Parse XML Schema in Java

Hi all.
I need to parse an XML Schema and get the following information out of
it:
list of elements allowed in schema
list of attributes for each element - which are required and which
optional
given an element name get elements that it can contain
etc.
Parsing with JDOM XPath seems to be complicated, because there are
many ways to say something in schema, although it would be my
preferred way.
I also looked at JAXB and Xerces, but their APIs seem to be more
complicated than I need.
Is there a simple API for doing what I need?
Thank you very much for help.
Anna

I looked at JAXB, the problem there is that as I understand it, it first converts the schema to a bunch of
Java classes and then I need to compile them and use.
I am looking for something more straightforward, that will allow me to load the schema and do queries, but I can't find anything.
About Xerces - I can't find any good examples for querying schema, all are about validating xml
with given schema, which is not what I need. This is also true about JAXP.
I will be really glad if someone new some good links with examples of Xerces/JAXB used for
querying schema.
Hope that I don't ask for to much.
Thank you very much for help.
Anna

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Can you please help me to figure out this problem?
Edited by: Jaykishan on Jul 20, 2011 10:04 AM

earlier it was
org.xml.sax.SAXParseException: s4s-elt-character: Non-whitespace characters are not allowed in schema elements other than 'xs:appinfo' and 'xs:documentation'. Saw 'USAVER'.anmd now it is
org.xml.sax.SAXParseException: s4s-elt-character: Non-whitespace characters are not allowed in schema elements other than 'xs:appinfo' and 'xs:documentation'. Saw 'Alert1'.some problem in this Alert1 message is what i guess.. some parsing error.. look closely..
i guess some of the xml characters are not rendered properly in forum software.. or it may be truncated.. so i believe something wrong which is not visible..

Parse XML Schema in Java

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