Java学习笔记（四）——好记性不如烂键盘（答答租车）

根据所学知识，编写一个控制台版的租车系统。 
功能： 
1、 展示所有可租车辆 
2、 选择车型、租车辆 
3、 展示租车清单，包含：总金额、总载货量及其车型、总载人量及其车型

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代码参考imooc中Java课程Demo编写

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父类Car：

package com.RentCar;

public class Car {
    String name;
    int money;
    int people;
    int goods;
    public String getName() {
        return name;
        }
    public int getMoney() {
        return money;
        }
    public int getPeople() {
        return people;
        }
    public int getGoods() {
        return goods;
        }

}

　　

Car 的子类——载人汽车CarPeople：

package com.RentCar;

public class CarPeople extends Car{
    String name;
    int money;
    int people;
    public CarPeople(String name,int money,int people){
        this.name = name;
        this.money = money;
        this.people = people;
        }
    @Override
    public String toString() {
        return this.name + "" + this.money + this.people;
        }
    public String getName() {
        return name;
        }
    public int getMoney() {
        return money;
        }
    public int getPeople() {
        return people;
        }
}

　　

Car 的子类——载货汽车CarGoods：

package com.RentCar;

public class CarGoods extends Car {
    String name;
    int money;
    int goods;
    public CarGoods(String name,int money,int goods){
        this.name = name;
        this.money = money;
        this.goods = goods;
        }
    @Override
    public String toString() {
        return this.name + this.money + this.goods;
        }
    public String getName() {
        return name;
        }
    public int getMoney() {
        return money;
        }
    public int getGoods() {
        return goods;
        }
}

　　

Car 的子类——载人载货CarAll：

package com.RentCar;

public class CarAll extends Car {
    String name;
    int money;
    int people;
    int goods;
    public CarAll(String name,int money,int people,int goods){
        this.name = name;
        this.money = money;
        this.people = people;
        this.goods = goods;
        }
    @Override
    public String toString() {
        return this.name + this.money + this.people + this.goods;
        }
    public String getName() {
        return name;
        }
    public int getMoney() {
        return money;
        }
    public int getPeople() {
        return people;
        }
    public int getGoods() {
        return goods;
        }
}

　　

主函数：

package com.RentCar;
import java.util.Scanner; 

public class CarRentingSystem {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        while (true) {
            System.out.println("你到底要不要租虎哥的车？（租/不租）");
            Scanner scanner = new Scanner(System.in);
            String input = scanner.next();
            if(input.equals("租")){
                Car[] cars = {new CarPeople("奥迪A4",400,4),new CarPeople("马自达",400,4),new CarAll("皮卡6",450,4,20), new CarPeople("金龙",800,20), new CarGoods("松花江",400,4),new CarGoods("依维柯",1000,20)
                        };
                System.out.println("下面是您能租的车：");
                System.out.println("序号 品牌 价格 载人/货量");
                for(int i = 0;i < cars.length;i++){
                    System.out.printf("%-3d %-6s% 6d %3d个人，%d吨货",i+1,cars[i].getName(),cars[i].getMoney(),cars[i].getPeople(),cars[i].getGoods());
                    }
                System.out.println("你想要租几辆啊：");
                int number = scanner.nextInt();
                Car[] chooseCars = new Car[number];
                Car[] chooseCarsPeople = new Car[number];
                int CCPNum = 0;//选择的载人汽车的数目
                Car[] chooseCarsGoods = new Car[number];
                int CCGNum = 0;//选择的载货汽车的数目
                //定义总共的钱数，载客量，载货量
                int money = 0;
                int people = 0;
                int goods = 0;
                for(int i = 0,j = 1;i < number;i++,j++){
                    System.out.println("请输入第" + j + "辆车的序号：");
                    int carNum = scanner.nextInt() - 1;
                    try { chooseCars[i] = cars[carNum];
                    money += chooseCars[i].getMoney();
                    people += chooseCars[i].getPeople();
                    goods += chooseCars[i].getGoods();
                    if(chooseCars[i].getPeople() != 0){
                        chooseCarsPeople[CCPNum] = chooseCars[i]; CCPNum++;
                        }
                    if(chooseCars[i].getGoods() != 0){
                        chooseCarsGoods[CCGNum] = chooseCars[i]; CCGNum++;
                        }
                    }
                    catch (Exception e) {
                        System.out.println("说了几遍了，输入1~6的序号！\n"); i--; j--;
                        }
                    }
                System.out.println("你想要租几天啊：");
                int dayNum = scanner.nextInt();
                System.out.printf("你一共花了：%d元\n您总共租了%d辆车，租赁%d天\n",money*dayNum,number,dayNum);
                System.out.println("其中，载人的车有" + CCPNum + "辆");
                try { for(Car CarsPeople:chooseCarsPeople){
                    System.out.println(CarsPeople.getName());
                    }
                }
                catch (Exception e) { 

                }
                System.out.printf("总载客量：%d人\n",people*dayNum);
                System.out.println("载货的车有" + CCGNum + "辆");
                try { for(Car CarsGoods:chooseCarsGoods){
                    System.out.println(CarsGoods.getName());
                    }
                }
                catch (Exception e) { }
                System.out.printf("总载货量：%d吨\n",goods*dayNum);
                break;
                }
            else if(input.equals("不租")){
                System.out.println("不租你过来干嘛！");
                break;
                }
            else {
                System.out.println("你输错了大兄弟！\n");
                }
            }
        System.out.println("慢走不送！");
            }
    }