To start jQuizShow from a command shell, first change your shell's current directory to the directory containing the jQuizShow.jar file. Then enter:
java -jar jQuizShow.jar
The jQuizShow can be started by double-clicking on the jQuizShow.jar file icon itself.
NOTE:: The jQuizShow.jar icon may be labelled as jQuizShow in Windows Explorer, depending on the Folder Settings for that folder.
A Windows shortcut to this file can also be made and placed on the Windows desktop or within the Windows Start menu for easy access.