> PredicatedList would just take a Predicate in its constructor, and
> anytime someone adds an element it throws an exception if the
> predicate's evalute method returns false on the element. Then when
> TypedList extends PredicatedList it becomes a very small class that
> simply constructs a TypeCheckPredicate and passes it to its superclass.
I wouldn't even have a subclass for TypedList; I'd just put a static
convience method in the TypeCheckPredicate class:
static List getTypeCheckedList(List list, Class type)
{
return new PredicateList(list, new TypeCheckPredicate(type));
}
-Paul
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