Creating a Popup Menu

 
 final JPopupMenu menu = new JPopupMenu();
  
 // Create and add a menu item.
 JMenuItem item = new JMenuItem("Item Label");
 item.addActionListener(actionListener);
 menu.add(item);
     
 // Set the component to show the popup menu.
 component.addMouseListener(new MouseAdapter() {
     public void mousePressed(MouseEvent evt) {
         if (evt.isPopupTrigger()) {
             menu.show(evt.getComponent(), evt.getX(),
               evt.getY());
         }
     }
     public void mouseReleased(MouseEvent evt) {
         if (evt.isPopupTrigger()) {
             menu.show(evt.getComponent(), evt.getX(),
               evt.getY());
         }
     }
 });