import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamWriter;
 
class xml {
 
  public static void main(String[] args) throws Exception{
    XMLStreamWriter xsw = XMLOutputFactory.newInstance()
      .createXMLStreamWriter(System.out);
    xsw.writeStartDocument();
    xsw.writeStartElement("root");
    xsw.writeStartElement("child");
    xsw.writeAttribute("c", "3");
    xsw.writeAttribute("b", "2");
    xsw.writeAttribute("a", "1");
    xsw.writeEndElement();
    xsw.writeEndDocument();
    xsw.close();
  }
}

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