答答租车系统

//创建一个父类
public class Car {
String name;//车名
int rent;//租金
int manned;//载人量
int light;//载货量
}

//创建一个子类1
public class lightCar extends Car {
//创建有参构造器
public lightCar(String name,int rent,int light){
this.name=name;//车名
this.rent=rent;//租金
this.light=light;//载货量
}

}

//创建一个子类2
public class personCar extends Car {
//创建有参构造器
public personCar(String name,int rent,int manned){
this.name=name;//车名
this.rent=rent;//租金
this.manned=manned;//载人量

}

}

//创建一个子类3
public class lightCar extends Car {
//创建有参构造器
public lightCar(String name,int rent,int light){
this.name=name;//车名
this.rent=rent;//租金
this.light=light;//载货量
}

}

//创建一个子类4
public class pickCar extends Car {
//创建有参构造器
public pickCar(String name,int rent,int manned,int light){
this.name=name;//车名
this.rent=rent;//租金
this.manned=manned;//载人量
this.light=light;//载货量
}

}

//创建一个测试类

import java.util.Scanner;

public class Test {

public static void main(String[] args) {
    personCar car1=new personCar("奥迪A4", 500, 5);
    personCar car2=new personCar("马自达", 400, 5);
    personCar car3=new personCar("金龙", 800, 20);
    lightCar car4=new lightCar("松花江",450,2);
    lightCar car5=new lightCar("依维柯",450,20);
    pickCar car6=new pickCar("皮卡雪",600,2,2);
    System.out.println("欢迎来到答答租车");
    System.out.println("租车请输入1，退出系统请输入0");

    Scanner input = new Scanner(System.in); 
    boolean b=true;
    while (b) {
    int num=input.nextInt();

    switch (num) {

    case 1:
        System.out.println("您可选车辆类型");
        System.out.println("请选择车辆序号");
        System.out.println("序号/t车名/t租金/t载人量/t载货量");
        System.out.println("1\t"+car1.name+"\t"+car1.rent+"元/天\t"+car1.manned+"人\t");
        System.out.println("2\t"+car2.name+"\t"+car2.rent+"元/天\t"+car2.manned+"人\t");
        System.out.println("3\t"+car3.name+"\t"+car3.rent+"元/天\t"+car3.manned+"人\t");
        System.out.println("4\t"+car4.name+"\t"+car4.rent+"元/天\t"+0+"人\t"+car4.light+"吨\t");
        System.out.println("5\t"+car5.name+"\t"+car5.rent+"元/天\t"+0+"人\t"+car5.light+"吨\t");
        System.out.println("6\t"+car6.name+"\t"+car6.rent+"元/天\t"+car6.manned+"人\t"+car6.light+"吨\t");

        System.out.println("请选择租车数量");

        int sum=input.nextInt();
        int rent=0;
        int manned=0;
        int light=0;
        String name1="";//载人车名
        String name2="";//载货车名
        String name3="";//载人/货车名
        for(int i=1;i<=sum;i++){
            System.out.println("请输入第"+i+"辆车的序号");
            int score = input.nextInt();//租车序号
            switch(score){
            case 1:
                name1+=car1.name;
                rent += car1. rent;
                manned += car1.manned;
                break;
            case 2:
                name1+=car2.name;
                rent += car2.rent;
                manned += car2.manned;
                break;
            case 3:
                name1+=car3.name;
                rent += car3. rent;
                manned += car3.manned;
                break;
            case 4:
                name2+=car4.name;
                rent += car4. rent;
                light += car4.light;
                break;
            case 5:
                name2+=car5.name;
                rent += car5. rent;
                light += car5.light;
                break;
            case 6:
                name3+=car6.name;
                rent += car6. rent;
                manned += car6.manned;
                light += car6.light;
                break;
            }
        }
        System.out.println("请输入租车天数");
        int day = input.nextInt();//租车天数
        System.out.println("您的账单：");
        System.out.println("载人车："+name1);
        System.out.println("载货车："+name2);
        System.out.println("皮卡车："+name3);
        System.out.println("租金："+rent*day+"元\t载货："+light+"吨\t载人："+manned+"人");
    break;

    case 0:
        System.out.println("退出系统");
        b=false;

    default:
        System.out.println("输入错误,请提示输入");
        continue;
        }
    }
}

}

车辆类型数量还没写好