Создать коллекцию для хранения объектов типа Автомобиль

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
 
public class CollectionTask {
    CollectionTask() {
        Car car1 = new Car("Opel", 2.50, 300.0);
        Car car2 = new Car("Audi", 6.50, 120.0);
        Car car3 = new Car("BMW", 1.30, 600.0);
        List<Car> carList = new ArrayList<Car>();
        carList.add(car1);
        carList.add(car2);
        carList.add(car3);
        printer(carList);
        System.out.println();
        Collections.sort(carList, new Car(0));
        printer(carList);
        System.out.println();
        Collections.sort(carList, new Car(1));
        printer(carList);
        System.out.println();
        Collections.sort(carList, new Car(2));
        printer(carList);
        System.out.println();
    }
 
    private void printer(List<Car> carList) {
        for (Car car : carList) {
            System.out.println("Manufacturer: " + car.manufacturer
                    + ", price: " + car.price + ", weight: " + car.weight);
        }
    }
 
    public static void main(String[] args) {
        new CollectionTask();
    }
 
    private class Car implements Comparator<Object> {
        double weight;
        double price;
        String manufacturer;
        int sortType;
 
        public Car(int sortType) {
            this.sortType = sortType;
        }
 
        public Car(String manufacturer, double price, double weight) {
            this.manufacturer = manufacturer;
            this.price = price;
            this.weight = weight;
        }
 
        @Override
        public int compare(Object o1, Object o2) {
            Car car1 = (Car) o1;
            Car car2 = (Car) o2;
            if (sortType == 0) {
                return car1.manufacturer.compareTo(car2.manufacturer);
            } else if (sortType == 1) {
                return car1.price < car2.price ? 1
                        : car1.price > car2.price ? -1 : 0;
            } else if (sortType == 2) {
                return car1.weight < car2.weight ? 1
                        : car1.weight > car2.weight ? -1 : 0;
            }
            return 0;
        }
    }
}