汽车租赁管理系统 源代码 Java初级小项目

   今天再给大家分享一个小项目:汽车租赁管理系统。用的是Java语言开发的,代码不多,大概260行左右吧,系统是实现图书的新增图书、删除图书、借阅图书、归还图书、查看图书等简单的功能(后附源代码)!!!

  首先展示一下运行界面效果图:运行代码后,会在控制台显示如下界面:

然后让用户选择,如果用户不小心或者误输入了错误的数,会再次让用户进行输入。

  当用户输入1后,可以选择要租赁的汽车品牌:

包括别克、宝马两大选项。

  当用户继续输入1后,可以选择要租赁的汽车类型,效果如下:

 

  用户继续输入1后,可以选择要租赁的汽车的天数,效果如下:

  用户继续输入要租赁的汽车的天数后,效果如下:

会显示分配给自己的汽车牌号、以及需要支付的租赁费用:

 

  同理,初始时,用户输入2后,接着输入租赁的汽车品牌,继续选择租赁的汽车车位数:

 

 

 

  源代码如下:

1 . 汽车业务类

 1 package com.manage;
 2 
 3 import com.vehicles.Bus;
 4 import com.vehicles.Car;
 5 import com.vehicles.Vehicle;
 6 
 7 //汽车业务类
 8 public class VehicleOperation {
 9     //汽车数组
10     Vehicle[] vehicles = new Vehicle[8];
11     
12     //汽车信息初始化
13     public void init(){
14         //向上转型
15         vehicles[0] = new Car("京N85764","宝马",800,"X6"); //Vehicle v = new Car();
16         vehicles[1] = new Car("京L79654","宝马",600,"550i"); //Vehicle v = new Car();
17         vehicles[2] = new Car("京Y96584","别克",400,"林荫大道"); //Vehicle v = new Car();
18         vehicles[3] = new Car("京M36589","别克",500,"GL8"); //Vehicle v = new Car();
19         vehicles[4] = new Bus("京Y85754","金龙",1000,34); //Vehicle v = new Bus();
20         vehicles[5] = new Bus("京U88888","金龙",800,16); //Vehicle v = new Bus();
21         vehicles[6] = new Bus("京T66666","金杯",1200,34); //Vehicle v = new Bus();
22         vehicles[7] = new Bus("京P90876","金杯",700,16); //Vehicle v = new Bus();
23     }
24     
25     //租车:简单工厂模式
26     //参数:品牌   座位数   型号  (客车:品牌  座位数   "";轿车:品牌  0  型号)
27     public Vehicle rentVehicle(String brand,int seatCount,String type){
28         Vehicle v = null;
29         //根据用户提供的租车信息(方法参数)去遍历汽车数组,找到相应车辆返回给用户
30         for(Vehicle vehicle:vehicles){
31             if(vehicle instanceof Car){
32                 //轿车
33                 Car car = (Car)vehicle; //向下转型
34                 //轿车的品牌和型号与用户想要的轿车品牌与型号吻合
35                 if(car.getBrand().equals(brand) && car.getType().equals(type)){
36                     v = car;
37                     break;
38                 }
39             }else{
40                 //客车
41                 Bus bus = (Bus)vehicle; //向下转型
42                 //客车的品牌和座位数与用户想要的客车品牌与座位数吻合
43                 if(bus.getBrand().equals(brand) && bus.getSeatCount()==seatCount){
44                     v = bus;
45                     break;
46                 }
47             }
48         }
49         return v;
50     }
51 }

 

