Dom , where goes this file created??

Question

class NewClass1
public static void main(String[] args)
try{
//Create instance of DocumentBuilderFactory
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
//Get the DocumentBuilder
DocumentBuilder docBuilder = factory.newDocumentBuilder();
//Create blank DOM Document
//where this documents goes ??? can't find it
Document doc = docBuilder.newDocument();
//create the root element
Element root = doc.createElement("root");
//all it to the xml tree
doc.appendChild(root);
//create a comment
Comment comment = doc.createComment("This is comment");
//add in the root element
root.appendChild(comment);

Answer 1

I forgot....
If you want to write the document to file explicitly do it - for example:
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
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;
public class WriteXMLFile
     public static void main(String args []){
          try{
               //Create instance of DocumentBuilderFactory
               DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
               //Get the DocumentBuilder
               DocumentBuilder docBuilder = factory.newDocumentBuilder();
               //Create blank DOM Document
               //where this documents goes ??? can't find it
               Document doc = docBuilder.newDocument();
               //create the root element
               Element root = doc.createElement("root");
               //all it to the xml tree
               doc.appendChild(root);
               //create a comment
               Comment comment = doc.createComment("This is comment");
               //add in the root element
               root.appendChild(comment);
              try {
                 // Prepare the DOM document for writing
                 Source src = new DOMSource(doc);
                 // Prepare the output file
                 File file = new File("myDocument.xml");
                 Result result = new StreamResult(file);
                 // Write the DOM document to the file
                 Transformer xformer = TransformerFactory.newInstance().newTransformer();
                 xformer.transform(src, result);
             } catch (TransformerConfigurationException e) {
             } catch (TransformerException e) {
          catch (Exception e) {
               // TODO: handle exception
}