Because of this line:

private static JPanel dummy = new JPanel();

in org.jboss.tools.common.model.util.IconUtil the AWT EventThread is started up which result in 2 unecessary things:

1) The AWT-thread is running for monitoring various (non-used i supposed) events

2) if your resolution changes NullPointerExceptions occur like this:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at sun.awt.Win32GraphicsEnvironment.displayChanged(Win32GraphicsEnvironment.java:109)
at sun.awt.windows.WToolkit$4.run(WToolkit.java:698)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Why is a Dummy panel even needed just for creating images ?!