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Exception using Java and XSLT to parse XHTML input file

I am using the following application:

import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;

public class Transform {

/**
* Performs an XSLT transformation, sending the results
* to System.out.
*/
public static void main(String[] args) {
try{
if (args.length != 3) {
System.err.println(
"Usage: java Transform [xmlfile] [xsltfile]");
System.exit(1);
}

File xmlFile = new File(args[0]);
File xsltFile = new File(args[1]);
File xmlDest = new File(args[2]);

// JAXP reads data using the Source interface
Source xmlSource = new StreamSource(xmlFile);
//xmlSource.setSystemId("http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd");
Source xsltSource = new StreamSource(xsltFile);

// the factory pattern supports different XSLT processors
TransformerFactory transFact =
TransformerFactory.newInstance();
Transformer trans = transFact.newTransformer(xsltSource);
trans.transform(xmlSource, new StreamResult(xmlDest));
}

catch (TransformerException e2) {
       System.out.println("Transformer Exception cause = " + e2);
}
catch (Exception e) {
       System.out.println("Exception ==== " + e);
}
}
}

to parse an XHTML input file with a DOCTYPE tag as the first tag as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

I call the application from the command line as follows:
java Transform input.xml stylesheet.xsl output.xml

It throws the following exception:
ERROR: 'Connection timed out: connect'
ERROR: 'com.sun.org.apache.xml.internal.utils.WrappedRuntimeException: Connection timed out: connect'
Transformer Exception cause = javax.xml.transform.TransformerException: javax.xml.transform.TransformerException: com.sun.org.apache.xml.internal.utils.WrappedRuntimeException: Connection timed out: connect

Please help,
Dave