本文实例为大家分享了java实现租车系统Demo，供大家参考，具体内容如下

这也是参考了mooc上的一个基础项目，所以拿来写一下。不过我的Demo肯定有不好或者错误的地方，欢迎指出

1、项目功能/需求

a、展示所有可租车辆
b、选择车型、租车量
c、展示租车清单，包含：总金额、总载货量、总载客量

2、项目系统UML图

3、项目源码Demo

Car类

package Car.rental;public class Car { private String name; private int rent; private int passenger; private double volume; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getRent() { return rent; } public void setRent(int rent) { this.rent = rent; } public int getPassenger() { return passenger; } public void setPassenger(int passenger) { this.passenger = passenger; } public double getVolume() { return volume; } public void setVolume(double volume) { this.volume = volume; }}

Truck类

package Car.rental;public class Truck extends Car { private String name; private int rent; private double volume; public Truck(String name,int rent,double volume) { this.name=name; this.rent=rent; this.volume=volume; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getRent() { return rent; } public void setRent(int rent) { this.rent = rent; } public double getVolume() { return volume; } public void setVolume(double volume) { this.volume = volume; }}

Coach类

package Car.rental;public class Coach extends Car { private String name; private int rent; private int passenger; public Coach(String name,int rent,int passenger) { this.name=name; this.passenger=passenger; this.rent=rent; } public int getPassenger() { return passenger; } public void setPassenger(int passenger) { this.passenger = passenger; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getRent() { return rent; } public void setRent(int rent) { this.rent = rent; }}

Pickup类

package Car.rental;public class Pickup extends Car { private String name; private int rent; private int passenger; private double volume; public Pickup(String name,int rent,int passenger,double volume) { this.name=name; this.passenger=passenger; this.rent=rent; this.volume=volume; } public int getPassenger() { return passenger; } public void setPassenger(int passenger) { this.passenger = passenger; } public double getVolume() { return volume; } public void setVolume(double volume) { this.volume = volume; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getRent() { return rent; } public void setRent(int rent) { this.rent = rent; }}

测试类

package Car.rental;import java.util.Scanner;public class main_Car { public static void main(String[] args) { // TODO Auto-generated method stub /*****创建车对象*******/ Car[] Allcar= {new Truck("拉丝货车",200,1.1),new Coach("法法客车",150,20), new Pickup("无名皮卡车",300,4,0.5)}; System.out.println("请问您是否要租车：1.是 2.否"); Scanner scan=new Scanner(System.in); String input=scan.next(); if(input.equals("1")) { int all_rent = 0;//总租金 int all_passenger=0;//总载客 double all_volume=0.0;//总载货 System.out.println("您可租车的类型及其价目"); System.out.println("序号\t汽车名称\t租金\t容量\t"); for(int i=0;i<Allcar.length;i++) { if(Allcar[i] instanceof Truck) { System.out.println((i+1)+"\t"+Allcar[i].getName()+"\t"+Allcar[i].getRent()+"\t"+"载货："+Allcar[i].getVolume()); } if(Allcar[i] instanceof Coach) { System.out.println((i+1)+"\t"+Allcar[i].getName()+"\t"+Allcar[i].getRent()+"\t"+"载客："+Allcar[i].getPassenger()); } if(Allcar[i] instanceof Pickup) { System.out.println((i+1)+"\t"+Allcar[i].getName()+"\t"+Allcar[i].getRent()+"\t"+"载客："+Allcar[i].getPassenger()+"载货："+Allcar[i].getVolume()); } } System.out.println("请输入您要租车的数量"); int sum=scan.nextInt(); int Car_order; for(int j=0;j<sum;j++) { System.out.print("你要租的第"+(j+1)+"辆车的序号是："); Car_order=scan.nextInt(); System.out.println(); if(Allcar[Car_order-1] instanceof Truck) { all_rent+=Allcar[Car_order-1].getRent(); all_volume+=Allcar[Car_order-1].getVolume(); } if(Allcar[Car_order-1] instanceof Coach) { all_rent+=Allcar[Car_order-1].getRent(); all_passenger+=Allcar[Car_order-1].getPassenger(); } if(Allcar[Car_order-1] instanceof Pickup) { all_rent+=Allcar[Car_order-1].getRent(); all_passenger+=Allcar[Car_order-1].getPassenger(); all_volume+=Allcar[Car_order-1].getVolume(); } } System.out.println("您的总租金是："+all_rent); System.out.println("您的总载货是:"+all_volume); System.out.println("您的总载客是："+all_passenger); } }}

4、项目命令行演示结果

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。