Username         Administrator
user1            Yes
user2            No
user3            No
user4            Yes

<display:table name="${userTable}" class="users" uid ="row">
<display:column style="width: 8%" title="Username" property="username" maxLength="30" sortable="true" />
<display:column style="width: 4%" title="Administrator" property="usertype" sortable="true" />
</display:table>

<display:table name="${userTable}" class="users" uid ="row">
<display:column style="width: 8%" title="Username" property="username" maxLength="30" sortable="true" />
<s:if test="#session.USER_SESSSION_HANDLE.usertype.contains("Yes")">
<display:column style="width: 4%" title="Administrator" property="usertype" sortable="true" />
</s:if>
</display:table>

<display:table name="${userTable}" class="users" uid ="row">
<display:column style="width: 8%" title="Username" property="username" maxLength="30" sortable="true" />
<display:column style="width: 4%" title="Administrator" property="usertype" sortable="true" />

<display:column style="width: 5%" title="Link for Administrator" sortable="true">
<s:if test="#session.USER_SESSSION_HANDLE.usertype.contains("Yes")">
<s:url var="editURL" namespace="/AdminLink" action="adminLink_edit">
<s:param name="recordId" value="%{#attr.row.recordId}" />
</s:url>
<s:a href="%{editURL}">It is a link</s:a>
</s:if>
<s:else>
<s:label>It is not a link</s:label>
</s:else>
</display:column>

</display:table>

Username         Administrator
user1            **Yes**
user2            No
user3            No
user4            **Yes**