NoClassDefFoundError: org/w3c/dom/ElementTraversal

[Mustapha Aoussar]

Hello!
I tried to install and run the *Shibboleth IdP* under *Jetty 7*, but I got
this error:
*java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal*

See the complete error here: *http://pastebin.com/idFBgnjd*

I opened a ticket in my web host to ask for help about this problem, and
they answered as follows:

You need to make sure that the xml-apis-2.10.0.jar file is properly
included on your CLASSPATH. I tried to get this working for you, but it
looks like there is some code inside the program that is overriding the
environment's CLASSPATH settings. I suggest that you start simple -- just a
test Java program that tries to import the ElementTraversal class, and
build up from there until you understand the obstacle that is preventing
your app from starting.


but unfortunately i don't know to programming in java. So how can I solve
this problem?
Thank you very much for any help! :)

Best regards!
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