Different between Eventbus and Google Pub/SUb

Question

FYI, I know this question is asked here.

But I have a bit specific question.

1. What is the difference between them?
2. Can I use EventBus with Google Pub/Sub.

Answer 1

1. What is different between them ?

As we can see on documentation of Guava EventBus, it's used on the distribution of java events inside an application.

It is designed exclusively to replace traditional Java in-process event distribution using explicit registration. It is not a general-purpose publish-subscribe system...

Cloud Pub/Sub is a a general-purpose publish-subscribe with a large variety of use cases.

Documentation says:

This supports an "enterprise event bus" and event-driven application design patterns.

but it's different from what Guava's does.

2. Can I use Eventbus with Google Pub/Sub ?

Thinking of developing, I may say you can use Pub/Sub for your App intra-communication. But it's going to be different from what Guavas do and work.