Container.validate() not working for GridBagLayout

Question

Hi
I have a scenario where i build a panel using GridBagLayout . Later i remove certain components and wanted the components to be realigned so that empty gaps are vanished.
I tried using .validate() ,.updateUI() but its not working as expected.
Am i doing something wrong or is there any other altenate way of doing this ?
Here is my Code
public class Test
* @param args
public static void main (String[] args)
JDialog dlg = new JDialog();
dlg.setContentPane(new TestPanel());
dlg.setSize(400,400);
dlg.show();
class TestPanel extends JPanel
public TestPanel()
init();
void init()
setLayout(new GridBagLayout());
GridBagConstraints cons = new GridBagConstraints();
cons.weightx = 1;
cons.weighty = 1;
//cons.gridx = 0;
cons.gridy = 0;
cons.fill = GridBagConstraints.BOTH;
add(new JLabel("Test"), cons);
add(new JLabel("Test1"), cons);
//cons.gridx = 0;
cons.gridy = 1;
add(new JLabel("Test"), cons);
add(new JLabel("Test1"), cons);
cons.gridy = 2;
cons.weightx = 2;
JButton test = new JButton("Click to Repaint");
add(test,cons);
test.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
TestPanel.this.remove(1);
//TestPanel.this.invalidate();
TestPanel.this.validate();
TestPanel.this.updateUI();
}

Answer 1

Alternatively, write your own Layout Manager. There are many good choices out there:
http://wiki.java.net/bin/view/Javadesktop/LayoutManagerShowdown
You are going to want a layout that has the option to specify the location of components in the grid. I think in GBL, the component locations must always be specified. I wrote RCLayout, and the component location parameters are optional, so RCLayout might work for you. Otherwise checkout the other LMs. If you can't find what you want, then you can think about writing your own, but it is a large time commitment.