XBox 360 controller rumbers

Newbie & Debugging Questions
#1

I have a feeling this is a commonly asked question, how can I get Xbox 360 rumblers to work? I’ve noticed there is a method in LWJGL’s controller class called getRumbers(); (Rumbler[])

(To my understanding, can the JNI even “talk back” to the native code, or am I not understanding how this works?)

I plan on just having a simple method in my already existing class, like

//Probably works ALLOT differently than this.
joystick.vibrateLeft(10 /*The intensity*/);
joystick.vibrateRight(10 /*The intensity*/);