How to display IndexedFaceSet from .wrl file to Java 3D using cv97 package.

Dear everyone,
I'm trying to load a VRML file containing some IndexedFaceNode to Java3D using cv97 package written by Shatoshi Konno (http://www.cybergarage.org/vrml/cv97/cv97java/index.html).
I use the code as below.
However, there is nothing displaying in the window when I run this code.
Does anyone have experience on this. Could you give me some suggestion?
Thanks a lot!
======================================================
import cv97.Constants;
import cv97.SceneGraph;
import cv97.j3d.SceneGraphJ3dObject;
import cv97.node.Node;
import cv97.node.PointLightNode;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Canvas3D;
public class ViewerJ3D extends Frame implements Constants {
   private SceneGraph   mSceneGraph;
   private SceneGraphJ3dObject mSceneGraphObject;
   public ViewerJ3D(){
      super("VRML Simple Viewer");
      mSceneGraph = new SceneGraph(SceneGraph.NORMAL_GENERATION);
      mSceneGraph.load("model\\model.wrl");
      setLayout(new BorderLayout());
      Canvas3D c = new Canvas3D(null);
      add("Center", c);
      mSceneGraphObject = new SceneGraphJ3dObject(c, mSceneGraph);
      mSceneGraph.setObject(mSceneGraphObject);
      setSize(400,400);
      show();
      addWindowListener(new killAdapter());
      setVisible(true);
   static class killAdapter extends WindowAdapter {
       public void windowClosing(WindowEvent event) {
          System.exit(0);
  public static void main(String args[])
      ViewerJ3D view = new ViewerJ3D();
}=======================================================

Dear everyone,
I'm trying to load a VRML file containing some IndexedFaceNode to Java3D using cv97 package written by Shatoshi Konno (http://www.cybergarage.org/vrml/cv97/cv97java/index.html).
I use the code as below.
However, there is nothing displaying in the window when I run this code.
Does anyone have experience on this. Could you give me some suggestion?
Thanks a lot!
======================================================
import cv97.Constants;
import cv97.SceneGraph;
import cv97.j3d.SceneGraphJ3dObject;
import cv97.node.Node;
import cv97.node.PointLightNode;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Canvas3D;
public class ViewerJ3D extends Frame implements Constants {
   private SceneGraph   mSceneGraph;
   private SceneGraphJ3dObject mSceneGraphObject;
   public ViewerJ3D(){
      super("VRML Simple Viewer");
      mSceneGraph = new SceneGraph(SceneGraph.NORMAL_GENERATION);
      mSceneGraph.load("model\\model.wrl");
      setLayout(new BorderLayout());
      Canvas3D c = new Canvas3D(null);
      add("Center", c);
      mSceneGraphObject = new SceneGraphJ3dObject(c, mSceneGraph);
      mSceneGraph.setObject(mSceneGraphObject);
      setSize(400,400);
      show();
      addWindowListener(new killAdapter());
      setVisible(true);
   static class killAdapter extends WindowAdapter {
       public void windowClosing(WindowEvent event) {
          System.exit(0);
  public static void main(String args[])
      ViewerJ3D view = new ViewerJ3D();
}=======================================================

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