用Java写一个带菜单的汽车管理系统

好的，下面是一个简单的汽车管理系统的Java代码，包含菜单功能，可以实现添加、查询、修改和删除汽车信息的基本操作：

import java.util.ArrayList;
import java.util.Scanner;

public class CarManagementSystem {
    private ArrayList<Car> carList = new ArrayList<>();
    private Scanner scanner = new Scanner(System.in);

    public void run() {
        while (true) {
            System.out.println("==========汽车管理系统==========");
            System.out.println("1. 添加汽车信息");
            System.out.println("2. 查询汽车信息");
            System.out.println("3. 修改汽车信息");
            System.out.println("4. 删除汽车信息");
            System.out.println("5. 退出系统");
            System.out.print("请选择操作：");

            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    addCar();
                    break;
                case 2:
                    searchCar();
                    break;
                case 3:
                    updateCar();
                    break;
                case 4:
                    deleteCar();
                    break;
                case 5:
                    System.out.println("谢谢使用！");
                    System.exit(0);
                default:
                    System.out.println("输入错误，请重新选择！");
            }
        }
    }

    private void addCar() {
        System.out.print("请输入汽车品牌：");
        String brand = scanner.next();
        System.out.print("请输入汽车型号：");
        String model = scanner.next();
        System.out.print("请输入汽车颜色：");
        String color = scanner.next();
        System.out.print("请输入汽车价格：");
        double price = scanner.nextDouble();
        Car car = new Car(brand, model, color, price);
        carList.add(car);
        System.out.println("汽车信息添加成功！");
    }

    private void searchCar() {
        System.out.print("请输入查询的汽车品牌：");
        String brand = scanner.next();
        for (Car car : carList) {
            if (car.getBrand().equals(brand)) {
                System.out.println(car);
            }
        }
    }

    private void updateCar() {
        System.out.print("请输入要修改的汽车品牌：");
        String brand = scanner.next();
        for (Car car : carList) {
            if (car.getBrand().equals(brand)) {
                System.out.print("请输入新的汽车品牌：");
                String newBrand = scanner.next();
                car.setBrand(newBrand);
                System.out.print("请输入新的汽车型号：");
                String newModel = scanner.next();
                car.setModel(newModel);
                System.out.print("请输入新的汽车颜色：");
                String newColor = scanner.next();
                car.setColor(newColor);
                System.out.print("请输入新的汽车价格：");
                double newPrice = scanner.nextDouble();
                car.setPrice(newPrice);
                System.out.println("汽车信息修改成功！");
                return;
            }
        }
        System.out.println("未找到该汽车品牌！");
    }

    private void deleteCar() {
        System.out.print("请输入要删除的汽车品牌：");
        String brand = scanner.next();
        for (int i = 0; i < carList.size(); i++) {
            if (carList.get(i).getBrand().equals(brand)) {
                carList.remove(i);
                System.out.println("汽车信息删除成功！");
                return;
            }
        }
        System.out.println("未找到该汽车品牌！");
    }

    public static void main(String[] args) {
        CarManagementSystem system = new CarManagementSystem();
        system.run();
    }
}

class Car {
    private String brand; //汽车品牌
    private String model; //汽车型号
    private String color; //汽车颜色
    private double price; //汽车价格

    public Car(String brand, String model, String color, double price) {
        this.brand = brand;
        this.model = model;
        this.color = color;
        this.price = price;
    }

    public String getBrand() {
        return brand;
    }

    public void setBrand(String brand) {
        this.brand = brand;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    @Override
    public String toString() {
        return "汽车品牌：" + brand + "，汽车型号：" + model + "，汽车颜色：" + color + "，汽车价格：" + price;
    }
}

这个程序使用了ArrayList来存储汽车信息，通过菜单功能来实现添加、查询、修改和删除汽车信息的操作。由于这只是一个简单的示例程序，实际的汽车管理系统可能会更加复杂，需要根据实际需求进行设计和开发。