OOP) Drone

public class Droid {

    int batteryLevel;

    public Droid () {
        batteryLevel= 100;
    }

    public void activate(){
        System.out.println("ACTIVATED. how can i help you?");
        batteryLevel = batteryLevel - 5;
        System.out.println("Battery level is " + batteryLevel + " percent.");
    }

    public void chargeBattery (int hours){
        System.out.println("Droid charging....");
        batteryLevel = batteryLevel + hours ;
        if (batteryLevel > 100){
            batteryLevel = 100 ;
            System.out.println("Battery level is " + batteryLevel + " percent.");
        } else {
            System.out.println("Battery level is " + batteryLevel + " percent.");
        }
    }

    public int checkBatteryLevel(){
        System.out.println("Battery level is " + batteryLevel + " percent.");
        return batteryLevel;
    }

    public void hover (int meters){
        if (meters>2){
            System.out.println("Error, cannot hover above 2 meters.");
        } else{
            System.out.println("Hovering.....");
            batteryLevel = batteryLevel - 20;
            System.out.println("Battery level is " + batteryLevel + " percent.");
        }
    }
    public static void main(String[] args) {
        Droid R2D2 = new Droid();

        R2D2.activate();
        R2D2.chargeBattery(5);
        R2D2.hover(2);
    }
}