Need help parsing XML file for Twitter Oauth

I've written a twitter desktop app that basically just lets me post tweets and pics... nothing fancy.

I've got everything working but this last part of persisting a config file (which is the following XML generated by my application.

<?xml version="1.0" encoding="UTF-8" standalone="no"?><Twitterer><config id="1"><accessToken>ENDLESS-STRING-OF-CHARACTERS</accessToken><accessTokenSecret>ANOTHER-ENDLESS-STRING-OF-CHARACTERS</accessTokenSecret></config></Twitterer>

What I need to do is just set the accessToken & accessTokenSecret variables. The filename is config.xml.

I've been looking at a lot of examples on the net, but can't seem to wrap my head around only getting two values from the file, which shouldn't need a loop.

This is as far as I've gotten on this last piece of my puzzle:

try {
        File fXmlFile = new File(this.getFileName());
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(fXmlFile);
        doc.getDocumentElement().normalize();

        NodeList nList = doc.getElementsByTagName("config");
        int numberOfConfigs = nList.getLength();

        // GET THE TWO VARIABLES HERE

    } catch (Exception e) {

    }

If anyone can help me just read those two tags into their corresponding variables I would be quite appreciative. I can handle the rest of the Authorization after that.