Java is a popular programming language that every programmer should learn. This article explains much of what you need to know.

Functional programming means using functions to the best effect for creating clean and maintainable software. This article illustrates the concepts behind the functional paradigm with practical ...

How does the single responsibility model work in a Java program? Here we show you what this SOLID principle means, and how to implement the single responsibility model in Java.

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.