static void Main(string[] args) { ConcreteMediator mediator = new ConcreteMediator(); ColleaguaA colleaguaA = new ColleaguaA(mediator); ColleaguaB colleaguaB = new ColleaguaB(mediator); mediator.ColleaguaA = colleaguaA; mediator.ColleaguaB = colleaguaB; colleaguaA.Notify("一起玩游戏啊!"); colleaguaB.Notify("不了,我还要学习。"); }