Problem with xml parser

Hello!

I would like tp parse a xml-file.

I use the DocumentBuilderFactory from IBM XML-API,

but I get the error:

java.lang.NoClassDefFoundError: javax/xml/parsers/DocumentBuilderFactory

All xml librarys are included!

What's the reason for this?

May there be a conflict between xml portal classes and IBM API classes?

Thanks for your help!

Thomas