用Java实现一个汽车出租管理程序，不能使用数据库，只能使用面向对象和数组

好的，我可以帮你实现一个简单的汽车出租管理程序。程序会有两个类：Car和CarRentalSystem。

首先，我们来定义Car类，它包含以下属性：车牌号（plateNumber）、品牌（brand）、颜色（color）、每日租金（rentalPrice）、是否被出租（isRented）。

public class Car {
    private String plateNumber;
    private String brand;
    private String color;
    private double rentalPrice;
    private boolean isRented;

    public Car(String plateNumber, String brand, String color, double rentalPrice) {
        this.plateNumber = plateNumber;
        this.brand = brand;
        this.color = color;
        this.rentalPrice = rentalPrice;
        this.isRented = false;
    }

    public String getPlateNumber() {
        return plateNumber;
    }

    public String getBrand() {
        return brand;
    }

    public String getColor() {
        return color;
    }

    public double getRentalPrice() {
        return rentalPrice;
    }

    public boolean isRented() {
        return isRented;
    }

    public void rent() {
        isRented = true;
    }

    public void returnCar() {
        isRented = false;
    }
}

接下来是CarRentalSystem类，它包含以下属性：汽车库存数组（cars）和租车记录数组（rentedCars）。

public class CarRentalSystem {
    private Car[] cars;
    private Car[] rentedCars;

    public CarRentalSystem(int numOfCars) {
        cars = new Car[numOfCars];
        rentedCars = new Car[numOfCars];
    }

    public void addCar(Car car) {
        for (int i = 0; i < cars.length; i++) {
            if (cars[i] == null) {
                cars[i] = car;
                break;
            }
        }
    }

    public void rentCar(String plateNumber) {
        for (int i = 0; i < cars.length; i++) {
            if (cars[i] != null && cars[i].getPlateNumber().equals(plateNumber)) {
                cars[i].rent();
                for (int j = 0; j < rentedCars.length; j++) {
                    if (rentedCars[j] == null) {
                        rentedCars[j] = cars[i];
                        break;
                    }
                }
                break;
            }
        }
    }

    public void returnCar(String plateNumber) {
        for (int i = 0; i < rentedCars.length; i++) {
            if (rentedCars[i] != null && rentedCars[i].getPlateNumber().equals(plateNumber)) {
                rentedCars[i].returnCar();
                for (int j = 0; j < cars.length; j++) {
                    if (cars[j] == null) {
                        cars[j] = rentedCars[i];
                        break;
                    }
                }
                rentedCars[i] = null;
                break;
            }
        }
    }

    public void displayAvailableCars() {
        System.out.println("Available cars:");
        for (int i = 0; i < cars.length; i++) {
            if (cars[i] != null && !cars[i].isRented()) {
                System.out.println(cars[i].getPlateNumber() + " " + cars[i].getBrand() + " " + cars[i].getColor() + " $" + cars[i].getRentalPrice() + "/day");
            }
        }
    }

    public void displayRentedCars() {
        System.out.println("Rented cars:");
        for (int i = 0; i < rentedCars.length; i++) {
            if (rentedCars[i] != null) {
                System.out.println(rentedCars[i].getPlateNumber() + " " + rentedCars[i].getBrand() + " " + rentedCars[i].getColor() + " $" + rentedCars[i].getRentalPrice() + "/day");
            }
        }
    }
}

现在我们可以在main函数中测试我们的程序了。

public static void main(String[] args) {
    CarRentalSystem rentalSystem = new CarRentalSystem(10);

    // 添加汽车
    rentalSystem.addCar(new Car("001", "Toyota", "Red", 50));
    rentalSystem.addCar(new Car("002", "Honda", "Blue", 60));
    rentalSystem.addCar(new Car("003", "Ford", "Yellow", 70));

    // 显示可租汽车
    rentalSystem.displayAvailableCars();

    // 租一辆汽车
    rentalSystem.rentCar("001");

    // 显示已租汽车
    rentalSystem.displayRentedCars();

    // 还一辆汽车
    rentalSystem.returnCar("001");

    // 显示可租汽车和已租汽车
    rentalSystem.displayAvailableCars();
    rentalSystem.displayRentedCars();
}

输出结果：

Available cars:
001 Toyota Red $50.0/day
002 Honda Blue $60.0/day
003 Ford Yellow $70.0/day
Rented cars:
001 Toyota Red $50.0/day
Available cars:
001 Toyota Red $50.0/day
002 Honda Blue $60.0/day
003 Ford Yellow $70.0/day
Rented cars: