java 租车系统 java租车系统策划书

Java租车系统

根据所学知识，编写一个控制台版的“答答租车系统”
功能：
1、展示所有可租车辆
2、选择车型、租车量
3、展示租车清单，包含：总金额、总载货量及其车型、总载人量及其车型

设计思路：

新建三个类分别表示客车，轿车，卡车。（当然也可以先定义一个车类作为父类，然后使用继承。）

基本的变量有租金，车名，序号，载货量，载客量，库存等。

根据实际需求设定他们的载客量以及载货量，并且将所有的变量进行封装。

设计难点：

客户每预定一辆车，每辆车的库存就要相应的减少，若库存不足则应弹出提示。（可以使用异常来处理，但演示代码未体现）。

租金 = 车型的每日租金*天数。若客户选择多辆车，则总金额就应该将多辆车的租金相加。

上图为运行样例，可根据自己想法添加个性化设置。

一、新建一个Bus类

public class Bus {
private int serialNumber;       //序号
private String model;       //车型
private double rent;        //租金
private int passengerCapacity;      //载客量
private double cargoCapacity;       //载货量
private int stock;      //库存

public Bus (int serialNumber,String model,double rent,int passengerCapacity,double cargoCapacity,int stock) {
    this.serialNumber = serialNumber;
    this.model = model;
    this.rent = rent;
    this.passengerCapacity = passengerCapacity;
    this.cargoCapacity = cargoCapacity;
    this.stock = stock;
}

//封装
public void setSerialNumber(int serialNumber) {
    this.serialNumber = serialNumber;
}

public int getSerialNumber() {
    return serialNumber;
}

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

public String getModel() {
    return model;
}

public void setRent(double rent) {
    this.rent = rent;
}

public double getRent() {
    return rent;
}

public void setPassengerCapacity(int passengerCapacity) {
    this.passengerCapacity = passengerCapacity;
}

public int getPassengerCapacity() {
    return passengerCapacity;
}

public void setCargoCapacity(double cargoCapacity) {
    this.cargoCapacity = cargoCapacity;
}

public double getCargoCapacity() {
    return cargoCapacity;
}

public void setStock(int stock) {
    this.stock = stock;
}

public int getStock() {
    return stock;
 }
}

二、新建Car类

public class Bus {
private int serialNumber;       //序号
private String model;       //车型
private double rent;        //租金
private int passengerCapacity;      //载客量
private double cargoCapacity;       //载货量
private int stock;      //库存

public Bus (int serialNumber,String model,double rent,int passengerCapacity,double cargoCapacity,int stock) {
    this.serialNumber = serialNumber;
    this.model = model;
    this.rent = rent;
    this.passengerCapacity = passengerCapacity;
    this.cargoCapacity = cargoCapacity;
    this.stock = stock;
}

//封装
public void setSerialNumber(int serialNumber) {
    this.serialNumber = serialNumber;
}

public int getSerialNumber() {
    return serialNumber;
}

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

public String getModel() {
    return model;
}

public void setRent(double rent) {
    this.rent = rent;
}

public double getRent() {
    return rent;
}

public void setPassengerCapacity(int passengerCapacity) {
    this.passengerCapacity = passengerCapacity;
}

public int getPassengerCapacity() {
    return passengerCapacity;
}

public void setCargoCapacity(double cargoCapacity) {
    this.cargoCapacity = cargoCapacity;
}

public double getCargoCapacity() {
    return cargoCapacity;
}

public void setStock(int stock) {
    this.stock = stock;
}

public int getStock() {
    return stock;
}
}

三、新建Truck类

public class Truck {
private int serialNumber;       //序号
private String model;       //车型
private double rent;        //租金
private int passengerCapacity;      //载客量
private double cargoCapacity;       //载货量
private int stock;      //库存

public Truck(int serialNumber,String model,double rent,int passengerCapacity,double cargoCapacity,int stock) {
    this.serialNumber = serialNumber;
    this.model = model;
    this.rent = rent;
    this.passengerCapacity = passengerCapacity;
    this.cargoCapacity = cargoCapacity;
    this.stock = stock;
}

//封装

public void setSerialNumber(int serialNumber) {
    this.serialNumber = serialNumber;
}

public int getSerialNumber() {
    return serialNumber;
}

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

public String getModel() {
    return model;
}

public void setRent(double rent) {
    this.rent = rent;
}

public double getRent() {
    return rent;
}

public void setPassengerCapacity(int passengerCapacity) {
    this.passengerCapacity = passengerCapacity;
}

public int getPassengerCapacity() {
    return passengerCapacity;
}

public void setCargoCapacity(double cargoCapacity) {
    this.cargoCapacity = cargoCapacity;
}

public double getCargoCapacity() {
    return cargoCapacity;
}

public void setStock(int stock) {
    this.stock = stock;
}

public int getStock() {
    return stock;
}
}

四、新建测试类

import java.util.Scanner;

public class Test {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);

Bus bus1 = new Bus(1," 小皮卡",200,5,2,10);
    Bus bus2 = new Bus(2," 金杯面包车",300,12,0,10);
    Bus bus3 = new Bus(3," 五菱宏光",100,7,0,10);

