Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException

[niagarasoft20-bsdportdev at yahoo.com]

When building on Mac OS 10.6 using solylatte described on the building page 
http://wikis.sun.com/display/OpenJDK/Darwin10Build, it compiles fine and javac 
is working, but when trying to run java and start.HelloWorldSwing Demo am 
getting the error:

Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException
    at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:202)
    at java.awt.Window.<init>(Window.java:532)
    at java.awt.Frame.<init>(Frame.java:420)
    at javax.swing.JFrame.<init>(JFrame.java:224)
    at start.HelloWorldSwing.createAndShowGUI(HelloWorldSwing.java:60)
    at start.HelloWorldSwing.access$000(HelloWorldSwing.java:52)
    at start.HelloWorldSwing$1.run(HelloWorldSwing.java:77)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:660)
    at 
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)

    at 
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
    at 
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)


Looks like it's having trouble connecting to the X11 environment. Any 
suggestions?

Mike