Adding menu problem

[reg_rpc]

Hi,
I got a problem with adding the menu in menu bar,below is the code please help any one

StringBuilder menuTopItems = new StringBuilder();
StringBuilder menuItems = new StringBuilder();
for (int i = 0; i < menuList.size(); i++) {
menuItems.append(menuList.get(i) + ",");

}
if (!menuList.isEmpty()) {

applicationMenu.addMenu("Items",110,
menuItems.toString(),
new ApplicationMenuClickHandler());

}