How to run a JAR file in Windows 11/10 Since Java or JAR files can’t run on Windows on their own, you need to install the Java Framework or what is popularly called Java.

A JAR file is an archive file but is more than a file compression format. Here's how to open, run, or execute JAR files.

When you double-click on a file in Windows, it will automatically open a default program that is configured to manage these types of files. It is common, though, want or need to use a different ...