How do I use one drop down list to refresh the list in another drop down?

Question

I am using a drop down list full of years (i.e. 2008, 2009..etc). When I make my selection from this drop down list (say for instance I select 2009) I want it to update the available data in the second drop down list. I have the query statement set up within the JSP page but it needs to be a dynamic SQL statement based off the value I selected in the first drop down.
String sql = "SELECT GameId, GameDescription FROM Games WHERE Year = " + year;
The variable "year" is the value I need to figure out how to assign. Now this variable is a Java variable (attribute) and Im unsure how to get the value from the previous drop down and assign it to that. Basically I need the JavaScript value from the first drop down assigned to the Java attribute "year".
Anyone able to help me with this???
Thanks,
Jed

Answer 1

Here are my two drop down lists. As you can see I build the second list dynamically based off the value of the year. I want to be able to assign my year to the value I select in this first drop down. How do I do that?? I only want to show games for the year I select. I currently have the year hardcoded to "2009" as you see below. How can i change that to be assigned to the JavaScript value i extract from the first select box?
<select name="season">
<option value='2009' selected>2009</option>
<option value='2008'>2008</option>
</select>
<select name="gameselect">
<%
try
String year = "2009";
String connectionURL = "jdbc:mysql://localhost:3306/ElmwoodExpos";
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection(connectionURL, "root", "thejedster");
String sql = "SELECT GameId, GameDescription FROM Games WHERE Year = " + year;
Statement s = con.createStatement();
s.executeQuery(sql);
ResultSet rs = s.getResultSet();
while(rs.next())
%>
<option value="1"><% out.print(rs.getString("GameDescription"));%></option>
<%
catch(Exception e)
%>
</select>
Thanks,
Jed