Formatting XML written to a file

Question

Hi,
I am trying to write runtime data (XML) to a file. I am doign the following to write to the file:
public void saveFile() throws Exception {
try {
TransformerFactory transformerFactory =
TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
OutputStream output = new FileOutputStream(XMLFile);
StreamResult result = new StreamResult();
transformer.transform(source, result);
output.flush();
output.close();
} catch (Exception x) {
throw x;
The output from the above code is a clutter of elements. All the elements are on the same line some times.
1) How can I format the output? (Indent the elements in the file)
Is there a way to achieve this?
Sometimes, I see a square character at the end of some lines. I thought the output file is corrupt because of this character. But it does not seem to be a problem.
2) How do I avoid this character?

Answer 1

Duplicate of the following thread:
Format XML data when writing to a file
-Blaise