rListener</code> on both objects
will always be valid and non-<code>null</code>, whether set by the application or a default
implementation provided by the processor.
The default implementation provided by the processor will report all warnings and errors to <code>System.err</code>
and does not throw any <code>Exception</code>s.
Applications are <em>strongly</em> encouraged to register and use
<code>ErrorListener</code>s that insure proper behavior for warnings and
errors.
</p>


<h3>Resolution of URIs with