public class TestEvent {

    private final int message;

    public TestEvent(int message) {

        this.message = message;

        System.out.println("event message:"+message);

    }

    public int getMessage() {

        return message;

    }

}

import com.google.common.eventbus.Subscribe;

public class EventListener {

    public int lastMessage = 0;

    @Subscribe

    public void listen(TestEvent event) {

        lastMessage = event.getMessage();

        System.out.println("Message:"+lastMessage);

    }

    public int getLastMessage() {

        return lastMessage;

    }

}

import com.google.common.eventbus.EventBus;

public class TestEventBus {

    public static void main(String[] args) throws Exception {

        EventBus eventBus = new EventBus("test");

        EventListener listener = new EventListener();

        eventBus.register(listener);

        eventBus.post(new TestEvent(200));

        eventBus.post(new TestEvent(300));

        eventBus.post(new TestEvent(400));

        System.out.println("LastMessage:"+listener.getLastMessage());

        ;

    }

}

event message:200

Message:200

event message:300

Message:300

event message:400

Message:400

LastMessage:400