[jdom-interest] XML DTD validation using JDOM

niranjan kumar maturi niranjanmaturi at rediffmail.com
Wed Sep 4 23:36:53 PDT 2002


I am trying to validate a XML file with a DTD file using JDOM. 
When I write a DTD file and its corresponding XML file, they are 
being validated as expected.

But for our homepage, we are using a pretty big standard DTD 

When i try to validate using this DTD file, i am getting errors 
not with the XML file but with the DTD file like:
Error on line 31 of document 
http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd: Next 
character must be ">" terminating <!ENTITY...> declaration 

Is it that dtd has versions, and the parsers i am using support an 
older version??? I am also using the latest SAX 2.0.1 parser. So i 
dont understand what the problem is???

The source code:
package samples;

import java.io.*;

import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;

public class SAXBuilderDemoTest {

public static void main(String[] args)
if ((args.length < 1) || (args.length > 3))
"Usage: java samples.SAXBuilderTest " +
"[XML document filename] ([expandEntities] [SAX Driver 

boolean expandEntities = true;

// Load filename and SAX driver class
String filename = args[0];
String saxDriverClass = null;
if (args.length > 1) {
if (args[1].equalsIgnoreCase("false")) {
expandEntities = false;
if (args.length > 2) {
saxDriverClass = args[2];

// Create an instance of the tester and test
try {
SAXBuilder builder = null;
if (saxDriverClass == null) {
builder = new SAXBuilder(true);
} else {
builder = new SAXBuilder(saxDriverClass, true);


Document doc = builder.build(filename);
XMLOutputter outputter = new XMLOutputter();
outputter.output(doc, System.out);

} catch (JDOMException e) {
} catch (IOException e) {

Niranjan Maturi

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