de></a></div>
</div>
<div class="block">Specifies whether or not the default validation mechanism of the
 <code>Unmarshaller</code> should validate during unmarshal operations.
 By default, the <code>Unmarshaller</code> does not validate.
 <p>
 This method may only be invoked before or after calling one of the
 unmarshal methods.
 <p>
 This method only controls the Jakarta XML Binding Provider's default unmarshal-time
 validation mechanism - it has no impact on clients that specify their 
 own validating SA