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

Do you have a single class in your Java design that does too much and knows too much? If so, you've fallen into the God object antipattern. Here's a look at how to refactor your God object and ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

A Java string is a sequence of characters that exists as an object of the class java.lang. Java strings are created and manipulated through the string class. Once created, a string is immutable -- its ...

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