Java入门第二季-达达租车

达达租车
一共5个class文件,我就直接全部贴出来,注释全在里面.
包名叫ddcar,不要在意我的变量名方法名 (〃＞-＜)
注意有bug:只能输入整型数据,不然就崩溃了(第三季有教如何解决该bug)
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首先是运行效果:
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第一个class文件,取名：Run.class

package ddcar;
import java.util.Scanner;
public class Run {
    private static int a,b;//变量a用于判断是否租车,b用于判断租车数量  
    static Scanner input = new Scanner(System.in);
    static int cartypeTotal=6;          //车型总数
    static int carTotal=0;              //用于保存全部一共的车数
    static int[] carType = new int[cartypeTotal];   //用于记录每种类型车租的数量
    static int aMoney=0;                //用于记录一天的钱数
    /*下面利用 数组+多态 创建每一种类型的车
     * 客车参数:"名字",价格,人容量,数量
     * 卡车参数:"名字",价格,货容量,数量
     * 皮卡参数:"名字",价格,人容量,货容量,数量*/
    static Car[] car = {new Passenger_car("奥迪A4",500,4,0),  new Passenger_car("马自达",400,4,1),
                        new Pickup("皮卡雪6",450,4,2,2),       new Passenger_car("金龙",800,20,3),
                        new Truck("松花江",400,4,4),           new Truck("依维柯",998,20,5)};

    public static void main(String[] args) {        //main函数
        System.out.println("欢迎使用达达租车");         //欢迎语
        isNeeded();                                 //询问是否租车
        if(a==0) {System.out.println("请您自己退出程序");} //不使用则结束
        else {                  //使用则正式运行租车系统
            displayList();              //显示车辆列表
            howMany();              //询问租多少车
            carNum();               //车型选择
            rentDay();              //借租天数并计帐
        }
    }

    private static void isNeeded(){
        System.out.print("您是否需要租车[1是 0否]:");    
        do {
            a = input.nextInt();    //do while循环,若输入的不是1或者0,则循环
            if(a!=0 && a!=1){
                System.out.print("您输入的值有误,请重新输入:");
            }
        }while(a!=1 && a!=0);    //若输入为0或1则跳出循环
    }

    private static void displayList(){
        System.out.println("您可租车的类型及其价目表如下:\n序号      汽车名称\t租金\t载人容量\t载货容量\t车型总量");                      
        for(int i=0;i<cartypeTotal;i++) {           //3种类型的车的列表文字输出方式不同
            if(car[i] instanceof Passenger_car) {   //判断实例所属的类
                System.out.println((i+1)+".   "+car[i].getName()+"\t"+car[i].getRent()+"元/天\t载人:"+car[i].getPeoplecapacity()+"人\t\t剩有"+car[i].getNum()+"辆");
            }
            else if(car[i] instanceof Truck) {
                System.out.println((i+1)+".   "+car[i].getName()+"\t"+car[i].getRent()+"元/天\t\t载货:"+car[i].getCapacity()+"吨\t剩有"+car[i].getNum()+"辆");
            }
            else if(car[i] instanceof Pickup) {
                System.out.println((i+1)+".   "+car[i].getName()+"\t"+car[i].getRent()+"元/天\t载人:"+car[i].getPeoplecapacity()+"人\t载货:"+car[i].getCapacity()+"吨\t剩有"+car[i].getNum()+"辆");
            }
        }
    }

    private static void howMany(){
        System.out.print("请确认要租赁车型数量:");
        for(int i=0;i<cartypeTotal;i++) {
            carTotal += car[i].getNum();            //计算一下 全部一共有多少辆车
            }
        do {b = input.nextInt();
            if(b>0&&b<=carTotal){continue;}
            System.out.print("您输入的数值有误,请重新输入:");
        }while(!(b>0&&b<=carTotal));
    }

