Scenario:

How to make a panellist that reads data from a database and according to the number of records in the database creates new row in the panellist?

Solution:

<af:iterator id="i3" value="#{emp.collectionModel}" var="row"> //emp.collectionModel is your collection
          <af:panelList id="pl1">
            <af:outputText value="#{row.empName}" id="ot3"/> // empName is the attribute to show
          </af:panelList>
        </af:iterator>