java如何实现简单的汽车租赁系统

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具体内容如下

欢迎进入xx汽车租赁公司
请输入用户名
请输入密码
（用户名默认是名字缩写，密码是123，将登陆模块封装到方法中去调用方法）
请输入您的操作
1）查看现在车库中的所有车辆信息
2）租赁汽车
3）往车库中添加汽车
4）修改汽车租赁价格信息

用switch去判断操作

类分析

代码：

package com.youjiuye.bms;public class CRMS {    public static void main(String[] args) {        Wellcome();    }    public static void Wellcome(){        System.out.println("***********************************");        System.out.println("\t欢迎来到何老板图书馆                        ");        System.out.println("***********************************");        // 获取用户信息        Tool.inputInfo();    }}

package com.youjiuye.bms;/* * 汽车租赁系统的功能模块类 * 1、管理员添加车库中的车辆信息 * 2、用户租赁车辆 * 3、用户查看车库中的车辆 * 4、用户查看自己租赁的车辆 * 5、管理员修改车辆的价格 * 6、用户结算租金 */public class CRMSService {    //    1、管理员添加车库中的车辆信息    public boolean addVehicel(MotoVehicel mo){        boolean bo = false;        MotoVehicel[] ms = MotoVehicel.getMs();        if(ms.length > 0){                        for (int i = 0; i < ms.length; i++) {                if(ms[i] == null){                    ms[i] = mo;                    bo = true;                    System.out.println("添加成功！");                    break;                }            }        }        return bo;    }    //      2、用户租赁车辆    public void rent(Users u,MotoVehicel mo){                MotoVehicel[] ms = u.getUms();        for (int i = 0; i < ms.length; i++) {            if(ms[i]  == null){                ms[i] = mo;                break;            }        }    }    //      4、用户查看自己租赁的车辆    public boolean browse(Users u){        boolean bo  = false;        MotoVehicel[] mo = u.getUms();        if(mo.length > 0){                        for (int i = 0; i < mo.length; i++) {                if(mo[i] != null){                    System.out.println(mo[i].toString());                    bo = true;                }                            }        }        return bo;            }    //      5、管理员修改车辆的价格    public boolean update(String no,double price){        boolean bo = false;        if(MotoVehicel.arrayExit()){                        MotoVehicel[] ms = MotoVehicel.getMs();            for (int i = 0; i < ms.length; i++) {                if(ms[i] != null && ms[i].getNo().equals(no)){                    ms[i].setRentPrice(price);                    System.out.println("修改成功！");                    System.out.println(ms[i]);                    bo = true;                }            }        }else{            System.out.println("当前车库中还没有车辆");        }                return bo;    }    //      6、用户结算租金    public double settleAccount(Users u,int days){        double price = 0;        MotoVehicel[] mo = u.getUms();        if(mo.length > 0){                for (int i = 0; i < mo.length; i++) {                if(mo[i] != null){                                        price += mo[i].getRentPrice() * days;                }                            }        }                return price;    }        // 删除车库中的车辆    public void delete(MotoVehicel moo){        MotoVehicel[] mo = MotoVehicel.getMs();        if(mo.length > 0){            for (int i = 0; i < mo.length; i++) {                if(mo[i] != null && mo[i].equals(moo)){                    mo[i] = null;                }            }        }            }        // 根据车牌号来判断车库中是否含有该车辆            public boolean judgeExitMotoVehicel(String no){                boolean bo = false;                MotoVehicel[] ms = MotoVehicel.getMs();                if(ms.length >0){                    for (int i = 0; i < ms.length; i++) {                        if(ms[i].getNo().equals(no)){                            bo = true;                            break;                        }                    }                }                return bo;            }}

package com.youjiuye.bms;/* * 汽车租赁系统的功能模块类 * 1、管理员添加车库中的车辆信息 * 2、用户租赁车辆 * 3、用户查看车库中的车辆 * 4、用户查看自己租赁的车辆 * 5、管理员修改车辆的价格 * 6、用户结算租金 */public class CRMSService {    //    1、管理员添加车库中的车辆信息    public boolean addVehicel(MotoVehicel mo){        boolean bo = false;        MotoVehicel[] ms = MotoVehicel.getMs();        if(ms.length > 0){                        for (int i = 0; i < ms.length; i++) {                if(ms[i] == null){                    ms[i] = mo;                    bo = true;                    System.out.println("添加成功！");                    break;                }            }        }        return bo;    }    //      2、用户租赁车辆    public void rent(Users u,MotoVehicel mo){                MotoVehicel[] ms = u.getUms();        for (int i = 0; i < ms.length; i++) {            if(ms[i]  == null){                ms[i] = mo;                break;            }        }    }    //      4、用户查看自己租赁的车辆    public boolean browse(Users u){        boolean bo  = false;        MotoVehicel[] mo = u.getUms();        if(mo.length > 0){                        for (int i = 0; i < mo.length; i++) {                if(mo[i] != null){                    System.out.println(mo[i].toString());                    bo = true;                }                            }        }        return bo;            }    //      5、管理员修改车辆的价格    public boolean update(String no,double price){        boolean bo = false;        if(MotoVehicel.arrayExit()){                        MotoVehicel[] ms = MotoVehicel.getMs();            for (int i = 0; i < ms.length; i++) {                if(ms[i] != null && ms[i].getNo().equals(no)){                    ms[i].setRentPrice(price);                    System.out.println("修改成功！");                    System.out.println(ms[i]);                    bo = true;                }            }        }else{            System.out.println("当前车库中还没有车辆");        }                return bo;    }    //      6、用户结算租金    public double settleAccount(Users u,int days){        double price = 0;        MotoVehicel[] mo = u.getUms();        if(mo.length > 0){                for (int i = 0; i < mo.length; i++) {                if(mo[i] != null){                                        price += mo[i].getRentPrice() * days;                }                            }        }                return price;    }        // 删除车库中的车辆    public void delete(MotoVehicel moo){        MotoVehicel[] mo = MotoVehicel.getMs();        if(mo.length > 0){            for (int i = 0; i < mo.length; i++) {                if(mo[i] != null && mo[i].equals(moo)){                    mo[i] = null;                }            }        }            }        // 根据车牌号来判断车库中是否含有该车辆            public boolean judgeExitMotoVehicel(String no){                boolean bo = false;                MotoVehicel[] ms = MotoVehicel.getMs();                if(ms.length >0){                    for (int i = 0; i < ms.length; i++) {                        if(ms[i].getNo().equals(no)){                            bo = true;                            break;                        }                    }                }                                return bo;            }}

