Build Motunautr with Java 8 or 9, and then either run it with Java 8 (easy way, but doesn't support high DPI displays well), or run with Java 9 using the provided shortcut (which might have to be modified to point to your Java 9 directory).
Njol/Motunautr
Mǫtunautr is an alternative to the default Windows desktop and start menu. It displays groups of icons in simple windows. These windows are on top of the desktop by default (working like the default desktop), but when clicked on or otherwise switched to can also be on top of other applications (like the start menu).
JavaGPL-3.0