2 . 汽车租赁管理类:入口测试类

 1 package com.manage;
 2 
 3 import java.util.Scanner;
 4 
 5 import com.vehicles.Vehicle;
 6 
 7 //汽车租赁管理类:入口测试类
 8 public class VehicleRent {
 9     public static void main(String[] args) {
10         Scanner input = new Scanner(System.in);
11         VehicleOperation vehicleOpr = new VehicleOperation();
12         System.out.println("************欢迎光临腾飞汽车租赁有限公司*****************");
13         System.out.print("请选择您要租赁的车型:1、轿车  2、客车  ");
14         int vehicleType = input.nextInt();
15         
16         //获取用户租赁汽车的三个条件:品牌   座位数   型号
17         String brand = "";
18         int seatCount = 0;
19         String type = "";
20         
21         switch(vehicleType){
22             case 1: //租赁轿车   获取到用户想租赁的轿车的品牌及型号信息
23                 System.out.print("请选择您要租赁的汽车品牌:1、别克  2、宝马 ");
24                 int choose = input.nextInt();
25                 if(choose == 1){
26                     brand = "别克";
27                     System.out.print("请选择您要租赁的汽车类型:1、林荫大道  2、GL8");
28                     type = (input.nextInt() == 1 )?"林荫大道":"GL8";
29                 }else{
30                     brand = "宝马";
31                     System.out.print("请选择您要租赁的汽车类型:1、X6  2、550i");
32                     type = (input.nextInt() == 1 )?"X6":"550i";
33                 }
34                 
35                 break;
36             case 2://租赁客车 获取到用户想租赁的客车的品牌及座位数信息
37                 System.out.print("请选择您要租赁的汽车品牌:1、金杯  2、金龙 ");
38                 brand = (input.nextInt() == 1 )?"金杯":"金龙";
39                 System.out.print("请选择您要租赁的汽车座位数:1、16座  2、34座 ");
40                 seatCount = (input.nextInt() == 1 )?16:34;
41                 break;
42         }
43         
44         //初始化汽车信息
45         vehicleOpr.init();
46         //租车
47         Vehicle v = vehicleOpr.rentVehicle(brand, seatCount, type);
48         //提示用户租车的车牌号    计算租金(多态,会根据具体返回的汽车子类对象,调用重写后的计算租金方法)
49         System.out.print("请输入您要租赁汽车的天数:");
50         int days = input.nextInt();
51         float price = v.clacRent(days);
52         System.out.println("分配给您的汽车牌号为:"+v.getVehicleId());
53         System.out.println("您需要支付的租赁费用为:"+price+"元");
54     }
55 }

 

3 . 子类:客车类

 1 package com.vehicles;
 2 
 3 //子类:客车类
 4 public class Bus extends Vehicle {
 5     //座位数
 6     private int seatCount;
 7     
 8     public Bus(){}
 9     public Bus(String vehicleId, String brand, int perRent,int seatCount){
10         super(vehicleId,brand,perRent);
11         this.seatCount = seatCount;
12     }
13 
14     public int getSeatCount() {
15         return seatCount;
16     }
17     public void setSeatCount(int seatCount) {
18         this.seatCount = seatCount;
19     }
20     
21     //根据客车计算租金的规则重写父类方法
22     public float clacRent(int days) {
23         //租金 = 日租金 * 租赁周期
24         float price = this.getPerRent() * days;
25         //折扣规则
26         if(days>=3 && days<7){
27             price *=  0.9f;
28         }else if(days>=7 &&days<30){
29             price *=  0.8f;
30         }else if(days>=30 && days<150){
31             price *=  0.7f;
32         }else if(days>=150){
33             price *= 0.6f;
34         }
35         return price;
36     }
37 
38 }

 

4 . 子类:轿车类

 1 package com.vehicles;
 2 
 3 //子类:轿车类
 4 public class Car extends Vehicle {
 5     //型号
 6     private String type;
 7     
 8     public Car(){}
 9     public Car(String vehicleId, String brand, int perRent,String type){
10         super(vehicleId,brand,perRent);
11         this.type = type;
12     }
13     
14     public String getType() {
15         return type;
16     }
17 
18     public void setType(String type) {
19         this.type = type;
20     }
21 
22     //根据轿车计算租金的规则重写父类方法
23     public float clacRent(int days) {
24         //租金 = 日租金 * 租赁周期
25         float price = this.getPerRent() * days;
26         //折扣规则
27         if(days>7 && days<=30){
28             price *=  0.9f;
29         }else if(days>30 &&days<=150){
30             price *=  0.8f;
31         }else if(days>150){
32             price *=  0.7f;
33         }
34         return price;
35     }
36 
37 }

 

5 . 父类:汽车类

 1 package com.vehicles;
 2 
 3 //父类:汽车类
 4 public abstract class Vehicle {
 5     //车牌号   品牌   日租金
 6     private String vehicleId;
 7     private String brand;
 8     private int perRent;
 9     
10     public Vehicle(){}
11     
12     
13     public Vehicle(String vehicleId, String brand, int perRent) {
14         this.vehicleId = vehicleId;
15         this.brand = brand;
16         this.perRent = perRent;
17     }
18 
19 
20     public String getVehicleId() {
21         return vehicleId;
22     }
23     public void setVehicleId(String vehicleId) {
24         this.vehicleId = vehicleId;
25     }
26     public String getBrand() {
27         return brand;
28     }
29     public void setBrand(String brand) {
30         this.brand = brand;
31     }
32     public int getPerRent() {
33         return perRent;
34     }
35     public void setPerRent(int perRent) {
36         this.perRent = perRent;
37     }
38     //抽象方法:计算租金-->根据租赁周期来计算租金
39     public abstract float clacRent(int days);
40 }

 

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posted @ 2020-11-18 20:14  你是人间四月天丿  阅读(4648)  评论(0编辑  收藏  举报