Can anyone tell me how to click the sphere and display a messege???

Question

/* Goal: Want to create a bunch of spheres, and when a sphere is clicked:
* 1) display a message in the textfield
* 2) transform the position of the sphere to (0,0,0)
* (if (0,0.0) is occupied by another sphere, move that sphere somewhere.
* Achieved : create the spheres,can transform,rotate and zoome the spheres.
* Problem: having trouble to click it and display text and change location (problem with picking)
* Thanks!!!!!!
public class node extends Applet{
public static void main(String[] args){
new MainFrame(new node(),1000,800);
Sphere sphere;
PickCanvas pc;
TextField text;
public void init(){
setLayout(new BorderLayout());
GraphicsConfiguration gc=
SimpleUniverse.getPreferredConfiguration();
Canvas3D cv=new Canvas3D(gc);
add(cv,BorderLayout.CENTER);
//add mouseListener
//add mouseListener for click
cv.addMouseListener(new MouseAdapter(){
public void mouseClicked
(java.awt.event.MouseEvent mouseEvent){
pick(mouseEvent);
//create textfield down below
text=new TextField();
add(text,BorderLayout.SOUTH);
BranchGroup bg=createSceneGraph(cv);
bg.compile();
SimpleUniverse su= new SimpleUniverse(cv);
su.getViewingPlatform().setNominalViewingTransform();
su.addBranchGraph(bg);
private BranchGroup createSceneGraph(Canvas3D cv){
     BranchGroup root= new BranchGroup();
TransformGroup spin= new TransformGroup();
spin.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
spin.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
root.addChild(spin);
//appearance
Appearance ap=new Appearance();
          ap.setMaterial(new Material());
          //create ten spheres
          for(int i=0;i<10;i++){
               double x=0.1*i;
               double y=-0.05*i;
               //<transform sphere>
               Transform3D tr=new Transform3D();
               tr.setTranslation(new Vector3d(x,y,0));
               tr.setScale(0.03);
               //<transform sphere>
               //<objects>
               sphere=new Sphere();
               sphere.setAppearance(ap);
               TransformGroup Tg= new TransformGroup(tr);
               Tg.addChild(sphere);
               spin.addChild(Tg);
               //<objects>
          //rotation
MouseRotate rotator=new MouseRotate(spin);
BoundingSphere bounds= new BoundingSphere();
rotator.setSchedulingBounds(bounds);
spin.addChild(rotator);
//translation
MouseTranslate translator=new MouseTranslate(spin);
translator.setSchedulingBounds(bounds);
spin.addChild(translator);
//zoom
MouseZoom zoom=new MouseZoom(spin);
zoom.setSchedulingBounds(bounds);
spin.addChild(zoom);
          // <picking>
          BranchGroup bg=new BranchGroup();
spin.addChild(bg);
pc=new PickCanvas(cv,bg);
pc.setTolerance(5);
pc.setMode(PickTool.GEOMETRY_INTERSECT_INFO);
//</picking>
// <background and light>
          BoundingSphere bound=new BoundingSphere();
          Background background=new Background(1.0f,1.0f,1.0f);
          background.setApplicationBounds(bound);
          root.addChild(background);
          AmbientLight light=new AmbientLight(true, new Color3f(Color.cyan));
          light.setInfluencingBounds(bound);
          root.addChild(light);
          PointLight ptlight=new PointLight(new Color3f(Color.green),
                    new Point3f(3f,3f,3f),new Point3f(1f,0f,0f));
          ptlight.setInfluencingBounds(bound);
          root.addChild(ptlight);
          PointLight ptlight2=new PointLight(new Color3f(Color.yellow),
                    new Point3f(3f,3f,3f),new Point3f(1f,0f,0f));
          ptlight2.setInfluencingBounds(bound);
          root.addChild(ptlight2);
     // </background and light>
return root;
//mouse event
public void pick(MouseEvent mouseEvent){
pc.setShapeLocation(mouseEvent);
PickResult[] results= pc.pickAll();
//when a sphere is clicked, display Node #
for(int i=0;(results !=null) && (i<results.length);i++){
PickIntersection inter= results.getIntersection(0);
int[] ind=inter.getPrimitiveCoordinateIndices();
text.setText("Node"+ind[0]);
//When a sphere is clicked, i want to change its position
//how to relocate the clicked sphere to position (0,0,0)?
//(if there is a sphere already in(0,0,0),change that sphere to
//somewhere else)
(I import this )
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.Material;
import javax.media.j3d.PointAttributes;
import javax.media.j3d.PointLight;
import javax.media.j3d.Shape3D;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.picking.*;
import java.awt.*;
import java.awt.event.*;
import javax.media.j3d.*;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import java.applet.*;
import com.sun.j3d.utils.applet.MainFrame;
import javax.vecmath.*;

Answer 1

never mind. I got it to work.