java第二季--答答租车系统详解

     虽然已经有了那么多的答答租车系统的文章，但还是决定写一写，算是对自己的总结吧~ 强行利用了抽象类和接口（并不确定用的好不好~），求指点。
    首先，一个抽象类Cars：

public abstract class Cars implements ShowCar{
    private String name;//汽车名
    private double money;//租金
    private int person;//载客量
    private double weight;//载货量
    private int number;//序号
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public double getMoney() {
        return money;
    }
    public void setMoney(double money) {
        this.money = money;
    }
    public int getPerson() {
        return person;
    }
    public void setPerson(int person) {
        this.person = person;
    }
    public double getWeight() {
        return weight;
    }
    public void setWeight(double weight) {
        this.weight = weight;
    }
    public int getNumber() {
        return number;
    }
    public void setNumber(int number) {
        this.number = number;
    }
}

    为了熟悉接口而强行使用的接口类ShowCar

package com.imooc;

public interface ShowCar {
    public void show();
}

    然后3个不同的汽车类型：

public class Bus extends Cars implements ShowCar{
    //创建载人汽车列表
    public Bus(int number,String name,double money,int person){
        this.setMoney(money);
        this.setName(name);
        this.setNumber(number);
        this.setPerson(person);
    }
    public void show(){
        System.out.println(getNumber()+"\t"+getName()+"\t"+getMoney()+"\t"+"载人："+getPerson());
    }
}

public class Larry extends Cars implements ShowCar{
    public Larry(int number,String name,double money,double weight){
        this.setName(name);
        this.setMoney(money);
        this.setWeight(weight);
        this.setNumber(number);
    }
    public void show(){
        System.out.println(getNumber()+"\t"+getName()+"\t"+getMoney()+"\t"+"载货："+getWeight()+"吨");
    }
}

public class Picars extends Cars implements ShowCar{
    public Picars(int number,String name,double money,int person,double weight){
        this.setNumber(number);
        this.setName(name);
        this.setMoney(money);
        this.setPerson(person);
        this.setWeight(weight);
    }
    public void show(){
        System.out.println(getNumber()+"\t"+getName()+"\t"+getMoney()+"\t"+"载人："+getPerson()+"载货："+getWeight()+"吨");
    }
}

最后测试类

import java.util.Scanner;

public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //定义车
        Cars[] cars={
                new Bus(1,"奥迪A4",500,4),
                new Bus(2,"马自达6",400,4),
                new Picars(3,"皮卡雪6",450,4,2),
                new Bus(4,"金龙\t",800,20),
                new Larry(5,"松花江",400,4),
                new Larry(6,"依维柯",1000,20),
        };
        //程序开始
        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 in=new Scanner(System.in);
        int a=in.nextInt();
        if(a==1){
            System.out.println("您可租车的类型和价格表：");
            System.out.println("序号\t汽车名称\t租金\t\t容量");
            for(int i=0;i<cars.length;i++){
                cars[i].show();
            }
            System.out.println("请输入您要租几辆车？");
            int n=in.nextInt();
            int[] carn=new int[n];
            for(int i=0;i<n;i++){
                System.out.println("请输入第"+(i+1)+"辆车的序号：");
                carn[i]=in.nextInt();
            }
            System.out.println("请输入租车天数：");
            int day=in.nextInt();
            int sump=0;   //计算人数
            int sumw=0;  //计算货物重量
            int sumy=0;//计算租金
            //计算账单
            System.out.println("***可载人的车有：");
            for(int i=0;i<carn.length;i++){
                if(cars[carn[i]-1].getPerson()!=0)
                System.out.print(cars[carn[i]-1].getName()+"\t");
                sump+=cars[carn[i]-1].getPerson();
            }
            System.out.println("共载人："+sump);
            System.out.println("***在货的车有：");
            for(int i=0;i<carn.length;i++){
                //没有为bus的getWeight赋值,默认为0
                if(cars[carn[i]-1].getWeight()!=0)
                System.out.print(cars[carn[i]-1].getName()+"\t");
                sumw+=cars[carn[i]-1].getWeight();
            }
            System.out.println("共载货："+sumw+"吨");
            for(int i=0;i<carn.length;i++){
                sumy+=cars[carn[i]-1].getMoney();
            }
            System.out.println("租车总价格："+day*sumy+"元");
        }
    in.close();
    }

}

执行结果：