package com.youjiuye.bms;public class Users {    private String identity;    private String password;        // 存放租赁的车辆信息    private MotoVehicel[] ums = new MotoVehicel[10];          public MotoVehicel[] getUms() {        return ums;    }    public void setUms(MotoVehicel[] ums) {        this.ums = ums;    }    public Users(){}    public Users(String identity, String password) {        super();        this.identity = identity;        this.password = password;    }    public String getIdentity() {        return identity;    }    public void setIdentity(String identity) {        this.identity = identity;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    @Override    public String toString() {        return "Users [identity=" + identity + ", password=" + password + "]";    }}

package com.youjiuye.bms;/* * 所有车的父类 *  */public abstract class MotoVehicel {    private String no;    private String brand;    private String Color;    private int mileage;    private double rentPrice;    private static MotoVehicel[] ms= new MotoVehicel[10];            public MotoVehicel(){}    public MotoVehicel(String no, String brand, String color, int mileage, double rentPrice) {        super();        this.no = no;        this.brand = brand;        Color = color;        this.mileage = mileage;        this.rentPrice = rentPrice;    }    public String getNo() {        return no;    }    public void setNo(String no) {        this.no = no;    }    public String getBrand() {        return brand;    }    public void setBrand(String brand) {        this.brand = brand;    }    public String getColor() {        return Color;    }    public void setColor(String color) {        Color = color;    }    public int getMileage() {        return mileage;    }    public void setMileage(int mileage) {        this.mileage = mileage;    }    public double getRentPrice() {        return rentPrice;    }    public void setRentPrice(double rentPrice) {        this.rentPrice = rentPrice;    }        // 获取车库数组    public static MotoVehicel[] getMs() {        return ms;    }        // 租赁功能    public abstract double rent(int days);        // 初始化车库数组    public static final void init(){        Car c1 = new Car("001", "bwm","蓝色",10000, 500,"x5");        ms[0] = c1;        Bus b1 = new Bus("8567", "景龙", "绿色",2000, 800,16);        ms[1] = b1;    }        // 判断当前车库是否有车存在    public static boolean arrayExit(){        boolean bo = false;        if(ms.length > 0){            for (int i = 0; i < ms.length; i++) {                if(ms[i] != null){                    bo = true;                }            }        }else{            bo = false;        }        return bo;            }        // 显示车库中现有的车辆    public static void show(){        System.out.println("当前车库的车：");        if(arrayExit()){            for (int i = 0; i < ms.length; i++) {                if(ms[i] != null){                                        System.out.println(ms[i]);                }            }        }else{            System.out.println("当前车库中没有车辆");        }            }     }

```javapackage com.youjiuye.bms;/* * 公交车 */public class Bus extends MotoVehicel{    private int seatCount;        public Bus(){}    public Bus(String no, String brand, String color, int mileage, double rentPrice,int seatCount) {        super(no, brand, color, mileage, rentPrice);        this.seatCount = seatCount;        }    public int getSeatCount() {        return seatCount;    }    public void setSeatCount(int seatCount) {        this.seatCount = seatCount;    }        @Override    public String toString() {        return "Bus [ 车牌号："+ getNo()+"\t品牌："+getBrand()+"\t座位数："+getSeatCount()+"\t颜色："+ getColor()+"\t里程："+getMileage()+"\t日租价："+getRentPrice()+ "]";    }    @Override    public double rent(int days) {                return days * getRentPrice();    }    }

package com.youjiuye.bms;/* * 小轿车 */public class Car extends MotoVehicel{    private String type;        public Car(){}    public Car(String no, String brand, String color, int mileage, double rentPrice,String type) {        super(no, brand, color, mileage, rentPrice);        this.type = type;        }    public String getType() {        return type;    }    public void setType(String type) {        this.type = type;    }        @Override    public String toString() {        return "Car [ 车牌号： "+ getNo()+"\t品牌："+getBrand()+"\t型号："+getType()+"\t颜色："+ getColor()+"\t里程："+getMileage()+"\t日租价："+getRentPrice()+ "]";    }    @Override    public double rent(int days) {                return days * getRentPrice();    }}

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