private static void showAllRoles() throws Exception {
        RoleDAO dao = new RoleDAO();
        ArrayList users = (ArrayList) dao.findAll();
        Role o;
        
        System.out.println("Listing roles...");
        
        for (int i = 0; i < users.size(); i++) {
            o = (Role) users.get(i);
            System.out.println("ID: " + o.getId() + " - " + "Role: " + o.getName());
        }
        
        Role admin = (Role) dao.getNewInstance();
        
    }