Need help on parsing xml file...

Question

Hi all,
I need to collect some data from an Xml file using java. I have the following code with me but I am unable to get the required result. I am unable to get the data from the tags belonging to the header and footer elements. Please find the code and the sample xml file below.
Program to parse XML:
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class JobLogDetails3{
     //No generics
     List myJobs;
     Document dom;
     public JobLogDetails3(){
          //create a list to hold the job objects
          myJobs = new ArrayList();
     public void runJobDetails() {
          //parse the xml file and get the dom object
          parseXmlFile();
          //get each joblog element and create a job object
          parseDocument();
          //Iterate through the list and print the data
          printData();
     private void parseXmlFile(){
          //get the factory
          DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
          try {
               //Using factory get an instance of document builder
               DocumentBuilder db = dbf.newDocumentBuilder();
               //parse using builder to get DOM representation of the XML file
               dom = db.parse("test.xml");
          }catch(ParserConfigurationException pce) {
               pce.printStackTrace();
          }catch(SAXException se) {
               se.printStackTrace();
          }catch(IOException ioe) {
               ioe.printStackTrace();
     private void parseDocument(){
          //get the root elememt
          Element docEle = dom.getDocumentElement();
          //get a nodelist of <joblog> elements
          NodeList nl = dom.getElementsByTagName("*");
          if(nl != null && nl.getLength() > 0) {
               for(int i = 0 ; i < nl.getLength();i++) {
                    //get the joblog element
                    Element el = (Element)nl.item(i);
                    //get the joblog object
                    Job J = getJob(el);
                    //add it to list
                    myJobs.add(J);
     * I take an joblog element and read the values in, create
     * an joblog object and return it
     * @param JobEl
     * @return
     private Job getJob(Element JobEl) {
          //for each <joblog> element get text or int values of
          //name ,id, age and name
          String jobServer = getTextValue(JobEl,"server");
          String jobName = getTextValue(JobEl,"name");
          String jobClient = getTextValue(JobEl,"machine_name");
          String jobStart = getTextValue(JobEl,"start_time");
          String jobType = getTextValue(JobEl,"type");
          String jobEnd = getTextValue(JobEl,"end_time");
          String jobSize = getTextValue(JobEl,"new_processed_bytes");
          //Create a new Job with the value read from the xml nodes
          Job J = new Job(jobServer,jobName,jobClient,jobStart,jobType,jobEnd,jobSize);
          return J;
     * I take a xml element and the tag name, look for the tag and get
     * the text content
     * i.e for <employee><name>John</name></employee> xml snippet if
     * the Element points to employee node and tagName is name I will return John
     * @param ele
     * @param tagName
     * @return
     private String getTextValue(Element ele, String tagName) {
          String textVal = null;
          NodeList nl = ele.getElementsByTagName(tagName);
          if(nl != null && nl.getLength() > 0) {
               Element el = (Element)nl.item(0);
               textVal = el.getFirstChild().getNodeValue();
          return textVal;
     * Calls getTextValue and returns a int value
     * @param ele
     * @param tagName
     * @return
     private int getIntValue(Element ele, String tagName) {
          //in production application you would catch the exception
          return Integer.parseInt(getTextValue(ele,tagName));
     * Iterate through the list and print the
     * content to console
     private void printData(){
          System.out.println("No of Jobs '" + myJobs.size() + "'.");
          Iterator it = myJobs.iterator();
          while(it.hasNext()) {
               System.out.println(it.next().toString());
     public static void main(String[] args){
          //create an instance
          JobLogDetails JLD = new JobLogDetails();
          //call run example
          JLD.runJobDetails();
Job Class
public class Job {
     private String jobServer;
private String jobName;
private String jobClient;
private String jobStart;
private String jobType;
private String jobEnd;
private String jobSize;
     public Job(){
     public Job(String jobServer,String jobName,String jobClient,String jobStart,String jobType,String jobEnd,String jobSize ) {
          this.jobServer = jobServer;
          this.jobName = jobName;
          this.jobClient = jobClient;
this.jobStart = jobStart;
          this.jobType = jobType;
this.jobEnd = jobEnd;
this.jobSize = jobSize;
     public String getjobServer() {
          return jobServer;
     public void setjobServer(String jobServer) {
          this.jobServer = jobServer;
     public String getjobName() {
          return jobName;
     public void setjobname(String jobName) {
          this.jobName = jobName;
     public String getjobClient() {
          return jobClient;
     public void setjobClient(String jobClient) {
