To check which version of Java you have on your Windows computer, you'll need to open the Command Prompt app. If you don't have the latest version of Java installed, Windows may have trouble ...

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.

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.