private static Element addElement(Document doc,Node parent,String tagName,String attr1,String val1,String attr2,String val2){
  Element elem=doc.createElement(tagName);
  if (attr1 != null)   elem.setAttribute(attr1,val1);
  if (attr2 != null)   elem.setAttribute(attr2,val2);
  parent.appendChild(elem);
  return elem;
}

private static Element addElement ( Document doc , Node parent , String tagName , String attr1 , String val1 , String attr2 , String val2 ) { Element elem = doc . createElement ( tagName ) ; if ( attr1 != null ) elem . setAttribute ( attr1 , val1 ) ; if ( attr2 != null ) elem . setAttribute ( attr2 , val2 ) ; parent . appendChild ( elem ) ; return elem ; }
add element to xml document .
