Whitespace in XML blows up my code

I know this points to bad code. Here's my question. First of all I have to run java 1.3.xx for this project. I've created a web service returning data to the client. The client is using:
javax.xml.parsers.DocumentBuilder;
javax.xml.parsers.DocumentBuilderFactory;
to build the document. Also I had to import
org.w3c.dom
so I assume that's the implementation. As the data is in a proprietary format I used the following to get the nodes and values I wanted:
    for(int a = 0; a < tmp.getChildNodes().getLength(); a++)
      Node type = null;
      Node name = null;
      if(tmp.getChildNodes().item(a).getChildNodes().item(0).getNodeName().equals("FieldName"))
        name = tmp.getChildNodes().item(a).getChildNodes().item(0);
      if(tmp.getChildNodes().item(a).getChildNodes().item(1).getNodeName().equals("FieldName"))
        name = tmp.getChildNodes().item(a).getChildNodes().item(1);etc etc. All was fine until I changed my web service to return a more human readable format a la
<mainNode>
<childNode>value</childNode>
<childNode>value</childNode>
</mainNode> I added the new lines and the indenting. I get null pointers from the Document parsing. So, I guess the whitespace breaks things. Is there a better parser I should be using? Do all parsers have idiosyncracies like this? Should I be doing some type of formatting the data prior to parsing?
Thanks
ST

Dr., I'm glad to see that you're still posting here. I've been away for a while.
I'm curious and confused. Consider the following:
ex 1:
<elementA>
<elementB>value</elementB>
<elementB>value</elementB>
</elementA>
ex 2:
<elementA><elementB>value</elementB><elementB>value</elementB></elementA>Aren't both examples syntactically the same? This is the difference that I am seeing. The second example works with my code, the first does not.
Thank you for your thoughts.
ST

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I know it's an old post, but I found this while doing a google search for something else, and don't like to leave it un-aswered
Just in case anyone has a similar problem... In this case the new elements have been appended outside of the root element
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// gets the root element of the specified file (code not shown)
Element rootElement= new SAXReader().read(file).getRootElement();Then just append the new elements as below (this is non-generic code and would need to be modified for your situation)
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Element student = document.createElement("Student"); // creates the new student
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The code works fine.. except for the fact that when in the input XML message i get one element as
<Element-3042> </Element-3042>
it converts it to
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The whitespace is removed...
I tried using the xml parser method...and whitespacepreserver optioin...but it creates some extra lines...
Which i dont want.
Please suggest.
Thanks,
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