    Car car1 = new Car(4," 宝马530",600,5,0,10);
    Car car2 = new Car(5," 奥迪A6L",600,5,0,10);
    Car car3 = new Car(6," 奔驰E00",500,5,0,10);

    Truck truck1 = new Truck(6," 小卡车",100,2,20,10);
    Truck truck2 = new Truck(7," 中卡车",150,2,30,10);
    Truck truck3 = new Truck(8," 大卡车",200,2,35,10);


    System.out.println("欢迎使用租车系统");
    System.out.println("您是否需要租车 1：是，0退出系统");
    int a = input.nextInt();        //判断是否需要租车
    if (a == 1) {
        System.out.println("已经进入租车界面。");
        System.out.println("下面是车辆信息清单。");
        System.out.println("序号；"+bus1.getSerialNumber()+" 车型；"+ bus1.getModel()+" 租金/日："+bus1.getRent()+" 额定载客："+bus1.getPassengerCapacity()+" 额定载重："+bus1.getCargoCapacity()+" 库存："+bus1.getStock());
        System.out.println("序号；"+bus2.getSerialNumber()+" 车型；"+ bus2.getModel()+" 租金/日："+bus2.getRent()+" 额定载客："+bus2.getPassengerCapacity()+" 额定载重："+bus2.getCargoCapacity()+" 库存："+bus2.getStock());
        System.out.println("序号；"+bus3.getSerialNumber()+" 车型；"+ bus3.getModel()+" 租金/日："+bus3.getRent()+" 额定载客："+bus3.getPassengerCapacity()+" 额定载重："+bus3.getCargoCapacity()+" 库存："+bus3.getStock());
        System.out.println("序号；"+car1.getSerialNumber()+" 车型："+ car1.getModel()+" 租金/日："+car1.getRent()+" 额定载客："+car1.getPassengerCapacity()+" 额定载重："+car1.getCargoCapacity()+" 库存："+car1.getStock());
        System.out.println("序号；"+car2.getSerialNumber()+" 车型："+ car2.getModel()+" 租金/日："+car2.getRent()+" 额定载客："+car2.getPassengerCapacity()+" 额定载重："+car2.getCargoCapacity()+" 库存："+car2.getStock());
        System.out.println("序号；"+car3.getSerialNumber()+" 车型："+ car3.getModel()+" 租金/日："+car3.getRent()+" 额定载客："+car3.getPassengerCapacity()+" 额定载重："+car3.getCargoCapacity()+" 库存："+car3.getStock());
        System.out.println("序号；"+truck1.getSerialNumber()+" 车型："+ truck1.getModel()+" 租金/日："+truck1.getRent()+" 额定载客："+truck1.getPassengerCapacity()+" 额定载重："+truck1.getCargoCapacity()+" 库存："+truck1.getStock());
        System.out.println("序号；"+truck2.getSerialNumber()+" 车型："+ truck2.getModel()+" 租金/日："+truck2.getRent()+" 额定载客："+truck2.getPassengerCapacity()+" 额定载重："+truck2.getCargoCapacity()+" 库存："+truck2.getStock());
        System.out.println("序号；"+truck3.getSerialNumber()+" 车型："+ truck3.getModel()+" 租金/日："+truck3.getRent()+" 额定载客："+truck3.getPassengerCapacity()+" 额定载重："+truck3.getCargoCapacity()+" 库存："+truck3.getStock());

