设计模式——中介者模式(代码基本参考自《大话设计模式》)

public abstract class Colleague {
	protected Mediator mediator;
	
	public Colleague(Mediator mediator) {
		this.mediator = mediator;
	}
}

public abstract class Mediator {
	public abstract void send(String message,Colleague colleague);
}

public class ConcreteColleague1 extends Colleague{

	public ConcreteColleague1(Mediator mediator) {
		super(mediator);
	}
	
	public void send(String message) {
		mediator.send(message, this);
	}
	
	public void notifys(String message) {
		System.out.println("同事1得到消息："+message);
	}

}

public class ConcreteColleague2 extends Colleague{
	
	public ConcreteColleague2(Mediator mediator) {
		super(mediator);
	}

	public void send(String message) {
		mediator.send(message, this);
	}
	
	public void notifys(String message) {
		System.out.println("同事2得到消息："+message);
	}
	
}

public class ConcreteMediator extends Mediator{
	ConcreteColleague1 colleague1;
	ConcreteColleague2 colleague2;
	
	@Override
	public void send(String message, Colleague colleague) {
		if(colleague == colleague1) {
			colleague2.notifys(message);
		}else {
			colleague1.notifys(message);
		}
		
	}
	public ConcreteColleague1 getColleague1() {
		return colleague1;
	}

	public void setColleague1(ConcreteColleague1 colleague1) {
		this.colleague1 = colleague1;
	}

	public ConcreteColleague2 getColleague2() {
		return colleague2;
	}

	public void setColleague2(ConcreteColleague2 colleague2) {
		this.colleague2 = colleague2;
	}

}