JOptionPane.showMessageDialog( this, "Failed to retrieve UserManagementService", "Error", JOptionPane.ERROR_MESSAGE);
showErrorMessage("Failed to retrieve UserManagementService", e);
	private void newUserAction(ActionEvent ev) {		try {			Collection collection = client.getCollection();			UserManagementService service =				(UserManagementService) collection.getService("UserManagementService", "1.0");			UserDialog dialog = new UserDialog(service, "Edit Users");			dialog.show();		} catch (XMLDBException e) {			JOptionPane.showMessageDialog(				this,				"Failed to retrieve UserManagementService",				"Error",				JOptionPane.ERROR_MESSAGE);			e.printStackTrace();		}	}