It depends upon the solution you are proposing. If it's database centric then your client (
JSP), web(Managed Bean), business(UserManagement), integration (JPA) and EIS (Database) all will have components to be shown in class (userDetails, SLB, JPA entity), component (JSP, bean,
ejb), deployment (DB box) and sequence diagrams (complete flow from login.jsp to db table)
If it's LDAP centric then obviously flow and all entities will be different.