       this type of validation.  Of the Jakarta XML Binding Providers that do support
             this type of validation, some may require you to decide at schema
             compile time whether or not a client application will be allowed
             to request fail-fast validation at runtime.
        </dd>
    </dl>
 </blockquote>

 <p>
 The <code>Validator</code> class is responsible for managing On-Demand Validation.
 The <code>Unmarshaller</code> class is responsible for managing Unmarshal-Time
 Va