Was sind die Anwendungsszenarien des Befehlsmodus im Java-Framework?

interface Command {
    void execute();
}

class LightOnCommand implements Command {
    private final Light light;

    public LightOnCommand(Light light) {
        this.light = light;
    }

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

class LightOffCommand implements Command {
    private final Light light;

    public LightOffCommand(Light light) {
        this.light = light;
    }

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

class Light {
    public void turnOn() {
        System.out.println("Light turned on.");
    }

    public void turnOff() {
        System.out.println("Light turned off.");
    }
}

class RemoteControl {
    private final Command[] onCommands;
    private final Command[] offCommands;

    public RemoteControl() {
        onCommands = new Command[7];
        offCommands = new Command[7];

        Command noCommand = new NoCommand();
        for (int i = 0; i < 7; i++) {
            onCommands[i] = noCommand;
            offCommands[i] = noCommand;
        }
    }

    public void setCommand(int slot, Command onCommand, Command offCommand) {
        onCommands[slot] = onCommand;
        offCommands[slot] = offCommand;
    }

    public void onButtonWasPressed(int slot) {
        onCommands[slot].execute();
    }

    public void offButtonWasPressed(int slot) {
        offCommands[slot].execute();
    }

    private class NoCommand implements Command {
        @Override
        public void execute() {}
    }
}

public class CommandPatternDemo {
    public static void main(String[] args) {
        RemoteControl remoteControl = new RemoteControl();

        Light livingRoomLight = new Light();
        Light kitchenLight = new Light();

        LightOnCommand livingRoomLightOnCommand = new LightOnCommand(livingRoomLight);
        LightOffCommand livingRoomLightOffCommand = new LightOffCommand(livingRoomLight);
        LightOnCommand kitchenLightOnCommand = new LightOnCommand(kitchenLight);
        LightOffCommand kitchenLightOffCommand = new LightOffCommand(kitchenLight);

        remoteControl.setCommand(0, livingRoomLightOnCommand, livingRoomLightOffCommand);
        remoteControl.setCommand(1, kitchenLightOnCommand, kitchenLightOffCommand);

        remoteControl.onButtonWasPressed(0);
        remoteControl.offButtonWasPressed(0);
        remoteControl.onButtonWasPressed(1);
        remoteControl.offButtonWasPressed(1);
    }
}