Jface help

[Tom Tangelder]

I just started using jface for a class, and could use a quick hand figuring something out.

I'm trying to implement for example an app that displays a login screen, and then for example goes to a administrative or user page.

I've figured out how to build my login screen, but I want to be able to change the contents of that applicationwindow without creating a new window.

Any Help would be appreciated thanks.