Java Development Tools

We are looking for a way to save values by inserting records that was created as a part of a multi select drop down list using ADF/Struts in Jdev10G? So basically, the user select multiple items from the list and based on a unique key such as userid, we are trying to associate multiple values that was selected to the same user login and therefore save it in the same table with columns(user_login, access_code). So it could look like.

user ---- access code

tony ----- HH
James ----- GG
Fred ----- barny

Here is a small sample code,
<html:select property="DepartmentId1">
<html:optionsCollection label="prompt" value="index" property="DepartmentId1.displayData"/>
</html:select>

Thanks.