I’ve written some Java to drive the Pololu Maestro Servo Controllers and posted it on GitHub.
So far it supports the following functions, implemented using the Pololu Native USB protocol: set position, get position, set speed and set acceleration.
If you want to build the code then you should look at https://github.com/IAmContent/public/tree/master/public-java.
If you just want to inspect the Maestro-specific code then look at https://github.com/IAmContent/public/tree/master/public-java/devices/iamcontent-pololu-servo-controllers.
I hope that it’s useful,