iMooc-Java入门第二季达达租车系统

最近在跟着慕课网的java教程回顾和复习java，同时也在查漏补缺中对本科阶段的知识做一个小型的总结。
第二季的视频用了三天看完，大作业用了一个上午写完。看视频过程中学习了eclipse强大的生成(generalize)和改错功能。
对java的面向对象特性和控制台IO做了复习，也新学了ArrayList的功能，收获比较大。

先贴上大作业要求的输出。

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代码借鉴了来自以下网页的代码

http://www.imooc.com/article/16652%20%20%20Java
http://blog.csdn.net/Joseph_Cherry/article/details/60530978

• 主要思想是：建立一个Car父类，MotorCar是载人汽车子类，Truck是载货汽车子类，bothCar是皮卡（可载人也可载货）子类。用ArrayList存储各类车的名称、租金、容量。重写toString方法来解决输出各类车的信息价格表。

我的代码：

Car.java

package com.DADACar;
public class Car {
    public String name;
    public int price;
    
    public String getName() {
        return name;
    }
    public int getPrice() {
        return price;
    }
    public int getHumanNum() {
        // TODO Auto-generated method stub
        return 0;
    }
    public int getGoodsNum() {
        // TODO Auto-generated method stub
        return 0;
    }
}

motorCar.java

package com.DADACar;

public class motorCar extends Car {
    private int humanNum;
    
    public int getHumanNum() {
        return this.humanNum;
    }
    public motorCar(String name, int price, int humanNum){
        this.name=name;
        this.price=price;
        this.humanNum=humanNum;
    }
    public String toString(){
        return(name+"\t"+price+"元\\天    "+"载客量:"+humanNum+"人");
    }
}

trunckCar.java

package com.DADACar;
public class truckCar extends Car {
    private int goodsNum;

    public int getGoodsNum() {
        return this.goodsNum;
    }

    public truckCar(String name, int price, int goodsNum) {
        this.name=name;
        this.price=price;
        this.goodsNum=goodsNum;
        
    }
    public String toString(){
        return(name+"\t"+price+"元\\天    "+"载货量:"+goodsNum+"吨");
    }
}

bothCar.java

package com.DADACar;

public class bothCar extends Car {
    private int goodsNum;
    private int humanNum;
    public int getGoodsNum() {
        return this.goodsNum;
    }
    public int getHumanNum() {
        return this.humanNum;
    }
    public bothCar(String name, int price, int goodsNum, int humanNum){
        this.name=name;
        this.price=price;
        this.goodsNum=goodsNum;
        this.humanNum=humanNum;
    }
    
    public String toString(){
        return(name+"\t"+price+"元\\天\t"+"    载货量:"+goodsNum+"吨    载人量"+humanNum+"人");
    }
}

rentCarSystem.java //主函数在这里！！

package com.DADACar;

import java.util.ArrayList;
import java.util.Scanner;

public class rentCarSystem {
    
    
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("欢迎使用哒哒租车系统");
        System.out.println("您是否需要租车？ 1-是 0-否");
        Scanner statusScanner = new Scanner(System.in);
        String begin = statusScanner.next();
        //statusScanner.close();
        while(true){
        switch(begin){
        case "1":
            systemInfoPrint();
            break;
        case "0":
            System.out.println("谢谢使用本系统，再见！");
            System.exit(0);
            break;
        default:
            System.out.println("输入的值有误！");
            }
        }
    }
    public static void systemInfoPrint(){
        ArrayList carlist = new ArrayList(6);
        carlist.add(new motorCar("奥迪A4",500,4));
        carlist.add(new motorCar("马自达6",400,4));
        carlist.add(new bothCar("皮卡雪6",450,2,4)); //货量，人量
        carlist.add(new motorCar("金龙",800,20));
        carlist.add(new truckCar("松花江",400,4));
        carlist.add(new truckCar("依维柯",1000,20));
        
        System.out.println("可供租用的车型信息有：");
        System.out.println("******************************************");
        System.out.println("序号\t车型        单价            容量");
        for(int i = 0;i

• 另外值得注意的是

Scanner输入流如果close了，就会出现如下所示的NoSuchElementException错误。

>Exception in thread "main" [Java](http://lib.csdn.net/base/javase).util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:907)at java.util.Scanner.next(Scanner.java:1416)

csdn博客中有分析说注释掉close()那一行就不报错了