import java.io.File;
import java.util.HashMap;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.*;

public class XmlWriter {

   public static void main(String[] args) {
      try {
         //Sample Data (countries and capitals)
         HashMap<String, String> data = new HashMap<String, String>();
         data.put("Egypt",   "Cairo");
         data.put("Finland", "Helsinki");
         data.put("Japan",   "Tokyo");

         //Create DOM (with top-level node)
         DocumentBuilder xmlBuilder =
            DocumentBuilderFactory.newInstance().newDocumentBuilder();
         Document xmlDoc = xmlBuilder.newDocument();
         Node node = xmlDoc.createElement("countries");
         xmlDoc.appendChild(node);  //top-level node

         //Add Data to DOM
         for (String key : data.keySet()) {
            Element elem = xmlDoc.createElement("country");
            elem.setAttribute("capital", data.get(key));   //attrib
            elem.appendChild(xmlDoc.createTextNode(key));  //content
            node.appendChild(elem);
            }

         //Write DOM to XML file
         Source source = new DOMSource(xmlDoc);
         Result result = new StreamResult(new File("countries.xml"));
         Transformer xformer =
            TransformerFactory.newInstance().newTransformer();
         xformer.setOutputProperty(OutputKeys.INDENT, "yes");
         xformer.transform(source, result);
         }
      catch (Exception e) {
         System.out.println(e.getMessage());
         }
      }

   }