Servlet XML Output Problem

I am working on a class that will allow me to write XML documents to standard text output. I have a class with a method PostDoc() that performs the following...

try {
 TransformerFactory tFactory = TransformerFactory.newInstance();
 Transformer t = tFactory.newTransformer();
 t.transform(new DOMSource(document),new StreamResult(new File(strFileName)));
   } catch(Exception e) {...}

When I run this from a test command line application the classes perform properly but when I try and load this via a servlet on Tomcat I get the error
 "java.lang.SecurityException: sealing violation"

I am at a loss. Is this a java problem or a tomcat configuration problem? Any idea on how I correct the problem?

TIA
John
LVL 1
jkb2Asked:
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jasonbromeConnect With a Mentor Commented:
Tomcat contains a portion of the classes found in  Xalan.jar.  

To resolve this issue, all you need to do is ensure that the JAXP jars (xalan.jar, jaxp.jar and crimson.jar) are defined first, before the Tomcat jars, in the classpath.
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jkb2Author Commented:
Beautiful. I was beating my head against the wall on this one. Thanks
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lwinkenbCommented:
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