XML schema model - Java implementations

[RameshNethi <ramesh.nethi@sonoasystems.com>]

Hi,

Is there a Java standard API for accessing XML schema model ? That is, parse 
an XSD and query/modify schema information

I came across the following in quick google search, but both of these appear 
to be custom APIs.

https://xsom.dev.java.net/
http://ws.apache.org/jaxme/xs/


Thanks
Ramesh