Changing the constraints in a Container object - layout

Question

In Java 8, the Container class has an void add(Component comp, Object constraints) method that adds the component with a constraints information. I want to build a GUI with three panels, where pressing a button would result in switching the constraint information of the components that do not include the button object. How is it possible to switch the constraint information?
EDIT:
I tried the following:
private Map<SpecUITitlePanel, GridBagConstraints> constraints = new Hashtable<SpecUITitlePanel, GridBagConstraints>();
[…]
switchPanelsButton.setText( "Switch panels");
switchPanelsButton.addActionListener( new java.awt.event.ActionListener() {
public void actionPerformed( final java.awt.event.ActionEvent event) {
switchPanelsActionPerformed( event);
}
[…]
private void switchPanelsActionPerformed( final java.awt.event.ActionEvent event) {
boolean swapped = false;
final GridBagLayout layout = (GridBagLayout) getLayout();
final Iterator<SpecUITitlePanel> keysIter = constraints.keySet().iterator();
// summaryPanel, testPanel
while (keysIter.hasNext() && layout != null) {
final SpecUITitlePanel key = keysIter.next();
final String title = key.getTitle();
final Iterator<SpecUITitlePanel> keysIter2 = constraints.keySet().iterator();
while (keysIter2.hasNext()) {
final SpecUITitlePanel key2 = keysIter2.next();
final String title2 = key2.getTitle();
if (!title.equals( title2)) {
if (!title.contains( BUTTON_PANEL_TITLE) && !title2.contains( BUTTON_PANEL_TITLE)) {
// swap components
String message = "component = " + title + ", "
+ constraints.get( key) + "; component2 = " + title2
+ ", " + constraints.get( key2);
System.out.println( message);
final GridBagConstraints value = constraints.get( key);
final GridBagConstraints value2 = constraints.get( key2);
constraints.put(key, value2);
layout.setConstraints( key, value2);
constraints.put(key2, value);
layout.setConstraints( key2, value);
swapped = true;
message = "component = " + title + ", "
+ constraints.get( key) + "; component2 = " + title2
+ ", " + constraints.get( key2);
System.out.println( message);
}
}
}
}
if (swapped) {
repaint();
}
}
The relevant part of the output is
component = Test, java.awt.GridBagConstraints#5179288b; component2 = tna.rads.main_panel.violation_summary_panel, java.awt.GridBagConstraints#f1a7ed2
component = Test, java.awt.GridBagConstraints#f1a7ed2; component2 = tna.rads.main_panel.violation_summary_panel, java.awt.GridBagConstraints#5179288b