Hibernate ... how do you read and write the file with data persistence.xml screen jsp


Hello,

how can I do to read and write the file persistence.xml
because I have a screen as below and I will set the xml through this screen ...

Someone has been there I would like to know how .... example if someone had
or a url for search, would



abs





[code]

JSP page
==========

Configuration
============
User:
Password:
Bank URL:
Drive:

[/ code]