Adding PI in XML Document

[Sambasivarao_Potla <Sambasivarao_Potla@satyam.com>]

 Hi All,

 How to add stylesheet processing intstruction in a xml document which is
generated by DOM.

 Here is the code am trying 

             String data = "type=\"text/xsl\" href=\"cdcatalog.xsl\"";
	 ProcessingInstruction pi =
doc.createProcessingInstruction("xml-stylesheet",data); 
  	doc.appendChild( pi );	

 But when I write to a file after finishing no pi appeares in xml document.

 When I tried with following code..

             String data = "type=\"text/xsl\" href=\"cdcatalog.xsl\"";
	 ProcessingInstruction pi =
doc.createProcessingInstruction("xml-stylesheet",data); 
             root.insertBefore((Node)pi,root.getFirstChild());

 Then I found the following in xml document
            <?xml version="1.0" ?>
             <root>
 	<?xml-stylesheet type="text/xsl" href="cdcatalog.xsl"?>
	.....
	</root>

 But I want to generate like 

            <?xml version="1.0" ?>
 	<?xml-stylesheet type="text/xsl" href="cdcatalog.xsl"?>
             <root>
	.....
	</root>


 TIA,
 Samba
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