XOM API for Processing XML with Java

[Jean Pierre Malrieu <jp.malrieu AT free.fr>]

Hi,

As you will discover very soon, I know very little about XML and XML  
schemas...
I want to use XOM to generate xml documents, because XOM seems to be  
easier to understand than other APIs.

My documents must look like this:

<?xml version="1.0" encoding="UTF-8"?>
<assessmentItem xmlns="http://www.imsglobal.org/xsd/imsqti_v2p1";
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
    xsi:schemaLocation="http://www.imsglobal.org/xsd/imsqti_v2p1  
imsqti_v2p1.xsd"
        title = "title">
    <responseDeclaration>
        blabla
    </responseDeclaration>
</assessmentItem>

Therefore I have tried to write the following java code:

Element root = new Element("assessmentItem");
root.setNamespaceURI("http://www.imsglobal.org/xsd/imsqti_v2p1";);
root.addNamespaceDeclaration("xsi","http://www.w3.org/2001/XMLSchema- 
instance");
root.addAttribute(new Attribute("xsi:schemaLocation", "http:// 
www.w3.org/2001/XMLSchema-instance", "http://www.imsglobal.org/xsd/ 
imsqti_v2p1 imsqti_v2p1.xsd"));
root.addAttribute(new Attribute("title,"title"));
Element rp = new Element("responseDeclaration");

but this leads to an output like:

<?xml version="1.0" encoding="UTF-8"?>
<assessmentItem
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
        title = "title"
    xsi:schemaLocation="http://www.imsglobal.org/xsd/imsqti_v2p1  
imsqti_v2p1.xsd"
        xmlns="http://www.imsglobal.org/xsd/imsqti_v2p1";>
    <responseDeclaration xlmns="">
        blabla
    </responseDeclaration>
</assessmentItem>

which is not valid.
How do I get rid of the xmlns="" in the responseDeclaration element?

Thanks.

JPM