Document to formatted XML file

Question

I have a question. I have written a sample java program that will create an xml file. The program works properly, but the generated xml is not formatted. How can i format the xml file.
The java program code is
package com.spi.xml;
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.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class WriteXML {
static Document document;
public static void buildDOM() {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder builder = factory.newDocumentBuilder();
document = builder.newDocument();
Element root = (Element) document.createElement("GUI");
document.appendChild(root);
Element curElement = document.createElement("Button");
curElement.appendChild(document.createTextNode("Submit"));
root.appendChild(curElement);
curElement = document.createElement("Button");
curElement.appendChild(document.createTextNode("Cancel"));
root.appendChild(curElement);
// Save the document to the disk file
TransformerFactory tranFactory = TransformerFactory.newInstance();
Transformer aTransformer = tranFactory.newTransformer();
Source src = new DOMSource(document);
Result dest = new StreamResult(new File("C:\\xmlFileName.xml"));
aTransformer.transform(src, dest);
} catch (Exception pce) {
pce.printStackTrace();
public static void main(String[] args) {
buildDOM();
The output (XML file)
<?xml version="1.0" encoding="UTF-8"?>
<GUI><Button>Submit</Button><Button>Cancel</Button></GUI>
How can i format the xml file for multiple lines? I cant't use other libraries (Xerces,JDOM,Xalan) cause they are to big - the application is an applet.

Answer 1

I don't think the DOM stuff in the core API provides any pretty printing facilities, unless they were added in 5.0.
I know that jdom does--http://www.jdom.org
You might also check out apache's XML stuff--http://xml.apache.org/
Or dom4j--http://www.dom4j.org/