See e810 创建弹出菜单 for an example on how to display a popup menu.
final JPopupMenu popupMenu = new JPopupMenu();
// Create a submenu with items
JMenu submenu = new JMenu("SubMenu1");
submenu.add(action1);
submenu.add(action2);
// Add submenu to popup menu
popupMenu.add(submenu);
| Related Examples |