private
NodeList root(
final
String url ,
final
String str){
NodeList root = null ;
try {
InputSource is= new InputSource( new InputStreamReader( new URL(url).openStream()));
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance ();
DocumentBuilder dom = factory.newDocumentBuilder();
Document doc = dom.parse(is);
root = doc.getElementsByTagName(str);
} catch (Exception e){
e.printStackTrace();
}
return root;
}