Which version of Java should you use in Linux? Learn how to easily switch between different versions with a tutorial from Jack Wallen.

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

This post shows readers how to create an array in Java. Including: Array Lists, multidimensional arrays, maps, and more.

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

There are three simple ways to set JAVA_HOME in Windows. This tutorial shows you how to do it manually, from the command line and through the installer.

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.

Don't let high Java CPU usage problems on Windows or Linux distract you from the underlying performance problem you're trying to troubleshoot. There are many ways to fix 100% Java CPU utilization ...

To clear the Java cache, open the Java control panel, which you can find in the Windows Control Panel or in System Preferences on a Mac.