Hi Kiran,
It's very simple..
1) just submit a form to some process.jsp page....
2) get all your forms (tables) fields values on this page by using.....
String custname=request.getParameter("cname"); where cname is the name of that field.
3) write a method with update quiry on your required database table to update columns.
4) fprward control from that page to your required page by using pageContext.forward("/abcpackage/abcmodule/abcform.jsp");
with a message on top that" Record is Updated Successfully"
Good Day.
Sandeep Oza