Java Design Pattern _ Broker Mode

/** *  @Title: country.java *  @Package  com.wangbiao.design.mediator * @ description: todo  *  @author  wangbiao    *  @date   2014-9-24  pm 12:02:02  *  @version  V1.0 */package  com.wangbiao.design.mediator;/** *  @Title: country.java *  @Package   com.wangbiao.design.mediator *  @Description: todo  *  @author  wangbiao     *  @date  2014-9-24  afternoon 12:02:02  *  @version  v1.0 */ Public abstract class country {    public unitednationsmediator  mediator;        public country ()  {         // TODO Auto-generated constructor stub     }        public  Country (Unitednationsmediator mediator)  {         this.mediator = mediator;    }         Public abstract void declare (string message);     public abstract  void getmessage (string message);    }class china extends  Country{        public china (Unitednationsmediator mediator)  {        super (mediator);    }          @Override     public void getmessage (String  message)  {        SYSTEM.OUT.PRINTLN ("China receives message  : " + Message);    }     @Override     public void  declare (String message)  {        mediator.declare (message, this);     }    }class USA extends Country{         public usa (Unitednationsmediator mediator)  {         super (mediator);    }     @Override      public void getmessage (string message)  {         SYSTEM.OUT.PRINTLN ("The United States received the message  : " +message);     }    @ Override    public void declare (string message)  {         mediator.declare (message, this);    }     }package com.wangbiao.design.mediator;/** *  *  @Title:  unitednationsmediator.java *  @Package com.wangbiao.design.mediator *  @Description: todo  *  @author   wangbiao    *  @date  2014-9-24  pm 01:57:02  *  @version   V1.0 */public abstract class unitednationsmediator {    public  abstract void declare (string message,country country);     }class  UnitedNationSecurityCouncil extends UnitedNationsMediator{         private China china;    private USA usa;         public china getchina ()  {         return china;    }    public void setchina ( China china)  {        this.china = china;     } &nbsP;  public usa getusa ()  {        return  Usa;    }    public void setusa (USA usa)  {         this.usa = usa;    }      @Override     public void declare (string message, country  Country)  {                 if  (Country instanceof china)  {             usa.getmessage (message);         }else {             china.getmessage (message);         }            } }/** *  @Title: &NBsp client.java *  @Package  com.wangbiao.design.mediator *  @Description: todo   *  @author  wangbiao    *  @date  2014-9-24  pm 01:56:55   *  @version  V1.0 */package com.wangbiao.design.mediator;/** *  @Title:  client.java *  @Package  com.wangbiao.design.mediator *  @Description: todo   *  @author  wangbiao    *  @date  2014-9-24  pm 01:56:55   *  @version  V1.0 */public class Client {    /**      *  @param  args     */    public  static void main (String[] args)  {                 unitednationsecuritycouncil mediator = new  unitednationsecuritycOuncil ();                 china  country1 = new china (mediator);        usa  Country2 = new usa (mediator);                 mediator.setchina (Country1);         Mediator.setusa (Country2);                 country2.declare ("Why do you have so much spending every year?");         country1.declare ("Your fart");     }}

Java Design Pattern _ Broker Mode