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java设计模式_中介者模式
/**
* @Title: Country.java
* @Package com.wangbiao.design.mediator
* @Description: TODO
* @author wangbiao
* @date 2014-9-24 下午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 下午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("中国收到消息 ： "+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("美国收到消息 ： "+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 下午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;
}
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: Client.java
* @Package com.wangbiao.design.mediator
* @Description: TODO
* @author wangbiao
* @date 2014-9-24 下午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 下午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("为什么你每年的军费这么多?");
country1.declare("管你屁事");
}
}
java设计模式_中介者模式
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