Now, open the Command Prompt and run it as administrator. We will make use of the ‘cd’ command to change the operating directory on the Command Prompt to the one where your Java program is stored.

Navigate to jdk.java.net and download your platform’s zip file. Extract the Java 21 zip file to a sensible location on your filesystem. Configure the JAVA_HOME environment variable. Add the JDK’s \bin ...

To check which version of Java you're running, you'll need to use Windows 10's Command Prompt app. The Command Prompt can seem intimidating at first, but if you know what to type, you'll be fine ...