Modal combobox with Struts

[Leila Carvalho]

What is the best way to implement the logic of a second combobox that
depends
on the choice made in a first combobox in a JSP page, inside Struts
framework ??
For instance: if I choose EUA in the first combobox, the second combobox
must be
populated with EUA's states.  The same for countries X states etc.
Some people implement this with javascript, function onchange(). JSF uses
Events...
Thanks in advance!!
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