Okay, so I want to run a GUI application as daemon on a server without X. The application is a java program. It can be configured in a configuration file so the GUI is not necessary to use it. Unfortunately it doesn't have a shell executable.
I knew that one once, but forgot the solution. Basically there is a program which fakes an X-server to other programs. Finding that would be the ideal solution. Just can't remember what it was called.