答答租车，新人小白求大神指点还有没有需要改进的地方

Question

package rent;import java.util.Scanner;public class Test { public static void main(String[] args) { // TODO Auto-generated method stub Car[] carforrent=new Car[]{new Bus("奥迪A4",500,0,4),new Bus("马自达6",400,0,4),new Pickup("皮卡雪6",450,2,4), new Bus("金龙",800,0,20),new Truck("松花江",400,4,0),new Truck("依维柯",1000,20,0)}; System.out.println("欢迎使用答答租车系统："); System.out.println("您是否要租车：1是   0否"); Scanner input=new Scanner(System.in); int choice=input.nextInt(); if(choice==1){ System.out.println("您可租车的类型以及价目表："); System.out.println("序号\t汽车名称\t租金\t\t容量"); for(int i=0;i<carforrent.length;i++){ System.out.print((i+1)+"\t"+carforrent[i].getName()+"\t"+carforrent[i].getRent()+"元/天\t"); if(carforrent[i].getBusload()!=0) System.out.print("载人："+carforrent[i].getBusload()+"人  "); if(carforrent[i].getBurden()!=0) System.out.print("载货："+carforrent[i].getBurden()+"吨"); System.out.println(); } System.out.println("请输入您要租用汽车的数量："); Scanner input1=new Scanner(System.in); int num=input1.nextInt(); int [] carID=new int[num]; for(int i=0;i<num;i++){ int j=i+1; System.out.println("请输入第"+j+"辆车的序号："); Scanner input2=new Scanner(System.in); carID[i]=input2.nextInt(); } System.out.println("请输入租车天数："); Scanner input3=new Scanner(System.in); int days=input3.nextInt(); System.out.println("您的账单："); int sumofbusload=0; int sumofburden=0; double rents=0; System.out.println("***可载人的车有："); for(int i=0;i<num;i++){ if(carID[i]==1){ System.out.print(carforrent[0].getName()+"  "); sumofbusload+=carforrent[0].getBusload(); rents+=carforrent[0].getRent(); } else if(carID[i]==2){ System.out.print(carforrent[1].getName()+"  "); sumofbusload+=carforrent[1].getBusload(); rents+=carforrent[1].getRent(); } else if(carID[i]==3){ System.out.print(carforrent[2].getName()+"  "); sumofbusload+=carforrent[2].getBusload(); rents+=carforrent[2].getRent(); } else if(carID[i]==4){ System.out.print(carforrent[3].getName()+"  "); sumofbusload+=carforrent[3].getBusload(); rents+=carforrent[3].getRent(); } else continue; } System.out.println("共载人："+sumofbusload+"人"); System.out.println("***可载货的车有："); for(int i=0;i<num;i++){ if(carID[i]==3){ System.out.print(carforrent[2].getName()+"  "); sumofburden+=carforrent[2].getBurden(); } else if(carID[i]==5){ System.out.print(carforrent[4].getName()+"  "); sumofburden+=carforrent[4].getBurden(); rents+=carforrent[4].getRent(); } else if(carID[i]==6){ System.out.print(carforrent[5].getName()+"  "); sumofburden+=carforrent[5].getBurden(); rents+=carforrent[5].getRent(); } else continue; } System.out.println("共载货："+sumofburden+"吨"); System.out.println("***租车总价格："+rents*days); } else System.out.println("正退出答答租车系统");

Answer 1

你这套系统要实现什么，哪些实现不了，这样才好让大家解答