答答租车系统代码，如有错误，还望指点一二

输入代码
父类：
package com.car;

public  class Car {

    public String name;//车名字
    public int pice;//租一天的价格
    public int capacity;//载几人

    public void getList(){

    }

    public int getCapacity() {
        return capacity;
    }
    public void setCapacity(int capacity) {
        this.capacity = capacity;
    }
    public int volume;//容量大小（载多重）

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getPice() {
        return pice;
    }
    public void setPice(int pice) {
        this.pice = pice;
    }
    public int getVolume() {
        return volume;
    }
    public void setVolume(int volume) {
        this.volume = volume;
    }

}
载人车：
package com.car;

public class Dolly extends Car{

    public Dolly(String newName,int newPice,int newCapacity){

        this.setName(newName);
        this.setPice(newPice);
        this.setCapacity(newCapacity);

    }

    public void getList(){
        System.out.println(getName()+"  "+getPice()+"/天"+"     "+getCapacity()+"人");
    }

}
载货车：
package com.car;

public class Truck extends Car{

    public Truck(String newName,int newPice,int newVolume){

        this.setName(newName);
        this.setPice(newPice);
        this.setVolume(newVolume);

    }

    public void getList(){
        System.out.println(getName()+"  "+getPice()+"/天"+"     "+getVolume()+"吨");
    }
}
皮卡车：
package com.car;

public class Pickup extends Car {

    public Pickup(String newName,int newPice,int newCapacity,int newVolume){

        this.setName(newName);
        this.setPice(newPice);
        this.setCapacity(newCapacity);
        this.setVolume(newVolume);

    }
    public void getList(){
        System.out.println(getName()+"  "+getPice()+"/天"+"      "+getCapacity()+"人 "+" "+getVolume()+"吨");
    }
}
测试类：
package com.car;

import java.util.Scanner;

public class Master {

    public static void main(String[] args) {
        Car[] car = {new Dolly("奥迪A4",500,4),new Dolly("马自达6",400,4),
                new Pickup("皮卡雪",450,4,2),new Dolly("金龙",800,20),
                new Truck("松花江",800,4),new Truck("依维柯",1000,20)};

        Scanner input = new Scanner(System.in);
        System.out.println("欢迎使用dada租车系统");

        System.out.println("您是否要租车：1 是，0 不是");
        int choose = input.nextInt();
        if (choose==1){

            System.out.println("您可租用车的类型及其价目表：");

            System.out.println("序号   "+"汽车名称"+"  租用价格(/天)"+"  容量");
            for(int i=0;i<car.length;i++ ){
                System.out.print(i+1+"  ");
                car[i].getList();

                }

            System.out.println("请输入您要租用车的数量：");
            int number = input.nextInt();

            int a=0,b=0,c=0,d=0,e=0,f=0;
            for(int j=1;j<=number;j++){
                System.out.println("请输入第"+j+"辆车的序号：");
                 int order = input.nextInt();
                 if(order==1){
                     a=a+1;
                 }
                 if(order==2){
                     b=b+1;
                 }
                 if(order==3){
                     c=c+1;
                 }
                 if(order==4){
                     d=d+1;
                 }
                 if(order==5){
                     e=e+1;
                 }      
                 if(order==6){
                     f=f+1;
                 }

            }
            int totalCopacity=car[0].getCapacity()*a+car[1].getCapacity()*b+car[2].getCapacity()*c+car[3].getCapacity()*d;
            int totalVolume=car[2].getVolume()*c+car[4].getVolume()*e+car[5].getVolume()*f;
            int totalPice=car[0].getPice()*a+car[1].getPice()*b+car[2].getPice()*c+car[3].getPice()*d+car[4].getPice()*e+car[5].getPice()*f;

            System.out.println("请输入租用天数：");
            int days = input.nextInt();

            System.out.println("您的账单：");
            System.out.println("===可载人的车有：");           

            if(a!=0){
                System.out.print(car[0].getName()+"\t");

            }
            if(b!=0){
                System.out.print(car[1].getName()+"\t");

            }
            if(c!=0){
                System.out.print(car[2].getName()+"\t");

            }
            if(d!=0){
                System.out.print(car[3].getName()+"\t");

            }

           System.out.println("总载人数:"+totalCopacity);

           System.out.println("可载货的车有：");
           if(c!=0){
                System.out.print(car[2].getName()+"\t");

            }
           if(e!=0){
                System.out.print(car[4].getName()+"\t");

            }
            if(f!=0){
                System.out.print(car[5].getName()+"\t");

            }
            System.out.println("总载货量为："+totalVolume+"\t");
            System.out.println("租车总价格："+totalPice*days+"元");            

        }else{
            System.out.println("感谢您的到访");
        }
    }

}