I think I have it...and I wanted to make sure I got this archived
somewhere in case I or anyone else was ever looking for an example.
The first list is a list of Course objects, made up of an id, name and
Foods (a Set of Food objects)
Food has an id and a name field.
List<Course> listCourse = new ArrayList<Course>(); // make sure you
have a getter for this
Course c1 = new Course(1, "Appetizer");
Food f1 = new Food("1", "Cheese Stick");
Food f2 = new Food("2", "Nachos");
Set<Food> setFood1 = new HashSet<Food>();
setFood1.add(f1);
setFood1.add(f2);
c1.setFoods(setFood1);
Course c2 = new Course(2, "Main Course");
Food f1 = new Food("3", "Chicken Sandwich");
Food f2 = new Food("4", "Veggie Wrap");
Set<Food> setFood2 = new HashSet<Food>();
setFood2.add(f3);
setFood2.add(f4);
c2.setFoods(setFood2);
etc etc ad nauseum
and in the JSP then:
<s:doubleselect label="Meal"
name="course" list="listCourse" listKey="id" listValue="name"
doubleName="food" doubleList="foods"
doubleListKey="id" doubleListValue="name" />
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