This post lists the best resources to learn Java, including paid online courses, free websites, video sharing platforms and more.

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.

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.

As of March 9, Udemy has dropped a wide range of free online coding courses on Python, Java, HTML, SQL, and more.