Simple example failing

[elect86]

So, I am trying to run a simple example

public class Test {

public static void main(String args[]) {

    OculusRift oculusRift = new OculusRift();        
    oculusRift.init();

    HMDInfo hdmInfo = oculusRift.getHMDInfo();
    System.out.println(hdmInfo);

    oculusRift.destroy();
}

}

But I get this error

Exception in thread "main" java.lang.UnsatisfiedLinkError: de.fruitfly.ovr.OculusRift.initSubsystem()Z
at de.fruitfly.ovr.OculusRift.initSubsystem(Native Method)
at de.fruitfly.ovr.OculusRift.init(OculusRift.java:82)
at ec.test.test3.Test.main(Test.java:21)
Java Result: 1

I created and included a Library based on:

JRift-0.2.5.1.jar
JRiftLibrary-0.2.5.1.jar
JRiftLibrary-0.2.5.1-natives-windows.jar

What is missing?

[elect86]

Forced by extracting JRiftLibrary64.dll and adding it to the java path

System.loadLibrary("JRiftLibrary64");

It works.. wtf?