DE>ParserConfigurationException</CODE></A>
 exception when the <A HREF="../../../javax/xml/parsers/DocumentBuilderFactory.html#newDocumentBuilder()"><CODE>newDocumentBuilder()</CODE></A> is invoked.</p>

  
 <h4>Note for implementors</h4>
 <p>
 A parser must be able to work with any <A HREF="../../../javax/xml/validation/Schema.html"><CODE>Schema</CODE></A>
 implementation. However, parsers and schemas are allowed
 to use implementation-specific custom mechanisms
 as long as they yield the result described 