I wrote like others but could not verify last condition
package com.codegym.task.task29.task2909.car;
import java.util.Date;
public abstract class Car {
static public final int TRUCK = 0;
static public final int SEDAN = 1;
static public final int CABRIOLET = 2;
static final int MAX_TRUCK_SPEED = 80;
static final int MAX_SEDAN_SPEED = 120;
static final int MAX_CABRIOLET_SPEED = 90;
double fuel;
public double summerFuelConsumption;
public double winterFuelConsumption;
public double winterWarmingUp;
private int type;
private boolean driverAvailable;
private int numberOfPassengers;
public boolean isSummer(Date date, Date summerStart, Date summerEnd) {
return !date.before(summerStart) && !date.after(summerEnd);
}
private boolean canPassengersBeCarried() {
if (isDriverAvailable() && fuel != 0) {
return true;
} else {
return false;
}
}
public double getWinterConsumption(int length) {
return length * winterFuelConsumption + winterWarmingUp;
}
public double getSummerConsumption(int length) {
return length * summerFuelConsumption;
}
protected Car(int type, int numberOfPassengers) {
this.type = type;
this.numberOfPassengers = numberOfPassengers;
}
protected Car(int numberOfPassengers) {
this.numberOfPassengers = numberOfPassengers;
}
public void fill(double numberOfGallons) throws Exception {
if (numberOfGallons < 0)
throw new Exception();
fuel += numberOfGallons;
}
public static Car create(int type, int numberOfPassengers) {
if (type == TRUCK)
return new Truck(numberOfPassengers);
else if (type == SEDAN)
return new Sedan(numberOfPassengers);
else if (type == CABRIOLET)
return new Cabriolet(numberOfPassengers);
return null;
}
public double getTripConsumption(Date date, int length, Date summerStart, Date summerEnd) {
double consumption;
if (!isSummer(date, summerStart, summerEnd)) {
consumption = getWinterConsumption(length);
} else {
consumption = getSummerConsumption(length);
}
return consumption;
}
public int getNumberOfPassengersThatCanBeCarried() {
if (!canPassengersBeCarried())
return 0;
else
return numberOfPassengers;
}
public boolean isDriverAvailable() {
return driverAvailable;
}
public void setDriverAvailable(boolean driverAvailable) {
this.driverAvailable = driverAvailable;
}
public void startMoving() {
if (numberOfPassengers > 0) {
fastenPassengerBelts();
}
fastenDriverBelt();
}
public void fastenPassengerBelts() {
}
public void fastenDriverBelt() {
}
public abstract int getMaxSpeed();
}