@Override
    public void simpleInitApp() {
        bulletAppState = new BulletAppState();
        stateManager.attach(bulletAppState);
        bulletAppState.setDebugEnabled(true);
        setupKeys();
        setupFloor();
        buildPlayer();
    }
Tests attaching/detaching nodes via joints
@author normenhansen
jme3-examples/src/main/java/jme3test/bullet/TestAttachDriver.java