Java3D rotate the angle of camera view?

Hello!

I have build a small app in Java3D. I try to develop my own navigation, (I dont want to use the KeyNavigation). So I start to develop a class that implements the KeyListener interface. This class shall stear the camera view. It works when I move it in  forward/backwards  and to left/right.

Now I also want to rotate the view to left or right in a angle. But the anvas just turn black.

So if any one could take a look and see if you can understand where the problem is, I would be most thankfull.

Best Regards
Fredrik

My code for this is below:
Main-class
import java.applet.*;
import java.awt.*;
import java.awt.Frame;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.behaviors.keyboard.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import javax.swing.*;

import java.util.*;


public class TransformGroupTesterApplet extends Applet
{
    BranchGroup branchGroup;
    public void init()
    {
        setLayout(new BorderLayout());
        GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas3D = new Canvas3D(config);
        add("Center", canvas3D);
        SimpleUniverse simpleUniverse = new SimpleUniverse(canvas3D);

        branchGroup = new BranchGroup();
        branchGroup.addChild(addTransformGroup());

        //This code is for the view
        Transform3D transform3D = new Transform3D();
        transform3D.set(new Vector3f(0.0f, 2.0f, 0.0f));
        TransformGroup transformGroup = simpleUniverse.getViewingPlatform().getViewPlatformTransform();
        transformGroup.setTransform(transform3D);

                //Here I add my own navigation class
        canvas3D.addKeyListener( new KeyListener3D(transformGroup) );

        simpleUniverse.addBranchGraph(branchGroup);
    }


      public TransformGroupLandSurface addTransformGroup()
      {
        TransformGroupLandSurface transformGroupLandSurface = new TransformGroupLandSurface(this);
        return transformGroupLandSurface;
    }

    public static void main(String[] args)
    {
        Frame frame = new MainFrame(new TransformGroupTesterApplet(), 600, 400);
    }
}

The navigation class:
package java3d;

import java.awt.event.*;
import javax.media.j3d.*;
import javax.vecmath.*;

public class KeyListener3D implements KeyListener
{
    TransformGroup transformGroup;
    float x = 0.0f;
    float y = 2.0f;
    float z = 0.0f;
    private double angle = 0.0;

    public KeyListener3D(TransformGroup tfg)
    {
        transformGroup = tfg;
    }

    public void keyTyped(KeyEvent e)
    {
    }

    public void keyPressed(KeyEvent e)
    {
        if( e.getKeyCode() == KeyEvent.VK_UP )
        {
            Transform3D transform3D = new Transform3D();
            z = z - 0.1f;
            transform3D.set(new Vector3f(x, y, z));
            transformGroup.setTransform(transform3D);
        }
        else if( e.getKeyCode() == KeyEvent.VK_DOWN )
        {
            Transform3D transform3D = new Transform3D();
            z = z + 0.1f;
            transform3D.set(new Vector3f(x, y, z));
            transformGroup.setTransform(transform3D);
        }
        else if( e.getKeyCode() == KeyEvent.VK_LEFT )
        {
            Transform3D transform3D = new Transform3D();
            x = x - 0.1f;
            transform3D.set(new Vector3f(x, y, z));
            transformGroup.setTransform(transform3D);
        }
        else if( e.getKeyCode() == KeyEvent.VK_RIGHT )
        {
            Transform3D transform3D = new Transform3D();
            x = x + 0.1f;
            transform3D.set(new Vector3f(x, y, z));
            transformGroup.setTransform(transform3D);
        }
        else if( e.getKeyCode() == KeyEvent.VK_SPACE )
        {
                        //THIS IS THE CODE FOR THE ROTATION THAT WANT WORK FOR ME!!
            Transform3D transform3D = new Transform3D();
            //transformGroup.getTransform( transform3D );
            transform3D.set(new Vector3f(x, y, z));
            angle = angle - 0.01;
            transform3D.rotX(angle);
            transformGroup.setTransform(transform3D);
        }
    }

    public void keyReleased(KeyEvent e)
    {
    }
}