**java编写一个控制台版的“达达租车系统”。**
目标
java编写一个控制台版的“达达租车系统”
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
三大分析
数据模型分析
业务模型分析
显示和流程分析
成品
思路
首先定义一个Car类,它包含基本功能:车名、载客数、载货量、日租金。接着创建三个小类,分别是客车类、货车类和皮卡类(既能载客又能载货),它们都继承Car类。最后需要一个主类,用于开启整个系统,调用每个小类。
代码
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| package com.jinger;
public abstract class Car { public int rent; public int people; public int loads; public String name;
public int getRent(){ return rent; } public void setRent(int rent){ this.rent=rent; } public int getPeople(){ return people; } public void setPeople(int people){ this.people=people; } public int getLoads(){ return loads; } public void setLoads(int loads){ this.loads=loads; } public String getName(){ return name; } public void setName(String name){ this.name=name; } }
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客车类
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| package com.jinger;
public class PassageCar extends Car{ public PassageCar(String name,int people,int rent){ this.setName(name); this.setPeople(people); this.setRent(rent); } public String toString(){ return this.getName()+"\t"+this.getPeople()+"\t\t\t\t"+this.getRent(); } }
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卡车类
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| package com.jinger;
public class Truck extends Car { public Truck(String name,int loads,int rent){ this.setName(name); this.setLoads(loads); this.setRent(rent); } public String toString(){ return this.getName()+"\t\t\t"+this.getLoads()+"\t\t"+this.getRent(); } }
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皮卡类
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| package com.jinger;
public class Pickup extends Car { public Pickup(String name,int people,int loads,int rent){ this.setName(name); this.setPeople(people); this.setLoads(loads); this.setRent(rent); } public String toString(){ return this.getName()+"\t"+this.getPeople()+"\t\t"+this.getLoads()+"\t\t"+this.getRent(); } }
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主类
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| package com.jinger; import java.util.*;
public class Initial {
public static void main(String[] args) { Car[] cars={ new PassageCar("奥迪A4",4,500), new PassageCar("马自达6",4,400), new Pickup("皮卡雪6",4,2,450), new PassageCar("金龙",20,800), new Truck("松花江",4,400), new Truck("依维柯",20,1000)};
System.out.println("****欢迎使用达达租车系统!****"); System.out.println("****您确认租车吗?****"+"\n"+"是(请输入1) \t 否(请输入2)"); Scanner in1=new Scanner(System.in); int is=in1.nextInt(); if(is!=1){ System.out.println("****欢迎下次光临!****"); System.exit(0); } if(is==1){ System.out.println("****您可租车的类型及价目表****"); System.out.println("序号"+"\t车名"+"\t载客数(人)"+"\t载货量(吨)"+"\t日租金(元/天)"); for(int i=0;i<cars.length;i++){ System.out.println((i+1)+"\t"+cars[i]); } System.out.println("****请输入您的租车数量:****"); int num1=in1.nextInt(); Car[] rentcar=new Car[num1]; int price=0; int totalpeople=0; int totalloads=0; for(int i=0;i<num1;i++){ System.out.println("****请输入第"+(i+1)+"辆车的序号:****"); int numx=in1.nextInt(); rentcar[i]=cars[numx-1]; } System.out.println("****请输入天数:****"); int day=in1.nextInt(); for(int i=0;i<num1;i++){ price=price+rentcar[i].rent *day; } System.out.println("****您的账单:****"); System.out.println("已选载人车:"); for(int i=0;i<num1;i++){ if(rentcar[i].people!=0){ System.out.println(rentcar[i].name+"\t"); } totalpeople=totalpeople+rentcar[i].people; } System.out.println('\n'); System.out.println("已选载货车:"); for(int i=0;i<num1;i++){ if(rentcar[i].loads!=0){ System.out.println(rentcar[i].name+"\t"); } totalloads=totalloads+rentcar[i].loads; } System.out.println('\n'); System.out.println("共载客:"+totalpeople+"人"); System.out.println("共载货:"+totalloads+"吨"); System.out.println("租车总价格:"+price+"元"); System.out.println('\n'); System.out.println("****感谢您的惠顾,欢迎再次光临!****"); } } }
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收获
思路决定编码。
编程要注重自顶而下、逐步求精
的设计方法。
源程序下载
https://github.com/hubojing/Car-rental-system