What wrong with my program? Help me!

Question

I try to load my model but all is black. Here my code:
import java.applet.Applet;
import java.awt.*;
import java.io.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import com.mnstarfire.loaders3d.Loader3DS;
import com.sun.j3d.loaders.Scene;
public class HelloJava3Da extends Applet
     public HelloJava3Da()
          setLayout(new BorderLayout());
          GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
          Canvas3D canvas3d = new Canvas3D(config);
          add("Center", canvas3d);
          BranchGroup scene = createSceneGraph();
          scene.compile();
          SimpleUniverse simpleU = new SimpleUniverse(canvas3d);
          simpleU.getViewingPlatform().setNominalViewingTransform();
          simpleU.addBranchGraph(scene);
     public BranchGroup createSceneGraph()
          BranchGroup objRoot = new BranchGroup();
          Loader3DS loader = new Loader3DS();
          Scene s = null;
          try{
               s = loader.load("first-project.3DS");
          catch(FileNotFoundException e)
               System.out.print("file not found");
               System.exit(1);
          objRoot.addChild(s.getSceneGroup());
          return objRoot;
     public static void main(String[] args)
          Frame frame = new MainFrame(new HelloJava3Da(), 256, 256);
It compile but all things are black

Answer 1

How do you even know you are looking at your loaded model? Make sure you do that.
Btw. black screen is a good thing, that means the scene is live. I guess you have to change your viewing direction to spot what you put into the scene.