Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

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.

This post explains how to call a method in Java. Learn how to define methods, call them from other classes, and pass arguments!

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.

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

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Quite often a Java Stream or other component needs an object passed to it in order to perform some type of calculation or process, but when the process is complete, nothing gets returned from the ...