Sample JAVA code to retrieve Realm, Group names and User names in FileNet (FileNet Content Engine API)

//Sample JAVA code to retrieve Realm, Group names and User names in FileNet

import java.io.IOException;
import java.util.Iterator;
import javax.security.auth.Subject;
import com.filenet.api.collection.GroupSet;
import com.filenet.api.collection.UserSet;
import com.filenet.api.constants.PrincipalSearchAttribute;
import com.filenet.api.constants.PrincipalSearchSortType;
import com.filenet.api.constants.PrincipalSearchType;
import com.filenet.api.core.Connection;
import com.filenet.api.core.Factory;
import com.filenet.api.util.UserContext;
public class CEUtil {
    private static Connection conn = null;

    public static Connection getCEConn()
    {
        try {
            String ceURI =    "http://localhost:9080/wsi/FNCEWS40MTOM/";
            String userName ="user";
            String password ="pwd";
            if(conn==null){
            conn = Factory.Connection.getConnection(ceURI);
            Subject subject = UserContext.createSubject(conn, userName, password, null);
            UserContext uc = UserContext.get();
            uc.pushSubject(subject);
            }

        } catch (Exception e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        System.out.println("CE Connection"+conn);
        return conn;
    }
    public static void getRealm(String osName) throws IOException{
       
        try{
            Connection conn = getCEConn();
            com.filenet.api.core.EntireNetwork entireNetwork= Factory.EntireNetwork.fetchInstance(conn, null);
            com.filenet.api.security.Realm realm= entireNetwork.get_MyRealm();String realmName= realm.get_Name();
            System.out.println(realmName+ " is retrieved");
           
            //retrieve user names
            String pattern ="username";
            UserSet users = realm.findUsers(pattern, PrincipalSearchType.PREFIX_MATCH,PrincipalSearchAttribute.SHORT_NAME,PrincipalSearchSortType.NONE,Integer.valueOf("50"), null);
            com.filenet.api.security.User user;
            Iterator it = users.iterator();
            while (it.hasNext())
            {
            user = (com.filenet.api.security.User)it.next();
            System.out.println("distinguishedname =" +user.get_DistinguishedName());
            System.out.println("shortname =" + user.get_ShortName());
            System.out.println("name=" + user.get_Name());
            System.out.println("displayname =" + user.get_DisplayName());
            }
           
            //retrieve group names
            String pattern1="groupName";
            GroupSet groups = realm.findGroups(pattern1,PrincipalSearchType.PREFIX_MATCH,PrincipalSearchAttribute.SHORT_NAME,PrincipalSearchSortType.NONE,Integer.valueOf("50"), null);
            com.filenet.api.security.Group group;
            Iterator groupIt= groups.iterator();
            while (groupIt.hasNext())
            {
            group=(com.filenet.api.security.Group)groupIt.next();
            System.out.println("name=" + group.get_Name());
            System.out.println("Distinguishedname = " + group.get_DistinguishedName());
            System.out.println("shortname =" + group.get_ShortName());
            //System.out.println("Users =" + group.get_Users());
            }
           
            System.out.println("Done");


        }
        catch(Exception e){
            e.printStackTrace();
        }
    }
    public static void main(String[] args) throws IOException {
        getRealm("OSNAME");
    }
}