I am missing one more step or messed up something. How do I create a link to run the java string to start mafia and add it to my launcher? I used the Wiki to set up a link which opens the mafia folder. I can open a terminal, navigate to the mafia folder and use the java string to run the jar. I would like to run mafia from my launcher. I am such a Linux noob! Thanks.
Edit:I think I go it figured out. The file permissions were not set as executable. As for pinning, just right click while it is running on the icon in the launcher aand select pin.