新建一个car类

package com.axhu;

public class Car {
    String name;
    int money;
    int personnum;
    int burden;
}
Burdencar类

package com.axhu;

public class Burdencar extends Car {
public Burdencar(String newname,int newmoney,int newburden){
this.name=newname;
this.money=newmoney;
this.burden=newburden;

}

}
Personcar类

package com.axhu;

public class Personcar extends Car {
    public Personcar(String newname,int newmoney,int newpersonnum){
        this.name=newname;
        this.money=newmoney;
        this.personnum=newpersonnum;

    }

}
BurdenPersoncar类

package com.axhu;

public class BurdenPersoncar extends Car {
public BurdenPersoncar(String newname,int newmoney,int newpersonnum,int newburden){
this.name=newname;
this.money=newmoney;
this.personnum=newpersonnum;
this.burden=newburden;

}

}
main Test类

package com.axhu;

import java.util.Scanner;

public class Test {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Personcar c1 = new Personcar("奥迪A4",500,4);
        Personcar c2 = new Personcar("马自达8",400,4);
        BurdenPersoncar c3 = new BurdenPersoncar("皮卡雪8",450,4,2);
        Personcar c4 = new Personcar("金龙",800,20);
        Burdencar c5 = new Burdencar("松花江",400,4);
        Burdencar c6 = new Burdencar("依维柯",1000,20);
        System.out.println("欢迎使用哒哒租车系统");
        System.out.println("你是否需要租车 1是 0否");
        Scanner input = new Scanner(System.in);
        int r = input.nextInt();
        if(r==1){
            System.out.println("你可能租车的类型以及价目表:");
            System.out.println("序号    汽车名称  租金  容量");
            System.out.println("1.\t"+c1.name+"\t"+c1.money+"元/天 "+"载人:"+c1.personnum+"人");
            System.out.println("2.\t"+c2.name+"\t"+c2.money+"元/天 "+"载人:"+c2.personnum+"人"); 
            System.out.println("3.\t"+c3.name+"\t"+c3.money+"元/天 "+"载人:"+c3.personnum+"人"+" 载货:"+c3.burden+"吨");
            System.out.println("4.\t"+c4.name+"\t"+c4.money+"元/天 "+"载人:"+c4.personnum+"人");
            System.out.println("5.\t"+c5.name+"\t"+c5.money+"元/天 "+"载货:"+c5.burden+"吨");
            System.out.println("6.\t"+c6.name+"\t"+c6.money+"元/天 "+"载货:"+c6.burden+"吨");
            System.out.println("请输入租车的数量");
            int quality = input.nextInt();
            int money=0;
            int burden=0;
            int personnum=0;
            String n1 ="";
            String n2 ="";
            for(int i=1;i<=quality;i++){
                System.out.println("请输入第"+i+"辆车的序号:");
                int num =input.nextInt();
                switch(num)
                {
                case 1:
                    n1+=c1.name;
                    money+=c1.money;
                    personnum+=c1.personnum;
                    break;

                case 2:
                    n1+=c2.name;
                    money+=c2.money;
                    personnum+=c2.personnum;
                    break;
                case 3:
                    n1+=c3.name;
                    n2+=c3.name;
                    money+=c3.money;
                    personnum+=c3.personnum;
                    burden+=c3.burden;
                    break;
                case 4:
                    n1+=c4.name;
                    money+=c4.money;
                    personnum+=c4.personnum;
                    break;
                case 5:
                    n2+=c5.name;
                    money+=c5.money;
                    burden+=c5.burden;
                    break;

                case 6:
                    n2+=c6.name;
                    money+=c6.money;
                    burden+=c6.burden;
                    break;
                }       
            }
            System.out.println("请输入租车的天数:");
            int days = input.nextInt();
            System.out.println("你的账单:");
            System.out.println("***你租载人的车有：***");
            System.out.println(n1+"一共载人的人数:"+personnum+"人");
            System.out.println("***你租载货的车有：***");
            System.out.println( n2+"一共载货数:"+burden+"吨");
            System.out.println("你的租车天数："+days);
            System.out.println("你租车的总费用为:"+days*money+"元");

        }
        else if(r==0){
            System.out.println("谢谢你的支持，欢迎下次光临！");

        }
        else{
            System.out.println("你输入的信息有误！请重新开始！");
        }
    }

}
结果截图
![图片描述][1]