[JAVA3D] My first Sphere!

[Γιάννης]

I read a turotial and i am trying to figure out the Java3d   Here is my attempt to create a simple Sphere   ----------------- import com.sun.j3d.utils.universe.*; import com.sun.j3d.utils.geometry.Sphere; import javax.media.j3d.BranchGroup; import com.sun.j3d.utils.applet.MainFrame; import javax.media.j3d.*; import java.awt.*;   public class MyFirstSphere extends java.applet.Applet {   public MyFirstSphere()   {      SimpleUniverse universe = new SimpleUniverse();       GraphicsConfiguration config = universe.getPreferredConfiguration();     Canvas3D c = new Canvas3D(config);      add("Center", c);      BranchGroup group = new BranchGroup();      group.addChild(new Sphere(4));       universe.getViewingPlatform().setNominalViewingTransform();      universe.addBranchGraph(group);   }   public static void main( String[] args ) {      new MyFirstSphere();   } ----------------------------   The problem is that everything is being compiled coorectly but nothing is being displayed when i run it