Pathway issues

Question

Hi,
I have started working on java3d. I installed the stuff, and everything is set. When I try to run the following code:
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class HelloUniverse extends Applet {
private SimpleUniverse u = null;
public BranchGroup createSceneGraph() {
     // Create the root of the branch graph
     BranchGroup objRoot = new BranchGroup();
     // Create the TransformGroup node and initialize it to the
     // identity. Enable the TRANSFORM_WRITE capability so that
     // our behavior code can modify it at run time. Add it to
     // the root of the subgraph.
     TransformGroup objTrans = new TransformGroup();
     objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
     objRoot.addChild(objTrans);
     // Create a simple Shape3D node; add it to the scene graph.
     objTrans.addChild(new ColorCube(0.4));
     // Create a new Behavior object that will perform the
     // desired operation on the specified transform and add
     // it into the scene graph.
     Transform3D yAxis = new Transform3D();
     Alpha rotationAlpha = new Alpha(-1, 4000);
     RotationInterpolator rotator =
     new RotationInterpolator(rotationAlpha, objTrans, yAxis,
                    0.0f, (float) Math.PI*2.0f);
     BoundingSphere bounds =
     new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
     rotator.setSchedulingBounds(bounds);
     objRoot.addChild(rotator);
// Have Java 3D perform optimizations on this scene graph.
objRoot.compile();
     return objRoot;
public HelloUniverse() {
public void init() {
     setLayout(new BorderLayout());
GraphicsConfiguration config =
SimpleUniverse.getPreferredConfiguration();
     Canvas3D c = new Canvas3D(config);
     add("Center", c);
     // Create a simple scene and attach it to the virtual universe
     BranchGroup scene = createSceneGraph();
     u = new SimpleUniverse(c);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
     u.addBranchGraph(scene);
public void destroy() {
     u.cleanup();
// The following allows HelloUniverse to be run as an application
// as well as an applet
public static void main(String[] args) {
     new MainFrame(new HelloUniverse(), 256, 256);
I get a complier error that package com.sun.j3d.utils.universe.* does not exist.
Would anybody know what I am suppose to do next?
Thank you,
Brian

Answer 1

Either you do not have the packages on your computer, or they are not in the correct location, or your J3D install was not correct.
Verify that they exist, are in the correct location, and recheck that you followed the install instructions exactly. If then you still have a problem, it is an error in the install instructions (probably).