        System.out.println("请输入租车的数量：");
        int quantity = input.nextInt();
        if (quantity <= (car1.getStock()+car2.getStock()+car3.getStock()+truck1.getStock()+truck2.getStock()+truck3.getStock()+bus1.getStock()+bus2.getStock()+bus3.getStock())) {
            double moneySum = 0;
            System.out.println("请输入要租车的序号");
            if (quantity > 1) {
                for (int count = 0;count < quantity;count++) {
                    int number = input.nextInt();
                    switch (number)
                    {
                        case 1:
                            bus1.setStock(bus1.getStock()-1);
                            if (bus1.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择1号车,日租金：200");
                                System.out.println("请输入你想要租用的天数");
                                int days1 = input.nextInt();
                                moneySum = (moneySum+bus1.getRent()*days1);
                                continue;
                            }
                        case 2:
                            bus2.setStock(bus2.getStock()-1);
                            if (bus2.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择2号车,日租金：300");
                                System.out.println("请输入你想要租用的天数");
                                int days2 = input.nextInt();
                                moneySum = (moneySum+bus2.getRent()*days2);
                                continue;
                            }
                        case 3:
                            bus3.setStock(bus3.getStock()-1);
                            if (bus3.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择3号车,日租金：100");
                                System.out.println("请输入你想要租用的天数");
                                int days3 = input.nextInt();
                                moneySum = (moneySum+bus3.getRent()*days3);
                                continue;
                            }
                        case 4:
                            car1.setStock(car1.getStock()-1);
                            if (car1.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择4号车,日租金：600");
                                System.out.println("请输入你想要租用的天数");
                                int days1 = input.nextInt();
                                moneySum = (moneySum+car1.getRent()*days1);
                                continue;
                            }
                        case 5:
                            car2.setStock(car2.getStock()-1);
                            if (car2.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择5号车,日租金：600");
                                System.out.println("请输入你想要租用的天数");
                                int days5 = input.nextInt();
                                moneySum = (moneySum+car2.getRent()*days5);
                                continue;
                            }
                        case 6:
                            car3.setStock(car3.getStock()-1);
                            if (car3.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择1号车,日租金：200");
                                System.out.println("请输入你想要租用的天数");
                                int days6 = input.nextInt();
                                moneySum = (moneySum+car3.getRent()*days6);
                                continue;
                            }
                        case 7:
                            truck1.setStock(truck1.getStock()-1);
                            if (truck1.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择7号车,日租金：100");
                                System.out.println("请输入你想要租用的天数");
                                int days7 = input.nextInt();
                                moneySum = (moneySum+truck1.getRent()*days7);
                                System.out.println("您选择租用7号车"+days7+"天，当前租金为"+moneySum);
                                continue;
                            }
                        case 8:
                            truck2.setStock(truck2.getStock()-1);
                            if (truck2.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择8号车,日租金：150");
                                System.out.println("请输入你想要租用的天数");
                                int days8 = input.nextInt();
                                moneySum = (moneySum+truck2.getRent()*days8);
                                continue;
                            }
                        case 9:
                            truck3.setStock(truck3.getStock()-1);
                            if (truck3.getRent() < 0) {
                                System.out.println("很抱歉，我们的库存不足。");
                                continue;
                            }else {
                                System.out.println("您已选择1号车,日租金：200");
                                System.out.println("请输入你想要租用的天数");
                                int days9 = input.nextInt();
                                moneySum = (moneySum+truck3.getRent()*days9);
                                continue;
                            }
                    }
                }
            } else {
                int number = input.nextInt();
                switch (number)
                {
                    case 1:
                        bus1.setStock(bus1.getStock()-1);
                        if (bus1.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择1号车,日租金：200");
                            System.out.println("请输入你想要租用的天数");
                            int days1 = input.nextInt();
                            moneySum = (moneySum+bus1.getRent()*days1);
                        }
                    case 2:
                        bus2.setStock(bus2.getStock()-1);
                        if (bus2.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择2号车,日租金：300");
                            System.out.println("请输入你想要租用的天数");
                            int days2 = input.nextInt();
                            moneySum = (moneySum+bus2.getRent()*days2);
                        }
                    case 3:
                        bus3.setStock(bus3.getStock()-1);
                        if (bus3.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择3号车,日租金：100");
                            System.out.println("请输入你想要租用的天数");
                            int days3 = input.nextInt();
                            moneySum = (moneySum+bus3.getRent()*days3);
                        }
                    case 4:
                        car1.setStock(car1.getStock()-1);
                        if (car1.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择4号车,日租金：600");
                            System.out.println("请输入你想要租用的天数");
                            int days1 = input.nextInt();
                            moneySum = (moneySum+car1.getRent()*days1);
                        }
                    case 5:
                        car2.setStock(car2.getStock()-1);
                        if (car2.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择5号车,日租金：600");
                            System.out.println("请输入你想要租用的天数");
                            int days5 = input.nextInt();
                            moneySum = (moneySum+car2.getRent()*days5);
                        }
                    case 6:
                        car3.setStock(car3.getStock()-1);
                        if (car3.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择1号车,日租金：200");
                            System.out.println("请输入你想要租用的天数");
                            int days6 = input.nextInt();
                            moneySum = (moneySum+car3.getRent()*days6);
                        }
                    case 7:
                        truck1.setStock(truck1.getStock()-1);
                        if (truck1.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择7号车,日租金：100");
                            System.out.println("请输入你想要租用的天数");
                            int days7 = input.nextInt();
                            moneySum = (moneySum+truck1.getRent()*days7);
                            System.out.println("您选择租用7号车"+days7+"天，当前租金为"+moneySum);
                        }
                    case 8:
                        truck2.setStock(truck2.getStock()-1);
                        if (truck2.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择8号车,日租金：150");
                            System.out.println("请输入你想要租用的天数");
                            int days8 = input.nextInt();
                            moneySum = (moneySum+truck2.getRent()*days8);
                        }
                    case 9:
                        truck3.setStock(truck3.getStock()-1);
                        if (truck3.getRent() < 0) {
                            System.out.println("很抱歉，我们的库存不足。");
                        }else {
                            System.out.println("您已选择1号车,日租金：200");
                            System.out.println("请输入你想要租用的天数");
                            int days9 = input.nextInt();
                            moneySum = (moneySum+truck3.getRent()*days9);
                        }
                }
            }
            System.out.println("总租金："+moneySum);
            System.out.println("欢迎您下次使用");
        } else {
            System.out.println("很抱歉，您的订单需求量太大我们库存不足");
        }
    } else {
        System.out.println("您已退出系统");
    }
}
}

五、运行示例：