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I try to modify AuthenticatedUser to store a list of AdminRole I am doing Authenticated user is the class used by all my applications; It enters a session when the user logs successfully. Now I want to add a list of authorization roles in the user session. Although each application defines a AdminRole class differently, for example, my data center application store in the database:

  employee_id role_name site_name receive_email   
 All of my applications will not need the receive_email field or expand their own methods I thought it was called for an abstract class. But Eclipse is complaining about the wrong type on the authorized_fel_list setter in this snippet.  
  DataCenterAdminRoleDAO dcAdminDao = New DataCenterAdminRoleDAO (); {List & lt; DataCenterAdminRole & gt; Authorized_roles = dcAdminDao.getAuthorizedRoleListByBadge (authenticatedUser.getBadge ()); AuthenticatedUser.setAuthorized_role_list (authorized_roles); === class public class authenticatedConfigure employee implementation Serializable {Private Static last long serial VERSIONUID = 1 L; Private list & amp; Amp; AdminRole & gt; Authorized_role_list; ...} Public Abstract Class AdminRole Serializable Applicable {Private Static Final Long Serial VERSIONUID = 1 L; Private string role_name; // regular, admin, editor, etc. Private string site_id; // Company's branches ...} public class DataCenterAdminRole to implement AdminRole SerialJobs {  
 Obviously a  AdminRole  list for fixing my dataconter inequality But I thought I could pass the subclasses by increasing the intangible class. What am I missing?   
 
 
 If this is a setter that is causing you problems then you can use less bundles  Authorized_roles_list   
  private list & lt;? A wildcard on AdminRole and gt; Authorized_role_list; .... Public Set authorized_fal_list (list & lt;; AdminRole & gt; authorized_rollles expanded) {...}