Canvas3D not visable on Jpanel created with NetBeans UI Builder

Question

Hi,
I created an application with NetBeans UI Builder. It has a frame and two panels. On one panel
I attached a few things with the UI builder and they get displayed correctly. On the other panel however,
I tried to attach a Canvas3D object that I created in another class (the object contains an universe
with 3D objects) with not success by using the following code:
DCL3DFrame mainWindow = new DCL3DFrame(); // object created with UI builder
                DCL3d scope3d = new DCL3d(); // object created manually in another class
                Canvas3D canvasForScope3D = scope3d.getCanvas();
                mainWindow.getPanelForCanvas().add(canvasForScope3D, java.awt.BorderLayout.CENTER);
                mainWindow.setVisible(true);I'm not a java programmer, so I'm probably missing something perhaps stupid.
Any help is appreciated.
Thanks,
Salvo

Answer 1

Thank you, now it works. It does not work because when I modified preferred size in netbeans the jpanel size was not changed. The jPanel size has changed when I reloaded(reopened) the file. I thought that preffered size property is not suitable but it is. I was wrong.
Here is my working code.
Regards,
Primoz
InvoiceCriteriaPanel icp = new InvoiceCriteriaPanel();
jPanelCriteria.add(icp);
jPanelCriteria.setPreferredSize(
      new Dimension(icp.getPreferredSize().width,
                             icp.getPreferredSize().height));
icp.setSize(icp.getPreferredSize().width,
                 icp.getPreferredSize().height);
icp.setVisible(true);