One more easy concept we can introduce in this Java tutorial is how to use methods. This will give you a bit more idea regarding the way that Java code is structured and what can be done with it.

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

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 ...

A public method should never be called by another public method within the same class hierarchy. It should only be called by other classes via the classes' public interface. Class calls might not be ...

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

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.

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