终于写完了，达达租车系统，欢迎各位讨论！
Car类
package com.dadacar;
public class Car {
private int number;//车辆编号
private String name;//车名
private double price;//租金
public Car(int number,String name ,double price) {
this.number=number;
this.name = name;
this.price = price;
}
public int getNumber()
{
return number;
}
public String getName()
{
return name;
}
public double getPrice()
{
return price;
}
public String toString()
{
return "车辆序号: "+number+'\t'+"车型: "+name+'\t'+"租金: "+price+'元'+'\t'+'\t';
}
}
passengerCar类
package com.dadacar;
public class passengerCar extends Car {
private int persons;//载人量
public passengerCar(int number,String name, double price, int persons) {
super(number,name, price);
this.persons=persons;
}
public int getPersons()
{
return persons;
}
public String toString()
{
return super.toString()+"载客量: "+persons+'人';
}
}
pickCar类
package com.dadacar;
public class pickCar extends Car{
private int persons;
private double Capacity;
public pickCar(int number,String name, double price,double pickCapacity,int pickPersons) {
super(number,name, price);
// TODO Auto-generated constructor stub
this.Capacity=pickCapacity;
this.persons=pickPersons;
}
public int getPersons() {
return persons;
}
public double getCapacity() {
return Capacity;
}
public String toString()
{
return super.toString()+"载客量:"+Capacity+'吨'+'\t'+"载客量:"+persons+'人';
}
}
TruckCar类
package com.dadacar;
public class TruckCar extends Car {
private double Capacity;//载货量
public TruckCar(int number,String name,double price,double cargoCapacity)
{
super(number,name,price);
this.Capacity = cargoCapacity;
}
public double getCapacity() {
return Capacity;
}
public String toString()
{
return super.toString()+"载货量:"+'\t'+Capacity+'吨';
}
}
test类
package com.dadacar;
import java.lang.System;
import java.util.Scanner;
public class test {
public static void main(String[] args) {
// TODO Auto-generated method stub
Car[] cars = new Car[5];
cars[0]=new TruckCar(1,"重型卡车 ",460,4.5);
cars[1]=new TruckCar(2,"轻型卡车 ",300,3.5);
cars[2]=new passengerCar(3,"大客车",500,45);
cars[3]=new passengerCar(4,"小客车",400,30);
cars[4]=new pickCar(5,"皮卡",450,3.5,6);
System.out.println("欢迎使用嗒嗒租车系统: ");
System.out.println("请问您是否要租车? 1.是 2.否");
Scanner s = new Scanner(System.in);
int yn =s.nextInt();
if(yn==1) {
/*显示车辆类型*/
System.out.println("您可租车的类型及其价目表:");
System.out.println("序号" + '\t' + "汽车名称" + '\t' + "租金" + '\t' +"容量"+'\t');
for(Car c :cars)
System.out.println(c.toString());
double totalprice=0;//总金额
double totalPersons = 0;//总载客量
double totalCapicity=0;//总载物量
System.out.println("请输入你要租车的数量: ");
int sl=s.nextInt();
Car[] rentCar = new Car[sl];
for (int i = 0; i < sl; i++) {
System.out.printf("请输入第%d辆车的序号：",i+1);
int num=s.nextInt();//捕捉用户输入车的序号并存入数组
rentCar[i]=cars[num-1];
}
/*计算总人数和总载客量*/
for(int i=0; i<sl;i++)
{
if(rentCar[i] instanceof passengerCar) {
totalPersons += ((passengerCar)rentCar[i]).getPersons();
}
if(rentCar[i] instanceof TruckCar) {
totalCapicity+=((TruckCar)rentCar[i]).getCapacity();
}
if(rentCar[i] instanceof pickCar) {
totalPersons+=((pickCar)rentCar[i]).getPersons();
totalCapicity+=((pickCar)rentCar[i]).getCapacity();
}
}
/*计算总金额*/
System.out.println("请输入租车的天数: ");
int days=s.nextInt();
for(int i=0;i<sl;i++) {
totalprice=totalprice+rentCar[i].getPrice()*days;
}
/*显示账单*/
System.out.println("********************您的账单如下:******************** ");
System.out.println(">>>>>>>已经选择载人车: ");
for(int i=0;i<sl;i++) {
if(rentCar[i].getNumber()>2) {
System.out.println(rentCar[i].getName());
}else {
continue;
}
}
System.out.println(">>>>>>>已经选择载货车: ");
for(int i=0;i<sl;i++) {
if(rentCar[i].getNumber()<=2) {
System.out.println(rentCar[i].getName());
}else {
continue;
}
}
System.out.println("******************************************************");
System.out.println("您所租借的车总载客量为: "+totalPersons+"人\t");
System.out.println("您所租借的车总载货量为: "+totalCapicity+"吨\t");
System.out.println("总费用为"+totalprice+"元");
}else if(yn==0) {
s.close();
}
}
}
生成图
欢迎大家给出优化意见。
处理输入错误
