Xerces J Catalogs

[Balchandra Kemkar]

Hi All,
 
I am relatively new to Xerces-J, till now I was working on Xerces-C++.
Reason for trying Xerces-J is the support for catalogs.
 
I didn't understood the exact use model for using the catalogs.
 
It would be a great help if someone can give some idea on that.
 
Thanks in Advance,
Balchandra