InfoWorld

When to use abstract classes vs. interfaces in Java

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. Abstract classes and ...
InfoWorld

Abstract class versus interface in the JDK 8 era

In The new Java 8 Date and Time API: An interview with Stephen Colebourne, Stephen Colebourne tells Hartmut Schlosser, “I think the most important language change isn’t lambdas, but static and default ...
TheServerSide

How Java instance main methods and unnamed classes work

Instance main methods and unnamed classes, coming in Java 21, will forever change how developers learn Java and bootstrap applications. Why? They provide a simple, clean and concise syntax to launch ...
Android Authority

Java beginner course - A free and comprehensive guide to the basics of Java

Java is one of the most highly sought after programming languages, not to mention one of the two official languages for Android development. In this Java beginner course, we’ll go over the basics to ...