Java Utililty Methods XML Document Transform

try {
    Source source = new DOMSource(doc);
    File file = new File(targetFile);
    Result result = new StreamResult(file);
    TransformerFactory factoryT = TransformerFactory.newInstance();
    StreamSource stylesource = new StreamSource(xsl);
    Transformer transformer;
    transformer = factoryT.newTransformer(stylesource);
...

return transformDocument(xmlDocument, new Hashtable(), xsltFilename);

Transformer transformer = TransformerFactory.newInstance().newTransformer(new StreamSource(xsltFilename));
if (parameters != null) {
    for (Map.Entry<String, String> param : parameters.entrySet()) {
        transformer.setParameter(param.getKey(), param.getValue());
StringWriter stringWriter = new StringWriter();
StreamResult streamResult = new StreamResult(stringWriter);
...

DOMSource source = new DOMSource(node);
StreamResult result = new StreamResult(os);
transformer.transform(source, result);

TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
StringWriter writer = new StringWriter();
javax.xml.transform.Result result = new StreamResult(writer);
Source source = new DOMSource(importPackageDocument);
transformer.transform(source, result);
writer.close();
String xml = writer.toString();
...

final TransformerFactory transFactory = TransformerFactory.newInstance();
final Transformer transformer = transFactory.newTransformer();
final StringWriter buffer = new StringWriter();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
transformer.transform(new DOMSource(payload), new StreamResult(buffer));
return buffer.toString();

DOMConfiguration domConfig = xmldoc.getDomConfig();
DOMSource domSource = new DOMSource(xmldoc);
TransformerFactory tf = TransformerFactory.newInstance();
tf.setAttribute("indent-number", 4);
Transformer serializer = tf.newTransformer();
serializer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
serializer.setOutputProperty(OutputKeys.INDENT, "yes");
serializer.setOutputProperty(OutputKeys.VERSION, "1.0");
...

TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer(new StreamSource(stylesheet));
Document result = newDocument();
DOMResult domResult = new DOMResult(result);
transformer.transform(new DOMSource(input), domResult);
return result;

DOMSource source = new DOMSource(xmlDoc);
DOMSource xslSrc = new DOMSource(xslDoc);
TransformerFactory xformFactory = TransformerFactory.newInstance();
Transformer transformer = xformFactory.newTransformer(xslSrc);
java.io.StringWriter sw = new java.io.StringWriter();
StreamResult outXml = new StreamResult(sw);
transformer.transform(source, outXml);
return sw.toString();
...