This post explains how to install Java or check which version is running on your machine. Install on any OS, and learn about the JDK.

If you want to download and install Java JDK 18 on Windows 11/10 computer, you will also have to set up a Path in Environment Variable.

How to check the Java version on your Mac using System Preferences 1. Click on the Apple logo in the top-left of your menu bar. 2. Scroll down and click on "System Preferences." 3.