Getting XML error ?

Question

Am trying to create a XML file but are getting this error:
org.apache.crimson.tree.DomEx: HIERARCHY_REQUEST_ERR: This node isn't allowed there.
at org.apache.crimson.tree.XmlDocument.appendChild(XmlDocument.java:661)
at layout.funktion.GemXML.indlaesObj(GemXML.java:88)
at layout.funktion.GemXML.<init>(GemXML.java:44)
at layout.funktion.GemXML.main(GemXML.java:119)
My test code;
        try
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();
            document = builder.newDocument();
            rootElement = document.createElement("XMLTest");
        catch(javax.xml.parsers.ParserConfigurationException e)
            e.printStackTrace();
        for(int i=0;i<feltListe.size();i++)
            childElement = document.createElement("felt");
            rootElement.appendChild(childElement);
            for(int j=0;j<antal;j++)
                grandChildElement = document.createElement("tag");
                grandChildElement.appendChild(document.createTextNode("tagValue"));
                childElement.appendChild(grandChildElement);
            document.appendChild(rootElement); //THIS IS WHERE I GET ERROR
        }Can someone plz tell me what am doing wrong?

Answer 1

You append the root element more than one time!...
        try        {
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();
            document = builder.newDocument();
            rootElement = document.createElement("XMLTest");
        catch(javax.xml.parsers.ParserConfigurationException e)        {
            e.printStackTrace();
        for(int i=0;i<feltListe.size();i++)        {
            childElement = document.createElement("felt");
            rootElement.appendChild(childElement);
            for(int j=0;j<antal;j++)            {
                grandChildElement = document.createElement("tag");
                grandChildElement.appendChild(document.createTextNode("tagValue"));
                childElement.appendChild(grandChildElement);
// Just remove this line!           
//          document.appendChild(rootElement); //THIS IS WHERE I GET ERROR
        }