package designpattern.facade;

/**

* “系统”接口，只是标记接口，暂无任何意义

*

* @author liu yuning

*

*/

public interface SystemInterface {

}

class SubSystemOne implements SystemInterface {

public void methodOne() {

System.out.println("子系统方法一");

}

}

class SubSystemTwo implements SystemInterface {

public void methodTwo() {

System.out.println("子系统方法二");

}

}

class SubSystemThree implements SystemInterface {

public void methodThree() {

System.out.println("子系统方法三");

}

}

class SubSystemFour implements SystemInterface {

public void methodFour() {

System.out.println("子系统方法四");

}

}