I am making a mini-game plugin and I am making a queue system where players wait until there are enough players to start the game. I did some research, and people are recommending to use a list of players as the queue (when it gets full, start the game) which I could have figured myself. What I don't understand is how to make a permanent list. For example, when a player joins the queue, I add them to the list, but then the program is over and the list is forgotten. How do I get a list that I can access when the next player joins the queue? Do I need a program that runs forever? Any input/suggestions are appreciated.