akka 如何等待 子线程结束

Question

Akka.system().scheduler().scheduleOnce(Duration.create(1, TimeUnit.MILLISECONDS), new Runnable()
		{
			@Override
			public void run()
			{
				u.put("time", System.currentTimeMillis() % 300000);
				u.putModel("achieve", achieveDao.findFirstByWhere(" where user_id=? ", u.getId()));
				u.putModel("achieve_days", achieveDaysDao.findFirstByWhere("where user_id=?", u.getId()));
				u.putModel("achieve_week", achieveWeekDao.findFirstByWhere("where user_id=?", u.getId()));
				u.putModel("item", Db.find(sql("jump.item.getUserItem"), u.getId()));
				u.putModel("props", Db.find(sql("jump.props.getUserProps"), u.getId()));
				u.putModel("amulet", amuletDao.list("where user_id=?", u.getId()));
				u.putModel("msg_list", msgDao.list(u.getId()));
				u.putModel("sale_list", saleDao.list());
				setRoleEquip(u.getId(), u, false);
				boolean get_award = Db.findById(Consts.Table.USER_LOGIN_AWARD, "uid", u.getId()) == null ? true : false;
				if (get_award) u.putModel("login_award_list", loginAwardDao.list());
				u.putModel("notice_list", msgDao.notice());
			
			}
		}, Akka.system().dispatcher());
		
		
		u.putModel("mission_list", missionDao.list(u.getId()));
	
		while(u.get("notice_list")==null)Thread.sleep(100);

这句感觉不太好  akka 要怎么写来着 没用过

while(u.get("notice_list")==null)Thread.sleep(100);

Answer 1

Akka.system.scheduler.scheduleOnce(1.second) {
      Future {
        Logger.debug("I'm in a Future~~!")
        Logger.debug(s"this message is print by akka schedulerOnce: ${System.currentTimeMillis()}")
      }.onComplete(x => Logger.debug("Finished Future"))
    }