Java code for parsing a complex xml file [on hold]

I need help with writing a java code for parsing this xml file below. The structure confuses me. I am new to java coding .. I have read a number of codes for parsing xml files but the structure looks different from mine

<?xml version="1.0" encoding="utf-8"?>
<trafficDetectorData xmlns:xsi="http://ift.tt/ra1lAU"     xmlns="http://ift.tt/1uW8LJ4" xmlns:lrms="http://ift.tt/1sL7esK"     xsi:schemaLocation="http://ift.tt/1uW8LJ4 C:\temp\test\Detectors.xsd">
  <owner-id>IADOT-SIMS</owner-id>
  <network-id>IADOT-SIMS</network-id>
  <collection-periods>
    <collection-period>
      <detection-time-stamp>
        <local-date>20140928</local-date>
        <local-time>221000</local-time>
        <utc-offset>-0500</utc-offset>
      </detection-time-stamp>
      <start-time>221000</start-time>
      <end-time>221020</end-time>
      <detector-reports>
        <detector-report>
          <detector-id>I-74 NB from Ave of the Cities t</detector-id>
          <status>operational</status>
          <lanes>
            <lane>
              <lane-id>1</lane-id>
              <count>1</count>
              <volume>1</volume>
              <occupancy>0</occupancy>
              <speed>122</speed>
              <classes>
                <class>
                  <class-id>Small</class-id>
                  <count>1</count>
                  <volume>1</volume>
                </class>
                <class>
                  <class-id>Medium</class-id>
                </class>
                <class>
                  <class-id>Large</class-id>
                </class>
              </classes>
            </lane>
          </lanes>
        </detector-report>
      </detector-reports>
    </collection-period>
  </collection-periods>
</trafficDetectorData>

Below is the code I wrote for parsing the file above. My question is how do I add the values under lanes and classes?

import org.w3c.dom.*;

import javax.xml.parsers.*;

import java.io.*;

public class FinalTrial {
     public static void main(String argv[]) {

            try {

            File fXmlFile = new File("workFile_09282014 22-10-34c.xml");
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
            Document doc = dBuilder.parse(fXmlFile);


            doc.getDocumentElement().normalize();

            System.out.println("Root element :" +     doc.getDocumentElement().getNodeName());

            NodeList nList = doc.getElementsByTagName("detector-report");

            System.out.println("----------------------------");

            for (int temp = 0; temp < nList.getLength(); temp++) {

                Node nNode = nList.item(temp);

                System.out.println("\nCurrent Element :" + nNode.getNodeName());

                if (nNode.getNodeType() == Node.ELEMENT_NODE) {

                    Element eElement = (Element) nNode;



                    System.out.println("Detector ID : " + eElement.getElementsByTagName("detector-id").item(0).getTextContent());
                    System.out.println("Status : " + eElement.getElementsByTagName("status").item(0).getTextContent());

                }
            }
            } catch (Exception e) {
            e.printStackTrace();
            }
          }

    }