外观模式 #

public class Facade Pattern
{
    public static void main(String[] args) {
        //实例化电器类
        SubSystemA_Light light = new SubSystemA_Light();
        SubSystemB_Television television = new SubSystemB_Television();
        SubSystemC_Aircondition aircondition = new SubSystemC_Aircondition();

        //传参
        Facade facade = new Facade(light,television,aircondition);

        //客户端直接与外观对象进行交互
        facade.on;
        System.out.prinln("可以看电视了")；
        facade.off;
        System.out.prinln("可以睡觉了")；
    }
}