Parse rdf with DOMparser

Question

Since rdf is an xml language I thought it was possible to retreive elements from an rdf file via DOM. It does not seem to work though.
Does anybody know this for a fact?
This is part of my Javacode:
DOMParser parser;
XMLDocument rdf;
parser = new DOMParser();
parser.setPreserveWhitespace(true);
try
URL rdfURL = new URL("http://knuff.it.volvo.se/~xml/xmlxjobb/Avdelningtest.xml");
parser.parse(rdfURL);
rdf = parser.getDocument();
NodeList myNodeList = rdf.getElementsByTagName("vitinf:departmentNumber");
int i = myNodeList.getLength();
for (int a = 1; a <= i; a++)
Node myNode = myNodeList.item(a-1);
System.out.println("");
System.out.println("Lets show the nodename");
System.out.println(myNode.getNodeName());
System.out.println("Lets show the departmentnumber");
System.out.println(myNode.getFirstChild().getNodeValue());
When doing the same thing but replacing the URL with one to a "normal" xml-file without namespaces and removing the vitinf-namespace tag in front of departmentNumber,it works perfectly well.
Thanks
//Camilla

Answer 1

sorry i should have been more specific. yeah i know all about xml parsers and my idea was just to read in the text file using java and if the string location is read in for example then just to output the rdf tag location in the rdf file. ive done this before but complications arose when validating it etc, just thought there might be a library like Jena to do it properly for me.