哒哒租车系统 代码简洁版

首先创建一个父类 Car

//Car 类
public abstract class Car {
    private int price;//车的租金
    private String name;//车的名称
    private int passengerLoad; //载客人数
    private double goodsLoad;//载货数量

    public int getPrice() {
        return price;
    }
    public void setPrice(int rent) {
        this.price = rent;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getPassengerLoad() {
        return passengerLoad;
    }
    public void setPassengerLoad(int passengerLoad) {
        this.passengerLoad = passengerLoad;
    }
    public double getGoodsLoad() {
        return goodsLoad;
    }
    public void setGoodsLoad(double goodsLoad) {
        this.goodsLoad = goodsLoad;
    }

}

然后创建 三种子类（只载人 只载货 既载人又载货）

//只载人的 KeCar类
public class KeCar extends Car {
      public KeCar(String name ,int price,int  passengerLoad){
        this.setPrice(price);
        this.setName(name);
        this.setPassengerLoad(passengerLoad);
        }

    public String toString() { 
        return  this.getName()+"----"+this.getPrice()+"元/天---- 载客"+this.getPassengerLoad()+"人"; }
}

//只载客的 Truck类
public class Truck extends Car {

    public Truck( String name,int price ,int goodsLoad){
        this.setPrice(price);
        this.setName(name);
        this.setGoodsLoad(goodsLoad);
    }
    public String toString() { 

        return this.getName()+"----"+this.getPrice()+"元/天---- 载货"+this.getGoodsLoad()+"吨"; }

}

//既载客又载人的 BothCarry类
public class BothCarry extends Car {
    public BothCarry(String name,int price,int passengerLoad,double goodsLoad){
        this.setName(name);
        this.setPrice(price);
        this.setPassengerLoad(passengerLoad);
        this.setGoodsLoad(goodsLoad);
        }
    public String toString() { 
        return this.getName()+"----"+this.getPrice()+"元/天---- 载客"+this.getPassengerLoad()+"人/载货"+this.getGoodsLoad()+"吨"; }

}

最后就是测试类 Test

import java.util.Arrays;
import java.util.Scanner;
public class Test {

    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("***************欢迎使用滴滴租车系统***************");
        System.out.println();
        System.out.println("*******租车请按 （1）     退出请按（0）*******");
        int num=sc.nextInt();
        Car[] cars={new KeCar("奥迪A4",300,4),
                    new KeCar("雪佛兰5",250,4),
                    new KeCar("宝骏巴士",800,45),
                    new Truck("东风Rl",1000,10),
                    new Truck("依维柯S",1500,25),
                    new BothCarry("皮卡雪Z",600,2,5)};
        if(num!=1){
            System.out.println("****欢迎下次光临****");
            System.exit(0);
        }else{
            for(int i=1;i<=cars.length;i++){
                System.out.println("序号"+i+"——————————-"+cars[i-1]);
            }
        }
        System.out.println("请输入你要预定的数量");
         int a=sc.nextInt();
         int priceSum=0;//价格总量
         double goodsLoadSum=0;//载货总量
         int passengerLoadSum=0;//载客总量
        for(int i=1;i<=a;i++){
            System.out.println("请输入第"+i+"辆要预定车辆的序号");
            int on=sc.nextInt();
              passengerLoadSum=passengerLoadSum+cars[i-1].getPassengerLoad();
             goodsLoadSum=goodsLoadSum+cars[i-1].getGoodsLoad();
             priceSum=priceSum+cars[i-1].getPrice();
            }
        System.out.println("一共需要"+priceSum+"元/天"+"     "+"共载货量："+goodsLoadSum+"吨     "+"共载客量："+ passengerLoadSum+"人");
        System.out.println("************************谢谢惠顾！");

    }

}