J3d and swing - dukes dollars!

Question

am trying to get my j3d scene to display in a swing JFrame
JPanel pane1 = new JPanel();
pane1.add(universe.canvas3D);
frame3D = new JFrame("Hiya");
frame3D.getContentPane().add(pane1, BorderLayout.CENTER);
frame3D.setBounds(400, 400, 400, 400);
frame3D.setVisible(true);
this doesn't wrok, get a nullpointer exception... anyone help?

Answer 1

Hum.. seems to me that you might have forgotten to create the Canvas3D Object, thus resulting in a null pointer exception. Can't tell it without having all the code.. anyway here's an example of how I do it.
Also be careful because there are issues in mixing lightweight (swing) and heavyweight (Java3D) components. See the faq at www.j3d.org, there are also examples.
JPanel contentPane = new JPanel();
contentPane.setLayout(new BorderLayout());
// my class extends JFrame, thus the following replaces the default content pane
setContentPane(contentPane);
// This is a method of my class that add swing components
initUI(contentPane);
GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
// Here we go, create the Canvas3D
Canvas3D canvas3D = new Canvas3D(config);
// Here you embed Java3D into the Swing
contentPane.add("Center", canvas3D);
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
JPanel pane1 = new JPanel();
pane1.add(universe.canvas3D);
frame3D = new JFrame("Hiya");
frame3D.getContentPane().add(pane1,
BorderLayout.CENTER);
frame3D.setBounds(400, 400, 400, 400);
frame3D.setVisible(true);
this doesn't wrok, get a nullpointer exception...
anyone help?