          this.jobClient = jobClient;
public String getjobStart() {
          return jobStart;
     public void setjobStart(String jobStart) {
          this.jobStart = jobStart;
public String getjobType() {
          return jobType;
     public void setjobType(String jobType) {
          this.jobType = jobType;
public String getjobEnd() {
          return jobEnd;
     public void setjobEnd(String jobEnd) {
          this.jobEnd = jobEnd;
public String getjobSize() {
          return jobSize;
     public void setjobSize(String jobSize) {
          this.jobSize = jobSize;
     public String toString() {
          StringBuffer sb = new StringBuffer();
sb.append(getjobServer());
          sb.append(",");
sb.append(getjobName());
          sb.append(",");
          sb.append(getjobClient());
          sb.append(",");
          sb.append(getjobType());
          sb.append(",");
          sb.append(getjobStart());
          sb.append(",");
          sb.append(getjobEnd());
          sb.append(",");
          sb.append(getjobSize());
          sb.append(",");
          return sb.toString();
Sample XML File:
<?xml version="1.0" encoding="UTF-16" ?>
- <joblog>
<job_log_version version="2.0" />
- <header>
<filler>======================================================================</filler>
<server>Job server: TGBBAK</server>
<name>Job name: TGBSAP4-SQL-SQL DB Servers S2T - High-Weekly Full Backup</name>
<start_time>Job started: 26 September 2011 at 01:00:04</start_time>
<type>Job type: Backup</type>
<log_name>Job Log: GFD_TGBBAK_71887.xml</log_name>
<filler>======================================================================</filler>
</header>
<media_mount_date>Drive and media mount requested: 26/09/2011 01:00:04</media_mount_date>
- <media_drive_and_media_info>
<media_mount_date>Drive and media information from media mount: 26/09/2011 01:00:39</media_mount_date>
<robotic_library_name>Robotic Library Name: HP 1</robotic_library_name>
<drive_name>Drive Name: LTO4_2</drive_name>
<slot>Slot: 43</slot>
<media_label>Media Label: 000059L</media_label>
<media_guid>Media GUID: {a6ca0062-7a6f-4b4b-8144-732ca25f2f9d}</media_guid>
<media_overwrite_date>Overwrite Protected Until: 25/10/2011 19:24:58</media_overwrite_date>
<media_append_date>Appendable Until: 02/10/2011 14:00:30</media_append_date>
<media_set_target>Targeted Media Set Name: Weekly Tape</media_set_target>
</media_drive_and_media_info>
- <backup>
<filler>======================================================================</filler>
<title>Job Operation - Backup</title>
<append_or_overwrite>Media operation - append.</append_or_overwrite>
<compression>Compression Type: Hardware [if available, otherwise none]</compression>
<verify_option>WARNING: The option 'Verify after backup completes' was not selected. Performing a verify operation to make sure that media can be read after the backup has completed is recommended.</verify_option>
<filler>======================================================================</filler>
- <machine>
<machine_name>TGBSAP4.Tetley.Grp</machine_name>
<info>Network control connection is established between 10.22.2.18:3271 <--> 10.22.2.4:10000</info>
<info>Network data connection is established between 10.22.2.18:3301 <--> 10.22.2.4:3094</info>
- <set>
<set_resource_name>TGBSAP4.Tetley.Grp</set_resource_name>
<tape_name>Family Name: "Media created 25/09/2011 13:59:55"</tape_name>
- <volume>
<display_volume>Backup of "TGBSAP4.Tetley.Grp "</display_volume>
</volume>
<description>Backup set #45 on storage media #1 Backup set description: "Weekly Full Backup"</description>
<backup_type>Backup Method: Full - Back up entire database or filegroup</backup_type>
<agent_started>Microsoft SQL Server Agent: Started</agent_started>
<start_time>Backup started on 26/09/2011 at 01:01:45.</start_time>
- <database>
<database>Database PRD</database>
</database>
- <database>
<database>Database master</database>
</database>
- <database>
<database>Database model</database>
</database>
- <database>
<database>Database msdb</database>
</database>
<end_time>Backup completed on 26/09/2011 at 02:42:25.</end_time>
- <summary>
<backed_up_database>Backed up 4 databases</backed_up_database>
<new_processed_bytes>Processed 573363576542 bytes in 1 hour, 40 minutes, and 40 seconds.</new_processed_bytes>
<vlm_hist_rateformat2>Throughput rate: 5432 MB/min</vlm_hist_rateformat2>
</summary>
<filler>----------------------------------------------------------------------</filler>
</set>
</machine>
</backup>
- <footer>
<filler>======================================================================</filler>
<end_time>Job ended: 26 September 2011 at 02:43:12</end_time>
<engine_completion_status>Job completion status: Successful</engine_completion_status>
<filler>======================================================================</filler>
<completeStatus>19</completeStatus>
</footer>
</joblog>

Answer 1

1. your code does not compile (in your main method you try to create an instance of a class which does not exist).
2. your XML document is not well formed.
+[Fatal Error] test.xml:34:74: The content of elements must consist of well-formed character data or markup.+
org.xml.sax.SAXParseException: The content of elements must consist of well-formed character data or markup.
Maybe there are other problems but you can start by fixing these.