xml reading problem

Hi all,

I tried to read a xml file using an gwt+google app engine app. But I
am getting following exceptions

No source code is available for type
org.xml.sax.helpers.DefaultHandler; did you forget to inherit a
required module?
No source code is available for type javax.jdo.PersistenceManager; did
you forget to inherit a required module?
No source code is available for type javax.xml.parsers.SAXParser; did
you forget to inherit a required module?
No source code is available for type
javax.xml.parsers.SAXParserFactory; did you forget to inherit a
required module?
No source code is available for type java.io.File; did you forget to
inherit a required module?
No source code is available for type
javax.xml.parsers.ParserConfigurationException; did you forget to
inherit a required module?
No source code is available for type org.xml.sax.SAXException; did you
forget to inherit a required module?
No source code is available for type org.xml.sax.Attributes; did you
forget to inherit a required module?

Please someone help me.

Thank You
Aruna

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