You could use it like sample :

<?xml version="1.0" encoding="UTF-8"?>
<car vin="123fhg5869705iop90">
  <!--Description of a car-->
  <make>Toyota</make>
  <model>Celica</model>
  <year>1997</year>
  <color>green</color>
  <license state="CA">1ABC234</license>
</car>

Element carElement = new Element("car");
Document myDocument = new Document(carElement);

carElement.addAttribute(new Attribute("vin", "123fhg5869705iop90"));

Element make = new Element("make");
make.addContent("Toyota");
carElement.addContent(make);

carElement.addContent(new Element("make").addContent("Toyota"));

carElement.addContent(new
 Element("model").addContent("Celica"));
carElement.addContent(new Element("year").addContent("1997"));
carElement.addContent(new Element("color").addContent("green"));
carElement.addContent(new Element("license")
    .addContent("1ABC234").addAttribute("state", "CA"));