Static code analysis tools like Checkstyle and SonarQube. If you've ever wanted to experiment with a new IDE, it's worth dedicating a bit of time to download and install Visual Studio Code for Java.

Learn how to use Java annotations to associate metadata with classes, methods, and other application elements in your Java programs.

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