Java or C++ for something simple as this? I think not.
Simple HTML and PHP would only take a few minutes to build this. I have no idea what it is you have to build, but if you just put the data in a SQL database and group all things (I guess data is processed in groups or something?) and use the dropdown menu as a HTML form which posts the selection to a PHP file, that file can then handle the input and show all records from the database.
Or something in that direction.