Attributes within a request just live in that request, so, if you are calling one of your action classes from (lets say) a
jsp, and then it gets back to another page and from that second page you call another action class, it is a different request, so the the attribute in your first request is no present in the second one, the first one just died, if you want more life time to the objects you can set the attributes in the session scope, like:
but that is not a completelly smart way