用guava实现简单的事件驱动

import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;


public class A {
	EventBus bus;

	public void go() {
		bus.post("test");
	}

	public A(EventBus bus) {
		this.bus = bus;
	}

	public static void main(String[] args) {
		EventBus bus = new EventBus();
		B b = new B();
		bus.register(b);
		A a = new A(bus);
		a.go();
	}

}

class B {

	@Subscribe
	public void go(Object event) {
		System.out.println(event);
	}

}

执行结果：
test