Using this trick, you can launch or open two or multiple apps from the Windows Start Menu. We also show you how to open multiple instances of an app.

The following command enables you to run any Java JAR file on the command line: java -jar jarfilename.jar To use the JAR file opener that comes when you install Java with the JDK, just issue the ...

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.

Red Hat's long-term support for OpenJDK on Windows ensures Java developers who write for the Windows platform will receive the same assurance for app support as their peers who build apps on the Red ...