Resize of Frame after frame is created

Hi,
I have a tabbed pane inside a Frame. When I press one of the tabs I want to resize the Frame.
Since the tabbed pane is inside the frame I use the following code:
this.getParent().setSize(640,480); // This does not resize the frame
this.getParent().resize(640,480); // This does not resize the frame
I am using Swing.
What could be wrong or how do I resize the frame after the frame has been created?
Thanks.

Hi,
I guees I might have not told every detail.
I have a class called TabbedPane that extends JPanel.
This class then contains a JTabbedPane.
I then have a JMainFrame that extends Frame that in turn creates a TabbedPane.
Inside my TabbedPane class I listen to which Tab the user has selected, depending on which Tab I have to resize the Frame. Here is where I can't get it to work.
if(index == 1) {
Dimension d = new Dimension(640,480);
setPreferredSize(d);
updateUI(); // DOES not work.
} else {
Dimension d = new Dimension(400,400);
setPreferredSize(d);
updateUI();
Please help :)
Thanks

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I'm currently trying to write a simple piece of music notation software. This is my first time using swing beyond a relatively simple JApplet and some dialog stuff. Anywho, I ran into a pretty discouraging issue early on. So far I've got a frame with a menu bar and a toolbar on the bottom border. The toolbar contains a button which should draw a new staff panel containing 11 panels (potentially more) within it, alternating between lines and spaces. Sort of like this:
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static class NoteSpace extends JPanel{
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jbtcleff.addActionListener(new ActionListener (){
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The problem you mentioned though seems to be related to the use of a JPanel (your Staff class) that adds zero-width compontents to a grid array.

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