/***** Code de MesExemples.com *******/
/**
 * @(#)XMLSubTreeFromDocToDoc.java
 *
 *
 * @author 
 *sakoba(java.mesexemples.com) @version 1.00 2013/7/5
 */
import java.io.File;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class XMLSubTreeFromDocToDoc {
  public static void main(String[] argv) throws Exception 
  	{
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setValidating(false);
    factory.setExpandEntityReferences(false);
    Document doc1 = factory.newDocumentBuilder().parse(new File("test.xml"));
    NodeList list_node = doc1.getElementsByTagName("entry");
    Element element = (Element) list_node.item(0);
    Document doc2 = factory.newDocumentBuilder().parse(new File("test2.xml"));
    Node dup = doc2.importNode(element, true);
    doc2.getDocumentElement().appendChild(dup);
  }
}
Code testé avec le fichier XML Suivant
	Sakoba 
	Adams 
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	Ne m'oubliez pas ce week-end!
 
    