not able to create XML through DOM...

[ankur rathi]

    
package com.my;
 
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
 
import org.w3c.dom.Document;
import org.w3c.dom.Element;
 
public class XMLExample {
 
public static void main(String[] args) throws ParserConfigurationException {
 
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.newDocument();
Element rootElement = doc.createElement("root");
doc.appendChild(rootElement);
rootElement.appendChild(doc.createTextNode("content"));
System.out.println("doc : " + doc);
}
}
 
output: 
-------
 
doc : [#document: null]
 

Why, I am not getting any XML file on console???

Thanks.

[Pradeep bhatt]

Where is doc.appendChild(rootElement)

[ankur rathi]

Originally posted by Pradip Bhat:
Where is doc.appendChild(rootElement)

It's 5th line of main method.

[Paul Clapham]

That's because the toString() method of Document returns "null". I expect you were assuming that it would return a text representation of the Document, but if you look at the API documentation you will see there is no such promise there.

The usual way to produce an XML document from a DOM is to create a Transformer object whose input comes from the DOM and whose output points where you want the document to go, and to call its transform() method.

[ankur rathi]

Originally posted by Paul Clapham:
That's because the toString() method of Document returns "null". I expect you were assuming that it would return a text representation of the Document, but if you look at the API documentation you will see there is no such promise there.

The usual way to produce an XML document from a DOM is to create a Transformer object whose input comes from the DOM and whose output points where you want the document to go, and to call its transform() method.

Thanks Paul.

But that's not correct, toString() method prints text representation of document.

[William Brogden]

But that's not correct, toString() method prints text representation of document.

Look at the JavaDocs for org.w3c.Node - specifically the table showing what the nodeName and nodeValue values are - note that a Document Node returns null for nodeValue.
Now, is some implementations of the DOM, Document.toString returns a full text string BUT in the Java 1.5 implementation, toString returns the result of a call to nodeValue() which is - as seen above - null.
Document is an interface so it does NOT dictate what toString() should return. This has caused a lot of confusion and hunting for bugs that do not exist.
Bill

[Shrinivas Mujumdar]

That's Right.
Use javax.xml.transform(or transformer whatever!!) package.

Shriniwas