Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

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

static – Java’s main method is static, which means no instances need to be created beforehand to invoke it. void – Some programming languages return a zero or 1 to indicate the main method has run ...

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