public static void main(String... args) {
EventQueue.invokeLater(
new Runnable() {
@Override
public void run() {
createAndShowGUI();
}
});
}
@Override
public void popupMenuWillBecomeVisible(final PopupMenuEvent e) {
EventQueue.invokeLater(
new Runnable() {
@Override
public void run() {
JComboBox combo = (JComboBox) e.getSource();
Accessible a = combo.getAccessibleContext().getAccessibleChild(0);
// Or Accessible a = combo.getUI().getAccessibleChild(combo, 0);
if (a instanceof BasicComboPopup) {
BasicComboPopup pop = (BasicComboPopup) a;
Point p = new Point(combo.getSize().width, 0);
SwingUtilities.convertPointToScreen(p, combo);
pop.setLocation(p);
}
}
});
}