code for XMLEventReader and XMLEventWriter for Stax XML parser

import java.util.Calendar;
import javax.xml.stream.XMLEventFactory;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLEventWriter;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.XMLEvent;


class StaxEvent {
XMLEventFactory m_eventFactory = XMLEventFactory.newInstance();

public static void main(String[] args) throws Exception {
StaxEvent ms = new StaxEvent();

XMLEventReader reader = XMLInputFactory.newInstance().createXMLEventReader(new java.io.FileInputStream("yourXML.xml"));
XMLEventWriter writer = XMLOutputFactory.newInstance().createXMLEventWriter(System.out);

while (reader.hasNext()) {
XMLEvent event = (XMLEvent) reader.next();

if (event.getEventType() == event.CHARACTERS) {
writer.add(ms.getNewCharactersEvent(event.asCharacters()));
} else {
writer.add(event);
}
}
writer.flush();
}

private Characters getNewCharactersEvent(Characters event) {
if (event.getData().equalsIgnoreCase("Name1")) {
return m_eventFactory.createCharacters(Calendar.getInstance().getTime().toString());
} else {
return event;
}
}
}