This post explains how to use variables in Java. Learn the primitive types (and what that means) and just why variables are so important for any coding!

Learn three ways to document your code, then get started using identifiers, types, literals, and variables in Java 12 ...

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

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.

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.