I thought that the writeAttribute made the code a bit easier to read.
Also, concatenating strings before writing them to the Writer does add
overhead.
I did some similar work (with others) on a similar writer implementation in
February and removing the string concats and using additional write call
I like the idea of using XML-specific startElement, endElement, and
writeAttribute functions so that the code doesn't get littered with angle
brackets, quotes, and escaping attributes that contain quotes, ampersands,
and other characters.
I think Java will convert "a"+"b"+"c" into
StringBuilder("a
