Java – Subscribe to different event buses of the same class

I’m using GreenRobot Event Bus 3.0 as an event bus and I have 2 publishers:

 private static final EventBus EVENT_BUS = new EventBus();

Publish event to the event bus
public static void sendEvent(LoggingEvent event){
    LogPublisher.EVENT_BUS.post(event);
}

Publish event to the event bus
public static void sendEvent(OtherLoggingEvent event){
    LogPublisher.EVENT_BUS.post(event);
}

I have 2 subscribers:

 @Subscribe(threadMode = ThreadMode.ASYNC)
    public void onEvent(LoggingEvent event){
        logEvent( event);
    }

@Subscribe(threadMode = ThreadMode.ASYNC)
    public void onEvent(OtherLoggingEvent event){
        logEvent( event);
    }

The question is when to call :

MyPublisher.sendEvent(new OtherLoggingEvent(varA, varB, varC));

Both subscribers were called, I don’t understand why. I think this might have something to do with the fact that OtherLoggingEvent is a subclass of LoggingEvent, but I’m not sure. Then my question becomes how to maintain a 1-1 relationship with publishers and subscribers. I want to call:

MyPublisher.sendEvent(new OtherLoggingEvent(varA, varB, varC));

And let the subscriber public void onEvent (OtherLoggingEvent event) call, when I call:

MyPublisher.sendEvent(new LoggingEvent(varD, varE, varF));

Subscribers:

 public void onEvent(LoggingEvent event)

Will it be called? This would work as-is, but must the classes be unique and not subclasses of each other? Do I have to create a new EventBus object?

Because of event class inheritance, both subscribers are called. However, you can turn off this eventInheritance feature in the EventBus itself. By using this method:

EventBus BUS = EventBus.builder().eventInheritance(false).installDefaultEventBus();