Java Utililty Methods XML Document Serialize

TransformerFactory fac = TransformerFactory.newInstance();
Transformer tf = fac.newTransformer();
tf.setOutputProperty(OutputKeys.INDENT, "yes"); 
Source input = new DOMSource(doc.getDocumentElement());
Result output = new StreamResult(out);
tf.transform(input, output);

Transformer transformer;
try {
    transformer = TransformerFactory.newInstance().newTransformer();
    Result output = new StreamResult(new File(filepath));
    Source input = new DOMSource(doc);
    transformer.transform(input, output);
} catch (TransformerConfigurationException e) {
    e.printStackTrace();
...

try {
    doSerialize(d, f);
} catch (TransformerException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();

Source source = new DOMSource(d);
Transformer transformer = null;
if (transformerLocation != null) {
    Source stylesource = new StreamSource(transformerLocation.toString());
    transformer = tFactory.newTransformer(stylesource);
} else
    transformer = tFactory.newTransformer();
String documentEncoding = d.getXmlEncoding();
...

TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
DOMSource src = new DOMSource(doc);
StreamResult res = new StreamResult(System.out);
t.transform(src, res);

TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
...

Writer writer = new StringWriter();
serialize(document, prettyPrint, writer);
return writer.toString();

DOMImplementationLS impl = getDOMImpl();
LSSerializer serializer = impl.createLSSerializer();
DOMConfiguration config = serializer.getDomConfig();
if (prettyPrint && config.canSetParameter("format-pretty-print", Boolean.TRUE)) {
    config.setParameter("format-pretty-print", true);
config.setParameter("xml-declaration", true);
LSOutput output = impl.createLSOutput();
...

try {
    Transformer t = TransformerFactory.newInstance().newTransformer();
    t.transform(new DOMSource(document), new StreamResult(targetFile));
} catch (TransformerException e) {
    throw new IOException(e);

Source domSource = new DOMSource(document);
try {
    Transformer serializer = TransformerFactory.newInstance().newTransformer();
    try {
        serializer.setOutputProperty(OutputKeys.INDENT, "yes");
        serializer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
        serializer.setOutputProperty(OutputKeys.ENCODING, "UTF-16");
    } catch (IllegalArgumentException e) {
...