xml - java append to file

Question

I googled for this for a while but can't seem to find it and it should be easy. I want to append a CR to then end of an XML file that I am creating with a Transformer. Is there a way to do this>

I tried the following but this resulted in a blank file?

Transformer xformer = TransformerFactory.newInstance().newTransformer();
xformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, "file:///ReportWiz.dtd");
xformer.transform(source, result);
OutputStream writer = new FileOutputStream(file);
Byte b = '
';
writer.write(b);
writer.close();

Answer 1

Simple... just add the append option:

    new FileOutputStream(f, true /* append */);