Java设计模式之命令模式的实战应用

// 号令接心
interface Co妹妹and {
    void execute();
}

// 详细号令：谢电视
class TurnOnCo妹妹and implements Co妹妹and {
    private Television television;

    public TurnOnCo妹妹and(Television television) {
        this.television = television;
    }

    @Override
    public void execute() {
        television.turnOn();
    }
}

// 详细呼吁：闭电视
class TurnOffCo妹妹and implements Co妹妹and {
    private Television television;

    public TurnOffCo妹妹and(Television television) {
        this.television = television;
    }

    @Override
    public void execute() {
        television.turnOff();
    }
}

// 挪用者：远控器
class RemoteControl {
    private List<Co妹妹and> co妹妹ands;

    public RemoteControl() {
        co妹妹ands = new ArrayList<>();
    }

    public void addCo妹妹and(Co妹妹and co妹妹and) {
        co妹妹ands.add(co妹妹and);
    }

    public void pressButton() {
        for (Co妹妹and co妹妹and : co妹妹ands) {
            co妹妹and.execute();
        }
    }
}

// 接管者：电视
class Television {
    public void turnOn() {
        System.out.println("电视未掀开");
    }

    public void turnOff() {
        System.out.println("电视未洞开");
    }
}

// 主办法
public class Main {
    public static void main(String[] args) {
        // 建立电视
        Television television = new Television();

        // 创立号令
        Co妹妹and turnOnCo妹妹and = new TurnOnCo妹妹and(television);
        Co妹妹and turnOffCo妹妹and = new TurnOffCo妹妹and(television);

        // 建立远控器并加添号令
        RemoteControl remoteControl = new RemoteControl();
        remoteControl.addCo妹妹and(turnOnCo妹妹and);
        remoteControl.addCo妹妹and(turnOffCo妹妹and);

        // 按高远控器的按钮
        remoteControl.pressButton();
    }
}