[JAVA3D] Java3D duplicating threads

[Zak Nixon]

Whenever I create a canvas and attach an appropriate view to my scene, i get a set of these Java3D threads.       J3D-BehaviorScheduler J3D-BehaviorStructureUpdateThread J3D-GeometryStructureUpdateThread J3D-InputDeviceScheduler J3D-MasterControl J3D-RenderStructureUpdateThread J3D-Renderer J3D-RenderingAttributesStructureUpdateThread J3D-RenderingEnvironmentStructureUpdateThread J3D-SoundSchedulerUpdateThread J3D-SoundStructureUpdateThread J3D-TimerThread J3D-TransformStructureUpdateThread   Now, once I close the component that contains the canvas, I set my canvas,view,viewer,viewingplatform, (everything) to null. But if I create another canvas, I get another set of these threads.   Is there anyway to clean up/stop these threads ?   Thanks   Zak