te during 
         unmarshal operations, false otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="JAXBException.html" title="class in jakarta.xml.bind">JAXBException</a></code> - if an error occurs while retrieving the validating
         flag</dd>
<dd><code>java.lang.UnsupportedOperationException</code> - could be thrown if this method is
         invoked on an Unmarshaller created from a JAXBContext referencing
         Jakarta XML Binding mapped classes</dd>
</dl>
</li>
