how to set file watcher

I want to know how to set file watcher for my sql database using java.

my doubt is i am running an web application in a web server.

the user information are stored one databse.

i want that user details in other databases.

it will do automatically.

when ever new values are stored one database then automatically that value transfered in other data base.

i want urgent.

please help me

thanks

[445 byte] By [kathir226a] at [2007-10-2 8:41:39]