Java如何实现汽车租赁系统

汽车租赁：

分为客车和轿车两种：

客车小于20座：500一天，大于20座：900一天。

轿车分为豪华和普通：豪华600一天，普通200一天。

效果图：

代码如下：

机动车类：

package busTest;

/*
机动车类
 */
public abstract  class MotoVehicle {
    private String carNumber; //车牌号
    private String carBrand;  // 车品牌

    //构造方法
    public MotoVehicle(){}
    public MotoVehicle(String carNumber, String carBrand) {
        this.carNumber = carNumber;
        this.carBrand = carBrand;
    }


    // get/set
    public String getCarNumber(){
        return carNumber;
    }
    public void setCarNumber(String carNumber){
        this.carNumber = carNumber;
    }

    public String getCarBrand(){
        return carBrand;
    }
    public void setCarBrand(String carBrand){
        this.carNumber = carNumber;
    }

    /*
    计算租赁的方法
     */
    public abstract int calRent(int days);




}

客车类：

package busTest;

public class Bus extends MotoVehicle {

    private int setCount;  //座位数


    //通过构造方法初始化对象
    public Bus(String carNUmber, String brand, int setCount) {
        super(carNUmber, brand);
        this.setCount = setCount;
    }


    @Override
    public int calRent(int days) {
        //根据座位数量来判断租赁的金额
        if (this.setCount < 20) {
            return days * 500;
        } else {
            return days * 900;
        }
    }

    public void showBusInfo(int days) {
        System.out.println("*");
        System.out.println("\t车牌号:" + super.getCarNumber());
        System.out.println("\t车品牌:" + super.getCarBrand());
        System.out.println("\t座位数:" + this.setCount);
        System.out.println("\t租赁天数:" + days);
        System.out.println("\t金额:" + calRent(days));


    }
}

轿车类：

package busTest;

public class Car extends MotoVehicle {

    private String type;  //汽车类型  普通/豪华


    //通过构造方法初始化对象
    public Car(String carNUmber, String brand, String type) {
        super(carNUmber, brand);
        this.type = type;
    }


    @Override
    public int calRent(int days) {
        //根据类型来决定价格
        if ("豪车".equals(type)) {
            return days * 600;
        } else {
            return days * 200;
        }
    }

    public void showCarInfo(int days) {
        System.out.println("*");
        System.out.println("\t车牌号:" + super.getCarNumber());
        System.out.println("\t车品牌:" + super.getCarBrand());
        System.out.println("\t车类型:" + this.type);
        System.out.println("\t租赁天数:" + days);
        System.out.println("\t金额:" + calRent(days));


    }
}

租车顾客类：

package busTest;

/*
顾客类
 */

import java.util.Scanner;

public class Customer {

    private String name;
    private int sum = 0;

    //当不确定我的购物车内具体是轿车还是客车，那就以父亲类类型创建对象数组
    MotoVehicle[] motos = new MotoVehicle[10];


    Scanner input = new Scanner(System.in);

    public void showMenu() {
        //定义一个父类机动车的对象，在下面可以接收
        MotoVehicle moto = null;

        System.out.println("******汽车租赁系统*******");
        String answer;
        do {
            System.out.println("1、租赁客车  2、租赁轿车");
            System.out.print("请输入编号：");
            int num = input.nextInt();
            if (num == 1) {
                //创建租赁的客车对象
                moto = rentBus();
            } else if (num == 2) {
                //创建租赁的轿车对象
                moto = rentCar();
            }
            for (int i = 0; i < motos.length; i++) {
                if (motos[i] == null) {
                    motos[i] = moto;
                    break;
                }
            }
            System.out.print("是否继续租赁？：y/n");
            answer = input.next();
        } while (!"n".equals(answer));
        System.out.print("请输入你的姓名：");
        this.name = input.next();
        System.out.print("租赁的天数：");
        int days = input.nextInt();

        //根据天数来统计租赁金额
        calTotalRent(days);

        //显示租赁的信息
        showInfo(days);

    }

    private void showInfo(int days) {

        System.out.println("---------------------租赁汽车信息---------------------");
        for (int i = 0; i < motos.length; i++) {
            MotoVehicle moto = this.motos[i];
            if (moto != null) {
                if (moto instanceof Bus) {
                    Bus bus = (Bus) moto;
                    bus.showBusInfo(days);
                } else if (moto instanceof Car) {
                    Car car = (Car) moto;
                    car.showCarInfo(days);
                }

            }
        }

        System.out.println("\t顾客：" + this.name + "\t\t总金额：" + sum);
        System.out.println("----------------------------------------------------");
    }

    private void calTotalRent(int days) {

        int total = 0;
        for (MotoVehicle moto : motos) {
            if (moto != null) {
                int rent = moto.calRent(days);
                total += rent;  //累加总金额
            }
            this.sum = total;// 把总金额复制给全局变量 sum

        }
    }


    //轿车
    private MotoVehicle rentCar() {
        System.out.print("请输入轿车品牌：");
        String brand = input.next();
        System.out.print("请输入轿车车牌号：");
        String carNumber = input.next();
        System.out.print("请选择轿车类型[1、豪车 2、普通车：]");
        int choise = input.nextInt();
        String type;
        if (choise == 1) {
            type = "豪车";
        } else {
            type = "普通型";
        }
        return new Car(carNumber, brand, type);
    }


    //客车
    private MotoVehicle rentBus() {
        System.out.print("请输入客车品牌：");
        String brand = input.next();
        System.out.print("请输入客车车牌号：");
        String carNumber = input.next();
        System.out.print("请输入客车座位数：");
        int seatCount = input.nextInt();

        return new Bus(carNumber, brand, seatCount);
    }
}

测试类：

package busTest;

public class TestMain {
    public static void main(String[] args) {

        Customer customer = new Customer();
        customer.showMenu();
    }
}

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