外观设计模式

java 复制代码

package com.jmj.pattern.facade;

public class Light {
    public void  on(){
        System.out.println("打开电灯...");
    }

    public void off(){
        System.out.println("关闭电灯...");
    }
}

java 复制代码

package com.jmj.pattern.facade;

public class AirCondition {
    public void  on(){
        System.out.println("打开空调...");
    }

    public void off(){
        System.out.println("关闭空调...");
    }

}

java 复制代码

package com.jmj.pattern.facade;

public class TV {
    public void  on(){
        System.out.println("打开电视机...");
    }

    public void off(){
        System.out.println("关闭电视机...");
    }

}

java 复制代码

package com.jmj.pattern.facade;

public class SmartAppliancesFacade {

    private AirCondition airCondition;
    private  Light light;
    private TV tv;

    public SmartAppliancesFacade() {

        light=new Light();
        tv=new TV();
        airCondition=new AirCondition();
    }

    public void say(String message){
        if (message.equals("打开")){
            on();
        } else if (message.equals("关闭")) {
            off();
        }
        else {
            System.out.println("我听不懂你说的！！！");
        }
    }

    private void on() {
       light.on();
        airCondition.on();
        tv.on();
    }

    private void off() {
        light.off();
        airCondition.off();
        tv.off();
    }
}

java 复制代码

package com.jmj.pattern.facade;

public class Client{
    public static void main(String[] args) {
        SmartAppliancesFacade smartAppliancesFacade = new SmartAppliancesFacade();
        smartAppliancesFacade.say("关闭");
    }
}