Of course you can also extends Canvas3D with a zero
argument construtor Bean like class:

public class MyCanvas3DBean extends Canvas3D
{
 // since the super class Canvas3D needs a config
 // argument
 static java.awt.GraphicsConfiguration config=
 SimpleUniverse.getPreferredConfiguration();

 public MyCanvas3DBean()
{
 super(config);
}

public MyCanvas3DBean(boolean offScreen)
{
 super(config, offScreen);
}

...
}

Alessandro



 --- Alessandro Borges <[EMAIL PROTECTED]>
escreveu: > Try to instatiate your Canvas3D object
this way:
>
> java.awt.GraphicsConfiguration config=
> SimpleUniverse.getPreferredConfiguration();
> Canvas3D canvas3D = new Canvas3D(config);
>
>  There is no exist a Canvas3D constructor with no
> arguments.
>
> Alessandro
>  --- 张 <[EMAIL PROTECTED]> escreveu: > Hello!
> >       I am using Jbuilder9.0. I want to add a
> > javax.media.j3d.Canvas3D JBean into one JPanel
> named
> > "contentPane", but it do not success.And It always
> > reports:  'Class or public constructor for the
> class
> > not found: new Canvas3D()'.
> >     Can you tell me WHY??
> >
> >
> >                         THANKS
> >
> >
>
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