java设计模式之中介者模式

package com.roc.mediator;
/**
 * 抽象中介者类
 * @author liaowp
 *
 */
public abstract class Mediator {

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

package com.roc.mediator;

public class ConcreteMediator extends Mediator{

    private Colleague1 colleague1;
    private Colleague2 colleague2;
    
    public void setColleague1(Colleague1 colleague1) {
        this.colleague1 = colleague1;
    }
    public void setColleague2(Colleague2 colleague2) {
        this.colleague2 = colleague2;
    }

    public void send(String message, Colleague colleague) {
        if (colleague == colleague1) {
            colleague2.Notify(message);
        }else{
            colleague1.Notify(message);
        }
        
        
    }
}

package com.roc.mediator;
/**
 * 抽象同事类
 * @author liaowp
 *
 */
public abstract class Colleague {

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

package com.roc.mediator;

public class Colleague1 extends Colleague{

    public Colleague1(Mediator mediator) {
        super(mediator);
    }

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

package com.roc.mediator;

public class Colleague2 extends Colleague{

    public Colleague2(Mediator mediator) {
        super(mediator);
    }

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

package com.roc.mediator;
/**
 * 中介者模式
 * @author liaowp
 *
 */
public class Client {
    
    public static void main(String[] args) {
        ConcreteMediator mediator=new ConcreteMediator();
        Colleague1 colleague1=new Colleague1(mediator);
        Colleague2 colleague2=new Colleague2(mediator);
        mediator.setColleague1(colleague1);
        mediator.setColleague2(colleague2);
        colleague1.send("最近还好吗？");
        colleague2.send("还不错");
    }
    
}