How to use XMLEncoder to save Complicated XML??

I think I posted in an improper forum: java programming, so repost here. Please excuse me.
Dear friends, good weekend and happy thanksgivings.
I met a problem when I use XMLEncoder to generate a complicated XML like following:
<?xml version="1.0"?>
<messages>
<note ID="501">
    <to>Tove</to>
     <DeliveryAddress>
          <Street>12345</Street>
          <City>Parsinpany</City>
          <County>ABC</County>
          <State>NJ</State>
          <Country>USA</Country>
         </DeliveryAddress>
     <ContactID>
          <CompanyID>
               <Address>12345</Address>
               <City>Alnomre</City>
               <County>BBB</County>
               <State>TX</State>
               <Country>USA</Country>
              </CompanyID>
          <phone>1800-1234567</phone>
          <fax>123-456-7890</fax>
         </ContactID>
    <from>Jani</from>
    <heading>Reminder</heading>
    <body>Don't forget me this weekend!</body>
</note>
<note ID="502">
    <to>Jani</to>
    <from>Tove</from>
    <heading>Re: Reminder</heading>
    <body>I will not!</body>
</note>
</messages>How to use XMLEncoder to generate abobe XML or one that has namespaces in it??
I can use simple
XMLEncoder o = new XMLEncoder(new BufferedOutputStream(new FileOutputStream(filename)));
                              o.writeObject(mm.getBounds());     //get all position;
but cannot generate above complicated XML.
What is the right way to do it??
any good example??
Thanks

My question is also how to use XMLEncoder to create attributes and and namespace, add child nodes to its parent, or remove nodes from their parent etc
Thanks

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