Guava EventBus dispatching

Question

I\'m using Guava\'s EventBus to kick off some processing and report results. Here\'s a very simple compilable example:

import com.google.common.eventbus.EventBu         


        

Answer 1

While posting to the EventBus does not return until all "subscribers" have been signaled .. those subscribers might NOT have begun execution. That means that when the first bus.post returns, you continue the next post without any intervening subscriber having begun to process.

public void post(Object event) Posts an event to all registered subscribers. This method will return successfully after the event has been posted to all subscribers, and regardless of any exceptions thrown by subscribers. If no subscribers have been subscribed for event's class, and event is not already a DeadEvent, it will be wrapped in a DeadEvent and reposted.

Parameters: event - event to post.