CarTree.java

public class CarTree extends BinarySearchTree<Car>{

    public void addCar(Car car) {
        this.add(car);
    }

    public void inputCar() {
        boolean repeated;
        Car car = new Car();
        do {
            String numberPlate = Helper.getStringAlphaNum("Matícula: ").toUpperCase();
            car.setNumberPlate(numberPlate);
            if (search(car) != null) {
                repeated = true;
                System.err.println("La matrícula está repetida, ingrese otra");
            }
            else repeated = false;
        }while (repeated != false);

        String brand = Helper.getString("Marca");
        String version = Helper.getString("Versión: ");
        Integer year = Helper.getYear("Año: ");

        car.setBrand(brand);
        car.setVersion(version);
        car.setYear(year);

        addCar(car);
        System.out.println("Automóvil agregado");
    }

    public void generate() {
        Integer count = Helper.getPositiveInt("Cuántos registros quiere generar? ");
        for(int i = 0; i< count; i++) {
            Car randomCar = TestData.generateCar();
            this.add(randomCar);
        }
        System.out.println("Automóviles generados: " + count);
        this.InOrder();
    }

    public Car searchByNumberPlate() {
        String numberPlateSearch = Helper.getStringAlphaNum("Matícula: ").toUpperCase();
        Car carResult = (Car) this.search(new Car(numberPlateSearch,null,null,null));
        if (carResult == null) {
            System.out.println("No hay resultado para la matrícula " + numberPlateSearch);
        }
        else {
            System.out.println(carResult.toString());
        }
        return carResult;
    }

    public Car removeByNumberPlate() {
        Car carToDelete = this.searchByNumberPlate();
        if (carToDelete != null) {
            if (Helper.yesOrNo("Eliminar? S/N") == 'S') {
                this.remove(carToDelete);
                System.out.println("Automóvil eliminado");
            }
        }
        else {
            System.out.println("No existe registro de ese automóvil");
        }
        return carToDelete;
    }
}