Dr Java IDE help

Ok, so i want to move into java 3D but i guess the Dr Java IDE doesn't want me to. I built the first program supplied in a tutorial and it compiled with no errors. However, when i run this compiled code in the eclipse IDE, it works... wtf?!?. When i went to run the program in the Dr Java IDE, nothing happens and i get this error in the console listed below. Anyways, i want to do this in Dr Java because eclipse confuses me as I've had no experience with it. Thanks.
Unhandled exception: java.lang.NoClassDefFoundError: com/sun/jdi/VMOutOfMemoryException
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com/sun/jdi/VMOutOfMemoryException
     at edu.rice.cs.drjava.ui.DrJavaErrorHandler$1.run(DrJavaErrorHandler.java:109)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
This is the code btw:
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import javax.media.j3d.*;
class HelloWorld3D {
public static void main(String args[]) {
SimpleUniverse su = new SimpleUniverse();
BranchGroup groups = new BranchGroup();
groups.addChild(new ColorCube(0.5));
su.getViewingPlatform().setNominalViewingTransform();
su.addBranchGraph(groups);
}

1. Enterprise, about the same dl as personal, so why not.
2. Win2k Pro will do nicely(dont bother with Server, unless u need server for other purposes as well)
3. JDeveloper is good, however as a newbie i think u should start out in notepad or alike.

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