//a simple java program to print out some of the behaviours of a Droid...

public class Droid{

  int batteryLevel;

  public Droid(){

  batteryLevel = 100;

  }

  public void activate(){
    System.out.println("Activated...How can I help you Dan?");
    batteryLevel -= 5;

    System.out.println("Battery level is: " + batteryLevel + " percent.");
  }

  public void chargeBattery(int hours){
    System.out.println("Droid charging......");
    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(double feet){
    if(feet >2){
      System.out.println("Error! I cannot hover above 2 feet.");
    }
    else{
      System.out.println("Hovering........");
    }

    batteryLevel -= 20;
    System.out.println("Battery level is: " + batteryLevel + "percent.");

  }

  public static void main(String[] args){
    Droid myDroid = new Droid();
    myDroid.activate();
    myDroid.chargeBattery(5);
    myDroid.hover(2.1);
    myDroid.checkBatteryLevel();
  }
}