How to properly use Authenticators from Java SDK?

Hello everyone,

i would like to use a simple Authenticator from the Java SDK. From this documentation it is not realy clear for me how to use in exactly to achieve what i want.

I would like to have the user name and password set to establish a session with my foundation server.

After the session is established i would like to use the functionalities from the ConnectedThingClient class (mainly client.invokeService()) if possible.

Any Thoughts on this are very much appreciated.

Best Regards,

Dominik