JSP Help

[furia_bhavesh]

I need 2 fetch table data (id, branch name, email-id) into text-boxes in a JSP page which consists of a edit and cancel buttons.
The usr can change any no. of email id available in the textbox.
I have to track which email id is changed (can be more than one) while submitting the form.
The form, while submitting has to be validated with the help of a BEAN.
The table is stored in a MYSQL database
The business logic should be hidden from the user.

How to keep track of which textboxes' value is changed ?
What code should I write in a servlet and a bean ?
Where should the database connection code go ?
Everything should be edited in one page only and after clicking edit button only the msg should be displayed as "<n>no. of records updated successfully"