Making use of a schema in SAX/DOM? (w/jdk 1.5 xml libraries)

Question

I have a simple function that I wrote to validate some xml...
    public void validate(String xmlURI) throws SAXException, IOException  {
     XMLReader parser = XMLReaderFactory.createXMLReader();
     parser.setFeature("http://xml.org/sax/features/validation", true);
     parser.parse(xmlURI);
    }I have the following simple schema...
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xs:element name="blah" type="xs:string"/>
     <xs:element name="junk">
          <xs:complexType>
               <xs:sequence>
                    <xs:element ref="blah"/>
               </xs:sequence>
          </xs:complexType>
     </xs:element>
</xs:schema>I have a unit test that runs some non-conforming XML though the process, and I have two questions about that.
XML...
<?xml version="1.0" encoding="UTF-8"?>
<junk xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="TestSchema.xsd">
     <blah2>blah</blah2>
</junk>
Question #1: It can't find the stylesheet (which is located in the same directory). How do I do that correctly?
Output to stderr...
[Error] ValidatorTestBad.xml:2:6: Document is invalid: no grammar found.
[Error] ValidatorTestBad.xml:2:6: Document root element "junk", must match DOCTY
PE root "null".
Question #2:
Printing the messages to stderr isn't very useful behavior. How do I get the parser to throw an exception?
Thanks.

Answer 1

            reader.setFeature("http://xml.org/sax/features/validation", true);
            reader.setFeature("http://apache.org/xml/features/validation/schema", true);
      reader.setProperty("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",  XSDSchemaString);