If the second dropdown gets data from the db, you'll probably still want to use javascript. Your first drop down would have an onchange event. In the event handler, you'll have to submit the form with document.forms[0].submit() Process the request and populate the bean that will be used to display the options for the second dropdown.
Here's a
tutorial that shows how to use the
Struts select/options tags.
Iliganon. I studied in USC Talamban for a year though.