JXInput tutorial or example?

Question

I want to use an Xbox 360 controller as an input to my Java program. After searching for a while, I came across the JXInput library. I tried their test program, and it worked. But I'm having trouble finding an example or a tutorial for how to make my own program using JXInput. When I try to call JXInputManager.getNumberOfDevices() as soon as my program starts, it returns 0, even though the Xbox 360 controller was connected, and the test program that I downloaded was working. Do I need to do anything else before I can get the controller to show up as a JXInputDevice? Is there a minimal working example of a program that uses the JXInput library, so that I can get started from there, or otherwise a tutorial of how to use JXInput?