Java create xml and read

Java create xml and read

package ball.Xml;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Comment;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;

public class CreateXml {
 private String output;
 public static void main(String[] args ) throws TransformerConfigurationException, IOException{
  new CreateXml();
 }
 public CreateXml() throws TransformerConfigurationException, IOException{
  System.out.println("Create Element");
  output = "output.xml";
  CreateElement();
  ReadXml();
 }
 private void CreateElement() {
  try {
            /////////////////////////////
            //Creating an empty XML Document
            //We need a Document
            DocumentBuilderFactory dbfac = DocumentBuilderFactory.newInstance();
            DocumentBuilder docBuilder = dbfac.newDocumentBuilder();
            Document doc = docBuilder.newDocument();

            ////////////////////////
            //Creating the XML tree

            //create the root element and add it to the document
            Element root = doc.createElement("root");
            doc.appendChild(root);

            //create a comment and put it in the root element
            Comment comment = doc.createComment("Just a thought");
            root.appendChild(comment);

            //create child element, add an attribute, and add to root
            Element child = doc.createElement("child");
            root = addAttribute(root,child,"a","b");
            root = addAttribute(root,child,"x","a");
            root = addAttribute(root,child,"x","a");

            //add a text element to the child
            Text text = doc.createTextNode("Filler, ... I could have had a foo!");
            child.appendChild(text);
            Element info = doc.createElement("Information");
            root.appendChild(info);
            root = addAttribute(root, info, "Name", "Wongsakorn");
            info.appendChild(doc.createTextNode("Hello"));
            root = addAttribute(root, info, "SureName", "Kongosod");
            /////////////////
            //Output the XML

            //set up a transformer
            TransformerFactory transfac = TransformerFactory.newInstance();
            Transformer trans = transfac.newTransformer();
            trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
            trans.setOutputProperty(OutputKeys.INDENT, "yes");
            StreamResult result = new StreamResult(new File(output));
            DOMSource source = new DOMSource(doc);
            trans.transform(source, result);

        } catch (Exception e) {
            System.out.println(e);
        }
 }
 private void ReadXml() throws TransformerConfigurationException, IOException {
        //print xml
        System.out.println("Here's the xml:\n");
        InputStream ins = new FileInputStream(new File(output));
        DataInputStream data = new DataInputStream(ins);
        BufferedReader reader = new BufferedReader(new InputStreamReader(data));
        String strLine = "";
        while ((strLine = reader.readLine())!=null) {
   System.out.println(strLine);
  }
 }
 private Element addAttribute(Element root, Element child, String name,String value) {
  child.setAttribute(name, value);
        root.appendChild(child);
  return root;
 }
}

output:

<root>
<!--Just a thought-->
<child a="b" x="a">Filler, ... I could have had a foo!</child>
<Information Name="Wongsakorn" SureName="Kongosod">Hello</Information>
</root>