Use Java assertions to test your assumptions about program correctness and check them in your code.

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.

There is a reason why Java method modifiers exist. If you call public methods internally and don't understand why, your developers could face major class issues.

A preview feature in JDK 22 combines the strengths of virtual threads and parallel streams to improve optimization and performance. Here's how it works.

We discuss how to work with directories, sub-directories, and traverse them using Java and the DirectoryStream method. Learn more.