Hi,
After some investigation it appears that basic authentication (as used in the HCP destination) is no longer working for the Java app. Sounds like something changed on HCP since the videos were created. For the time being, the best workaround is to paste the URL's for the Java app directly into your web browser:
https://live3p00000000trial.hanatrial.ondemand.com/live3/?track=yourtrackvalue
https://live3p00000000trial.hanatrial.ondemand.com/live3/?stop=y
Thanks,
Philip