Whatever, you can add a code in your jar to make it execute what you want evey 3 secods. You can do in about 2 lines. Timer timer = new Timer(); timer.
ScheduleAtFixedRate(new MyTimer(), 3000, 3000); and let it running... the MyTimer class has to extend TimerTask (and implement run method). Put the stuff you want your program to do in the run method.It could also start the other jar file you want.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.