Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

Hi! I'm making a game for Android using Java and the Libgdx engine. However, I want the code to be independent of the engine, and so am wrapping any references to Libgdx in its own class. For ...

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

Goodbye to superfluous imports The java.lang package imports automatically into your standalone Java programs, but even the most basic programs typically require java.util or java.io. As a result, ...

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.

Java 23 extends import and patterns, but dispenses with string templates In addition to enhanced preview features such as the Class-File API, the JDK brings innovations in pattern matching and ...