JInternalFrame won't appear?

It sounds like you're executing a time consuming process inside the Event Dispatching Thread (EDT), this will prevent the event queue from process (amongst other things) repaint requests.

The problem is that you are blocking your EDT this can be taken care of by simply creating a new Thread/Runnable thar calls gu.readMatches(); the method.

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.