Activity display dynamically depend on the locale on Struts

i want to display activities dynamically which can be increase or decrease on struts 2 and that depend on the Locale (like English or French) .
dynamically means user can be expend or collapse (add or delete) activity at run time.

I have two properties file:

messages.properties:
activity.name=activity

messages_fr.properties:
activity.name=activity_fr

for dynamic, i am using array list. i have an array list in a Java class. In this list i want to store the values (activities) depending on the locale:
arraylist.add(new ListItem("Activity", "<s:text name="activity.name"/>"));

When I retrieve the value on jsp like this:
<s:text name="activity.name"/>

Am i going to right direction or any suggestion..

Thanks