how do i make an executable java archive run automatically when i login?

how do i make an executable java archive run automatically when i login?

How do I make a executable java archive run automatically in Ubuntu 12.04
lts? i tried going to the start menu and then clicking on start up
applications, but when I restarted my computer to see if it worked, I
found that it didn't start the program automatically. if it helps, I want
to run minecraft automatically on start up. Please help -dkino14