The CalendarUser object

Our calendar application uses a domain object named CalendarUser, which contains information about our users, as follows:

    //src/main/java/com/packtpub/springsecurity/domain/CalendarUser.java

    public class CalendarUser implements Serializable {
       private Integer id;
       private String firstName;
       private String lastName;
       private String email;
       private String password;
       ... accessor methods omitted ..
    }