream method. Learn more.