Teaching myself

I have found a website that i am going to start learning java 3D from

currently I have this to create a scene graph and empty space

import javax.media.j3d.*;

import javax.swing.JFrame;

import java.awt.*;

publicclass Testextends JFrame

{

Test()

{

setSize(400, 300);

Canvas3D canvas =new Canvas3D(null);

add(canvas);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

View myView = constructView(canvas);

Locale myLocale = constructViewBranch(myView);

constructContentBranch(myLocale);

}

private View constructView(Canvas3D myCanvas3D)

{

View myView =new View();

myView.addCanvas3D(myCanvas3D);

myView.setPhysicalBody(new PhysicalBody());

myView.setPhysicalEnvironment(new PhysicalEnvironment());

return myView;

}

private Locale constructViewBranch(View myView)

{

VirtualUniverse myUniverse =new VirtualUniverse();

Locale myLocale =new Locale(myUniverse);

BranchGroup myBranchGroup =new BranchGroup();

TransformGroup myTransformGroup =new TransformGroup();

ViewPlatform myViewPlatform =new ViewPlatform();

myTransformGroup.addChild(myViewPlatform);

myBranchGroup.addChild(myTransformGroup);

myLocale.addBranchGraph(myBranchGroup);

myView.attachViewPlatform(myViewPlatform);

return myLocale;

}

privatevoid constructContentBranch(Locale myLocale)

{

}

publicstaticvoid main(String args[])

{

new Test();

}

}

it compiles but i get the folling error when running

Exception in thread"main" java.lang.NullPointerException: Canvas3D:null Graphi

csConfiguration

at javax.media.j3d.Canvas3D.checkForValidGraphicsConfig(Canvas3D.java:95

4)

at javax.media.j3d.Canvas3D.<init>(Canvas3D.java:997)

at Test.<init>(Test.java:13)

at Test.main(Test.java:57)

any ideas as to why?

[3302 byte] By [Drogo_Nevetsa] at [2007-11-27 0:50:31]