Generate xml from xsd

XmlGenerator.java

package com.sixtree.xs2xml;

import java.io.File;

import javax.xml.namespace.QName;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.stream.StreamResult;

import jlibs.xml.Namespaces;
import jlibs.xml.sax.XMLDocument;
import jlibs.xml.xsd.XSInstance;
import jlibs.xml.xsd.XSParser;

import org.apache.xerces.xs.XSModel;
import org.xml.sax.SAXException;

/**
 * 
 * @author leijiang
 * @param arg0
 *            : source xsd location
 * @param arg1
 *            : destination xml location
 * @param arg2
 *            : root name
 * @param arg3
 *            : target namespace (if empty string is passed in, convert to null)
 */
public class XMLGenerator {
	public static void main(String[] args) {
		File xsd = new File(args[0]);
		XSInstance xsi = new XSInstance();
		xsi.generateOptionalAttributes = true;
		xsi.generateOptionalElements = true;

		args[3] = args[3].equalsIgnoreCase("") ? null : args[3];
		QName root = new QName(args[3], args[2]);

		XSModel xsmodel = new XSParser().parse(xsd.getAbsolutePath());
		xsmodel.getNamespaceItems();
		XMLDocument sampleXml;
		try {

			sampleXml = new XMLDocument(new StreamResult(args[1]), false, 4,
					null);
			xsi.generate(xsmodel, root, sampleXml);
			

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

		System.out.println("Sample xml has been generated");
	}
}

Me too facing the issue and any help would be highly appreciated. I may be missing a jar file in the classpath but couldn't figure out.

Please help!

Exception in thread "main" java.lang.NoSuchMethodError: org.apache.xerces.xs.XSObjectList.isEmpty()Z
at jlibs.xml.xsd.XSInstance$XSSampleVisitor$1.preProcess(XSInstance.java:265)
at jlibs.xml.xsd.XSInstance$XSSampleVisitor$1.preProcess(XSInstance.java:238)
at jlibs.core.graph.WalkerUtil.walk(WalkerUtil.java:41)
at jlibs.xml.xsd.XSInstance.generate(XSInstance.java:126)
at jlibs.xml.xsd.XSInstance.generate(XSInstance.java:93)
at com.mkls.ppa.XMLGenerator1.main(XMLGenerator1.java:64)