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package designpattern.facade;
/**
* 外观类客户端
*
* @author liu yuning
*
*/
public class FacadeClient {
public static void main(String[] args) {
// 由于Facade的作用,客户端可以根本不知道四个子系统的存在
// 启发:维护一个遗留的大型系统时,可能这个系统已经非常难以维护和扩展了,此时可以
// 为新系统开发一个外观Facade类,来提供设计粗糙或高度复杂的遗留代码的比较清晰简单
// 的接口,让新系统与Facade对象交互,Facade与遗留代码交互所有复杂的工作
Facade facade = new Facade();
facade.methodA();
facade.methodB();
}
}
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