I have a jsp which as customer names in a select box. Now when a customer selects any of the customer names, his app details will be populated in another box using his cust id. Now in the first select box i have customer name, so how do i fetch records from mysql in servlet using the customer name. is it that first i need to fetch customer id based on selection and then populate the app id. Also i want to know how to tell ajax that this is the customer i have selected.