Java.lang.NullPointerException javax.xml.parsers.DocumentBuilder.parse

Question

Hi all,
i have a problem by solving an error in my code. The Code is mainly from Ian Darwin.
The code i am running works with j2sdk1.4.2_04. But now i have to bring it to work with jdk1.6.0_13.
The code parses xml documents. With small xml documents the code works. With large xml documents i get the following error while running the produced class file.
Exception in thread "main" java.lang.NullPointerException
at com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl.setChunkIndex(DeferredDocumentImpl.java:1944)
at com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl.appendChild(DeferredDocumentImpl.java:644)
at com.sun.org.apache.xerces.internal.parsers.AbstractDOMParser.characters(AbstractDOMParser.java:1191)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.characters(XMLDTDValidator.java:862)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:463)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:225)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:208)
at XParse.parse(XParse.java:38)
at XParse$JFileChooserrv.<init>(XParse.java:119)
at XParse.main(XParse.java:213)
I know what a java.lang.NullPointerException mens. But i don't know where i have to look for. Specially i don't know what or where "com.sun.org.apache...." is.
Is there a package that a have to add to the environment? Can some one tell my where i can find this package?
I wrote the code for some years ago, 2006 or so. With the knew jdk1.6.0_13 some thinks chance in the environment. Couldn't find what exactly.
The code has only 215 lines, but some how i can't add it to this Message, because Maximum allowed is only 7500.
Is there an other Forum, which may is better for my question?

Answer 1

Here is the code:
import java.io.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import java.awt.Container;
import javax.swing.JTextArea;
* This code is mainly from @author Ian Darwin, [email protected]
public class XParse {
     /** Convert the file */
     public static void parse(File file, boolean validate) {
          try {
               System.err.println("");
               String fileName = file.getAbsolutePath();
               System.err.println("Parsing " + fileName + "...");
               // Make the document a URL so relative DTD works.
               //String uri = new File(fileName).getAbsolutePath();
               //System.err.println(uri);
               DocumentBuilderFactory f = DocumentBuilderFactory.newInstance();
               if (validate)
               f.setValidating(true);
               DocumentBuilder p = f.newDocumentBuilder();
               p.setErrorHandler(new MyErrorHandler(System.err));
               //XmlDocument doc = XmlDocument.createXMLDocument(file);
               boolean vaild =  p.isValidating();
               if (vaild) {
                    System.out.println("yes parsing");
                    Document doc = p.parse(file); // <<<< ERROR
               System.out.println("Parsed OK");
          } catch (SAXParseException ex) {
               System.err.println("+================================+");
               System.err.println("|       *SAX Parse Error*        |");
               System.err.println("+================================+");
               System.err.println(ex.toString());
               System.err.println("At line " + ex.getLineNumber());
               System.err.println("+================================+");
          } /**catch (RuntimeException ex) {
               System.err.println("+================================+");
               System.err.println("|       *SAX Parse Error*        |");
               System.err.println("+================================+");
               System.err.println(ex.toString());
               //System.err.println("At line " + ex.getLineNumber());
               //System.err.println("At line " + ex.getMessage());
               System.err.println("+================================+");
          }**/ catch (SAXException ex) {
               System.err.println("+================================+");
               System.err.println("|          *SAX Error*           |");
               System.err.println("+================================+");
               System.err.println(ex.toString());
               System.err.println("+================================+");
          /*}} catch (SAXNotRecognizedException  ex) {
               System.err.println(" no SAX");*/
          } catch (ParserConfigurationException ex) {
               System.err.println(" ???");
           } catch (IOException ex) {
               System.err.println("+================================+");
               System.err.println("|           *XML Error*          |");
               System.err.println("+================================+");
               System.err.println(ex.toString());
private static class JFileChooserrv {
     JFileChooserrv(JFrame f, boolean vverabreiten) {
          String openfile;
          String verror;
          boolean validate = true;
          final JFrame frame = f;
          String vFilename = "Z:\\Boorberg\\parsen_vista\\daten";
          //String vFilename = "C:\\";
          File vFile = new File(vFilename);
          final JFileChooser chooser = new JFileChooser(vFile);
          JFileFilter filter = new JFileFilter();
          filter.addType("xml");
          filter.addType("sgml");
          filter.addType("html");
          filter.addType("java");
          filter.setDescription("strukturfiles");
          chooser.addChoosableFileFilter(filter);
          boolean vjeas = true;
          chooser.setMultiSelectionEnabled(vjeas);
          int returnVal = chooser.showOpenDialog(frame);
          if (returnVal == JFileChooser.APPROVE_OPTION) {
               //Array  filearry[] = chooser.getSelectedFiles();
               //if (vFile = chooser.getSelectedFiles()) {
               //File  file[] = chooser.getSelectedFiles();
               File  vfile[] = chooser.getSelectedFiles();
               //String openfile = new String();
               int vlenght = vfile.length;
               if (vlenght>1) {
                    int x=0;
                    while (x< vlenght) {
                              parse(vfile[x], validate);
                              x = x +1;
               if (vlenght<=1) {
                    File v2file = chooser.getSelectedFile();
                         parse(v2file, validate);
          } else {
               System.out.println("You did not choose a filesystem           object.");
     System.exit(0);
private static class JFileFilter extends javax.swing.filechooser.FileFilter {
     protected String description, vnew;
     protected ArrayList<String> exts = new ArrayList<String>();
     protected boolean vtrue;
     public void addType(String s) {
          exts.add(s);
     /** Return true if the given file is accepted by this filter. */
     public boolean accept(File f) {
          // Little trick: if you don't do this, only directory names
          // ending in one of the extentions appear in the window.
          if (f.isDirectory()) {
               return true;
          } else if (f.isFile()) {
               Iterator it = exts.iterator();
               while (it.hasNext()) {
                    if (f.getName().endsWith((String)it.next()))
                         return true;
          // A file that didn't match, or a weirdo (e.g. UNIX device file?).
          return false;
     /** Set the printable description of this filter. */
     public void setDescription(String s) {
          description = s;
     /** Return the printable description of this filter. */
     public String getDescription() {
          return description;
private static class MyErrorHandler implements ErrorHandler {
        // Error handler output goes here
        private PrintStream out;
        MyErrorHandler(PrintStream out) {
            this.out = out;
         * Returns a string describing parse exception details
        private String getParseExceptionInfo(SAXParseException spe) {
            String systemId = spe.getSystemId();
            if (systemId == null) {
                systemId = "null";
            String info = "URI=" + systemId +
                " Line=" + spe.getLineNumber() +
                ": " + spe.getMessage();
            return info;
        // The following methods are standard SAX ErrorHandler methods.
        // See SAX documentation for more info.
        public void warning(SAXParseException spe) throws SAXException {
               //System.exit(0);
            //out.println("Warning: " + getParseExceptionInfo(spe));
        public void error(SAXParseException spe) throws SAXException {
               //System.exit(0);
            String message = "Error: " + getParseExceptionInfo(spe);
            throw new SAXException(message);
        public void fatalError(SAXParseException spe) throws SAXException {
               //System.exit(0);
            String message = "Fatal Error: " + getParseExceptionInfo(spe);
            throw new SAXException(message);
     public static void main(String[] av) {
          JFrame vframe = new JFrame("chose files to pars");
          boolean vverabreiten = true;
          boolean validate = true;
          JFileChooserrv vdateienwaehlen = new JFileChooserrv(vframe, vverabreiten);
}The Stack Trace i posted in the last Message. But i couldn't read it, i am not a programmer.