/定义一个父元素/
package com.imooc;
//定义一个父类元素
public class Car {
public String Carname;//定义车辆名称
public float Price;//定义车辆价格
public int PeopleNumber;//容纳人的数量
public float Height;//货物数量

}

/定义三个子类元素/
package com.imooc;

public class keche extends Car {
public keche(String Carname,float Price,int PeopleNumber ){
this.Carname = Carname;
this.Price = Price;
this.PeopleNumber = PeopleNumber;
}
//定义一个输出方法
public String toString(){
return ("t"+Carname+"t" + Price+"tt" + PeopleNumber+"人");
}

}
package com.imooc;

public class huoche extends Car {
public huoche(String Carname,float Price,float Height){

    this.Carname = Carname;
    this.Price = Price;
    this.Height = Height;
}
//定义一个输出方法
public String toString(){
    return ("t"+Carname +"t"+ Price +"tt"+ Height+"吨");
}

}
package com.imooc;

public class pika extends Car {
public pika(String Carname,float Price,int PeopleNumber,float Height){
this.Carname = Carname;
this.Price = Price;
this.PeopleNumber = PeopleNumber;
this.Height = Height;
}
//定义一个输出方法
public String toString(){
return ("t"+Carname +"t"+ Price+"tt" + PeopleNumber+"人" + Height+"吨");
}

}

/主函数/
package com.imooc;

import java.util.Scanner;

public class Test {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    Car car[] =new Car[]{
            new keche("奥迪A4",500,4),
            new keche("马自达6",400,4), 
            new keche("金龙",800,20), 
            new huoche("松花江",400,4), 
            new huoche("依维柯",1000,20), 
            new pika("皮卡雪",450,4,2) 
            };
    System.out.println("/*********欢迎来到答答租车系统**********/");
    System.out.println("/*********请问是否需要租车***********/");
    System.out.println("/***********是（1）  否（2）*********/");
    Scanner in1 = new Scanner(System.in);

    if( in1.nextInt() == 1){
        System.out.println("欢迎选择答答租车，请选择车型");
        System.out.println("序号t车型t价格（元/天）t容纳量");
        for(int i=0;i

}
/部分代码参考了其他慕友的写法/