int prefsIndex = systemMenu.indexOf(getItem(systemMenu, SWT.ID_PREFERENCES));
MenuItem newAppMenuItem = new MenuItem(systemMenu, SWT.CASCADE, prefsIndex + 1);
newAppMenuItem.setText("SWT-added item");
newAppMenuItem.setAccelerator(SWT.MOD1 | 'i');
newAppMenuItem.addArmListener(armListener);
newAppMenuItem.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
System.out.println("SWT-added item selected");
};