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.

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.

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

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

How to write a Java palindrome program for Strings Good programmers need to create code that efficiently solves problems, using various methods. A popular academic exercise is to create a program that ...

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.