[JAVA] Jdom, parsare questo XML.

[bako]

Salve, ho questo xml:

<string>
<NewDataSet>
  <Table>
    <AirportCode>BGY</AirportCode>
    <CityOrAirportName>MILAN ORIO SERIO</CityOrAirportName>
    <Country>Italy</Country>
    <CountryAbbrviation>IT</CountryAbbrviation>
    <CountryCode>450</CountryCode>
    <GMTOffset>-1</GMTOffset>
    <RunwayLengthFeet>9186</RunwayLengthFeet>
    <RunwayElevationFeet>779</RunwayElevationFeet>
    <LatitudeDegree>45</LatitudeDegree>
    <LatitudeMinute>40</LatitudeMinute>
    <LatitudeSecond>0</LatitudeSecond>
    <LatitudeNpeerS>N</LatitudeNpeerS>
    <LongitudeDegree>9</LongitudeDegree>
    <LongitudeMinute>42</LongitudeMinute>
    <LongitudeSeconds>0</LongitudeSeconds>
    <LongitudeEperW>E</LongitudeEperW>
  </Table>
  <Table>
    <AirportCode>BGY</AirportCode>
    <CityOrAirportName>MILAN ORIO SERIO</CityOrAirportName>
    <Country>Italy</Country>
    <CountryAbbrviation>IT</CountryAbbrviation>
    <CountryCode>450</CountryCode>
    <GMTOffset>-1</GMTOffset>
    <RunwayLengthFeet>9186</RunwayLengthFeet>
    <RunwayElevationFeet>779</RunwayElevationFeet>
    <LatitudeDegree>45</LatitudeDegree>
    <LatitudeMinute>40</LatitudeMinute>
    <LatitudeSecond>0</LatitudeSecond>
    <LatitudeNpeerS>N</LatitudeNpeerS>
    <LongitudeDegree>9</LongitudeDegree>
    <LongitudeMinute>42</LongitudeMinute>
    <LongitudeSeconds>0</LongitudeSeconds>
    <LongitudeEperW>E</LongitudeEperW>
  </Table>
</NewDataSet>
</string>

devo estrarre dei valor, mettiamo LatitudeDegree.
il mio coidce è questo:

        Document document;
        SAXBuilder SBuilder = new SAXBuilder();
        org.jdom.Document document_xml = null;
        document_xml = SBuilder.build(new StringReader(s));
        Element elem = document_xml.getRootElement();
        String ret =elem.getChildTextTrim("LatitudeDegree");

da sempre null.