Not sure if this is a
Servlet or a
JSP question. I have a Data Entry Screen ( JSP) , User enters Account Number and other info. Submits form and I do Javascript validation. If all the JS validation is good. I pass data to Servlet which then forwards data to a Database class to do some validation. The 1st thing it checks - does Account already exist, if not it then checks all the rows in the database to see if the Account Number exists in a SUB-Account column. Here's my question .... If the Account Number being entered already exists in the SUB-Account column, the users want to be prompted ( alert box ) with the option to continue (add record to DB ) or cancel ( not add record to DB). Also in this box they want to know what Account Number that has the SUB Account thats currently being entered as Lead Account. How do I create an alert box ? Do I create another JSP page or ? I'm new to Servlets and JSP's so hopefully this isn't to complicated. Thanks