jsf error in latest eap build

below java.util.Date shows red and can't reslove it.

<managed-bean>
<managed-bean-name>date1</managed-bean-name>
<managed-bean-class>java.util.Date</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>

<managed-bean>
<managed-bean-name>date2</managed-bean-name>
<managed-bean-class>java.util.Date</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>

<managed-bean>
<managed-bean-name>date3</managed-bean-name>
<managed-bean-class>java.util.Date</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>