java xml String document 변환 하는 방법

try {
	String data = "xml 데이터";
	DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
	DocumentBuilder builder = factory.newDocumentBuilder();
	InputSource is = new InputSource( new StringReader( data ) );
	Document doc = builder.parse( is );			

} catch (Exception e) {
	e.printStackTrace();
}