private  Document setEncoding(Document document) {
         try  {
            Transformer transformer = TransformerFactory.newInstance().newTransformer();
            transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            transformer.setOutputProperty(OutputKeys.ENCODING, "iso-8859-1");
            
            DOMSource source =  new  DOMSource(document);
            
            Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
            DOMResult result =  new  DOMResult(doc);
            
            transformer.transform(source, result);
            
             return  (Document) result.getNode();
            
        }  catch  (TransformerConfigurationException tce) {
            System.out.println("TransformerConfigurationException exception.");
             return  document;
            
        }   catch  (TransformerException te) {
            System.out.println("TransformerException exception.");
             return  document;
            
        }  catch  (ParserConfigurationException pce) {
            System.out.println("ParserConfigurationException exception.");
             return  document;
        }
    }

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="iso-8859-1"?>