Terminal issues with Java compile/commands

Basically every time I start my computer or don't use terminal for a short period of time it takes around two minutes to run a java compile/run command, as far as I can tell all other non java terminal commands are fine. After the first two minute wait my terminal returns to normal, and compiling/running programs takes a few seconds at most. This is extremely annoying as you can imagine! I would really appreciate it if someone could help me out, and thanks for lookin!