Java tutorial
import java.io.File; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; public class Main { public static void main(String[] argv) throws Exception { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setValidating(true); factory.setExpandEntityReferences(false); Document doc = factory.newDocumentBuilder().parse(new File("filename")); NodeList list = doc.getElementsByTagName("entry"); Element element = (Element) list.item(0); Element dup = (Element) element.cloneNode(true); element.getParentNode().insertBefore(dup, element.getNextSibling()); } }