Validating XML: I'm missing something...

[Robert Houben]

I’m having trouble validating my XML with an external XSD when I add a namespace.  I’ve looked at all the related posts on the archives and cannot see what I’m doing wrong.  Probably too many trees in my forest! ;)   I get this error: cvc-elt.1: Cannot find the declaration of element 'outer'.   Here is the XSD: <s:schema xmlns:s="http://www.w3.org/2001/XMLSchema"             targetNamespace="http://rhtest"             elementFormDefault="qualified" >       <s:element name="outer">             <s:complexType>              <s:sequence>               <s:element name="middle">                <s:complexType>                 <s:sequence>                  <s:element name="inner" />                 </s:sequence>                </s:complexType>               </s:element>              </s:sequence>             </s:complexType>    </s:element> </s:schema>   Here is the instance (note the commented variation didn’t work, either):             <!--             <x:outer xmlns:x="http://rhtest">                         <x:middle>                                     <x:inner/>                         </x:middle>             </x:outer>             -->             <outer xmlns="http://rhtest">                         <middle>                                     <inner/>                         </middle>             </outer>   And here is my code:               public void loadXML(String xmlString, String externalSchemaLocation, String namespace) throws FWTransactionException             {                         DOMParser parser = new DOMParser();                         try                         {                                     parser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaLanguage",                                                 "http://www.w3.org/2001/XMLSchema");                                     parser.setFeature(                                                 "http://apache.org/xml/features/validation/schema", true);                                     parser.setFeature(                                                 "http://apache.org/xml/features/validation/schema-full-checking", true);                                     parser.setFeature("http://xml.org/sax/features/namespaces",true);                                     parser.setFeature("http://xml.org/sax/features/validation",true);                                     parser.setErrorHandler(this);                                     if (null == namespace || namespace.length() == 0)                                     {                                                 parser.setProperty(                                                             "http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",                                                             externalSchemaLocation.replace('\\', '/'));                                     }                                     else                                     {                                                 parser.setProperty(                                                             "http://apache.org/xml/properties/schema/external-schemaLocation",                                                             externalSchemaLocation.replace('\\', '/'));                                     }                                     parser.parse(new InputSource(new ByteArrayInputStream(xmlString.getBytes())));                         }                         catch (SAXNotRecognizedException snre)                         {                                     //                         }                         catch (SAXNotSupportedException snre)                         {                                     //                         }                         catch (SAXException se)                         {                                     //                         }                         catch (IOException ioe)                         {                                     //                         }             }   TIA,