david,

> I already include xml-apis-1.3.03.jar in the WAR's WEB-INF/lib-directory.

are you saying that the jar containing the said class is in your
WEB-INF/lib-directory already and you get that NullPointer?

On which OS are you running? Is it possible, that you have set an
environment-variable like JAVA_ENDORSED? This overwrites the default
XML-handling

In your logs, is there a root-cause for that exception you posted?

If all that doesn't give you a clue, start Tomcat in JPDA-mode,
connect remotely with your Eclipse-debugger and set a breakpoint at

com.myorg.myapp.ws.notification.impl.BufferedSubscriptionManager.publish(BufferedSubscriptionManager.java:73)

Then check the variables which are null but ought to be set, maybe
that gives you a figure.

HTH

Gregor
--
what's puzzlin' you, is the nature of my game
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