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.

If you have the Java Runtime Environment installed, and the JAR file is executable, it should open with a double-click. Sometimes, you might see a pop-up to choose which app to run the file.

How do I open a Java JAR file? Follow these steps to open a JAR file and extract the contents to the local filesystem: Change the extension of the JAR file from .jar to .zip Right-click on the JAR ...