I am trying to fetch the below xml from db using a java method but I am getting an error

Code used to parse the xml

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();

InputSource is = new InputSource(new ByteArrayInputStream(cond.getBytes()));

Document doc = db.parse(is);

Element elem = doc.getDocumentElement();

// here we expect a series of <data><name>N</name><value>V</value></data>
NodeList nodes = elem.getElementsByTagName("data");

TableID jobId = new TableID(_processInstanceId);
Job myJob = Job.queryByID(_clientContext, jobId, true);

if (nodes.getLength() == 0) {
    log(Level.DEBUG, "No data found on condition XML");

}

for (int i = 0; i < nodes.getLength(); i++) {
    // loop through the <data> in the XML

    Element dataTags = (Element) nodes.item(i);
    String name = getChildTagValue(dataTags, "name");
    String value = getChildTagValue(dataTags, "value");

    log(Level.INFO, "UserData/Value=" + name + "/" + value);

    myJob.setBulkUserData(name, value);
}

myJob.save();

The Data

<ContactDetails>307896043</ContactDetails>
<ContactName>307896043</ContactName>
<Preferred_Completion_Date>
</Preferred_Completion_Date>
<service_address>A-End Address: 1ST HELIERST HELIERJT2 3XP832THE CABLES 1 POONHA LANEST HELIER JE JT2 3XP</service_address>
<ServiceOrderId>315473043</ServiceOrderId>
<ServiceOrderTypeId>50</ServiceOrderTypeId>
<CustDesiredDate>2013-03-20T18:12:04</CustDesiredDate>
<OrderId>307896043</OrderId>
<CreateWho>csmuser</CreateWho>
<AccountInternalId>20100333</AccountInternalId>
<ServiceInternalId>20766093</ServiceInternalId>
<ServiceInternalIdResets>0</ServiceInternalIdResets>
<Primary_Offer_Name  action='del'>MyMobile Blue &
java xml xml-parsing
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