@Override
  public void onAction(String name, boolean keyPressed, float tpf) {
    if (name.equals("displayPosition") && keyPressed) {
      teaGeom.move(10, 10, 10);

    }
  }
A 3rd-person chase camera orbits a target (teapot). 
Follow the teapot with WASD keys, rotate by dragging the mouse.
jme3-examples/src/main/java/jme3test/input/TestChaseCamera.java