After quite a big effort I have managed to use my Minia in Java.
Unfortunately there is no native support for HID devices in the JVM so one has to map some native library of the OS using JNI or JNA or map some third party library like the HIDApi that is esactly what I did.
This library claims to be compatible with Windows, Linux and MacOSX.
I have compiled it for Windows, and after some useless attempts I have managed to import in java using JNA.
After this I created a little abstraction for the device and a little GUI for testing it.
As usual the code is available in my repository here.