This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
There's not much here to go on. Are you creating a Swing application? Does the application display? What happens when you click on a component in the application window (like a text field or a button) - do they respond?
Try creating a simple application and see if it shows the same problem. If so, then you can provide that application to us so we can see what you're talking about.