Java Utililty Methods JPopupMenu

List of utility methods to do JPopupMenu

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Description

The list of methods to do JPopupMenu are organized into topic(s).

Method

voidattachPopupMenu(final JComponent component, final JPopupMenu popupMenu)
Attach popup menu on the given component. 
component.addMouseListener(new MouseAdapter() {
    @Override
    public void mouseReleased(MouseEvent e) {
        if (e.isPopupTrigger() && e.getComponent() instanceof JTable) {
            popupMenu.show(e.getComponent(), e.getX(), e.getY());
});
...
voidcleanPopupLayoutMetrics(JPopupMenu popupMenu)
Cleans the layout metrics of the specified popup menu. 
if (popupMenu != null) {
    popupMenu.putClientProperty(LAYOUT_METRICS, null);
PointcomputePopupLocation(MouseEvent event, Component rel, JPopupMenu popup)
Swing 1.0 and 1.1 have a horrible bug with respect to popup menus. 
Dimension psz = popup.getSize();
Dimension ssz = Toolkit.getDefaultToolkit().getScreenSize();
Point gLoc = rel.getLocationOnScreen();
Point result = new Point(event.getX(), event.getY());
gLoc.x += event.getX();
gLoc.y += event.getY();
if (psz.width == 0 || psz.height == 0) {
    int items = popup.getSubElements().length;
...
JPopupMenucreatePopupMenu()

Create a JPopupMenu instance. 

JPopupMenu popupMenu = new JPopupMenu();
popupMenu.add(new JLabel("Help"));
popupMenu.addSeparator();
popupMenu.add(new JLabel("About"));
return popupMenu;
voidcreatePopupMenu(String menuText, JPopupMenu menu, ActionListener listener)
create Popup Menu 
menu.add(createMenuItem(menuText, listener));
voidensurePopupIsOnScreen(JPopupMenu popup)
ensure Popup Is On Screen 
java.awt.Point location = popup.getLocation(null);
java.awt.Dimension size = popup.getSize(null);
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
screenSize.height -= 28; 
javax.swing.SwingUtilities.convertPointToScreen(location, popup);
if (location.x < 0) {
    location.x = 0;
} else if (location.x + size.width > screenSize.width) {
...
ComponentfindMenuComponent(JPopupMenu menu, String menuComponentName)
find Menu Component 
for (int i = 0; i < menu.getComponentCount(); i++) {
    Component component = menu.getComponent(i);
    if (menuComponentName.equals(component.getName()))
        return component;
return null;
JMenufindSubMenu(JPopupMenu popupMenu, String name)
find Sub Menu 
int n = popupMenu.getComponentCount();
for (int i = 0; i < n; i++) {
    Component c = popupMenu.getComponent(i);
    if (c instanceof JMenu) {
        JMenu subMenu = (JMenu) c;
        if (name.equals(subMenu.getName())) {
            return subMenu;
        subMenu = findSubMenu(subMenu.getPopupMenu(), name);
        if (subMenu != null) {
            return subMenu;
return null;
MouseAdaptergetMousePopupAdapter(final Component component, final JPopupMenu popup)
Creates a mouse popup adapter for the given component and popup menu. 
return new MouseAdapter() {
    @Override
    public void mousePressed(MouseEvent e) {
        handlePopup(e);
    @Override
    public void mouseReleased(MouseEvent e) {
        handlePopup(e);
...
JPopupMenugetOnlyPopupMenu(Container owner)
get Only Popup Menu 
return (JPopupMenu) getOnlyComponent(owner, JPopupMenu.class);