    private static void carNum() {
        for(int n=0;n<cartypeTotal;n++) {carType[n]=0;}//把这个数组的值初始化为0
        for(int i=1;i<=b;i++) {
            System.out.print("请输入要租的第"+i+"辆车的序号:");
            int carcar;
            do {
                carcar = input.nextInt();
                if(!(carcar>=1&&carcar<=cartypeTotal)){
                    System.out.print("您输入的数值有误,请重新输入:");
                    continue;
                }
                else if(car[carcar-1].getNum() < 1){
                    System.out.print("很抱歉,该型号的车已被租空,请重新输入:");
                    carcar=0;
                    continue;
                }
                else {
                    car[carcar-1].setNum();
                    aMoney += car[carcar-1].getRent();//这个用于记录一天的所需要的钱数
                    carType[carcar-1]++;
                }
            }while(!(carcar>=1&&carcar<=cartypeTotal));
        }
    }

    private static void rentDay() {
        System.out.print("请输入要借租的天数:");
        int rentday;
        do {
            rentday = input.nextInt();
            if(!(rentday>=1&&rentday<=365)){
                System.out.print("您输入的数值有误,最多只能借365天,请重新输入:");
            }
        }while(!(rentday>=1&&rentday<=365));
        /************下面是账单计算*************/
        int renshu1=0,huoshu1=0,renshu2=0,huoshu2=0;//记录各类型车的总载人、载货数
        System.out.println("您的账单:");
        System.out.println("***客车有:");
        for(int i1=0;i1<cartypeTotal;i1++) {
            if(car[i1] instanceof Passenger_car && carType[i1]>0) {
                System.out.print(car[i1].getName()+"x"+carType[i1]+"\t");
                renshu1 += (carType[i1]*car[i1].getPeoplecapacity());}}
        System.out.println("\n共载人:"+renshu1+"人");
        System.out.println("***卡车有:");
        for(int i2=0;i2<cartypeTotal;i2++) {
            if(car[i2] instanceof Truck&&carType[i2]>0) {
                System.out.print(car[i2].getName()+"x"+carType[i2]+"\t");
                huoshu1 += (carType[i2]*car[i2].getCapacity());}}
        System.out.println("\n共载货:"+huoshu1+"吨");
        System.out.println("***皮卡有:");
        for(int i3=0;i3<cartypeTotal;i3++) {
            if(car[i3] instanceof Pickup&&carType[i3]>0) {
                System.out.print(car[i3].getName()+"x"+carType[i3]+"\t");
                renshu2 += (carType[i3]*car[i3].getPeoplecapacity());
                huoshu2 += (carType[i3]*car[i3].getCapacity());}}
        System.out.print("\n共载人:"+renshu2+"人");
        System.out.println("\n共载货:"+huoshu2+"吨");
        System.out.println("********");
        System.out.println("一共"+aMoney*rentday+"元");
        System.out.print("是否确认租车[1是 0否]:");
        int ok;
        do {
            ok = input.nextInt();
            if(ok!=0 && ok!=1){
                System.out.print("您输入的值有误,请重新输入:");
            }
        }while(ok!=1 && ok!=0);
        if(ok==1) {
            System.out.println("恭喜,您已成功租车！已经从您的账户中扣除"+aMoney*rentday+"元");
            System.out.println("这些车将会在两分钟内砸到您的家门口,请小心!");
            System.out.println("感谢您使用达达租车,再见!");
        }
        else {
            System.out.println("哦,其实你是付不起对吧?");
            System.out.println("感谢您使用达达租车,再见!");
        }
    }
}

第二个class文件,取名：Car.class,即父类class

package ddcar;

public class  Car {
    public String getName() {return "";}
    public int getRent() {return 0;}
    public int getPeoplecapacity() {return 0;}
    public int getCapacity() {return 0;}
    public int getNum() {return 0;}
    public void setName(String setName) {};
    public void setRent(int setRent) {};
    public void setPeoplecapacity(int setPeoplecapacity) {};
    public void setCapacity(int setCapacity) {};
    public void setNum() {};
}

第三个class文件,取名：Passenger_car.class,即子类客车class

package ddcar;

public class Passenger_car extends Car{
    private String name;
    private int rent;
    private int peoplecapacity;
    private int num;
    public Passenger_car(String name,int rent,int peoplecapacity,int num){
        this.name = name;
        this.rent =rent;
        this.peoplecapacity = peoplecapacity;
        this.num = num;
    }
    public String getName(){return name;}
    public int getRent() {return rent;}
    public int getPeoplecapacity(){return peoplecapacity;}
    public int getNum(){return num;}
    public void setName(String setName) {name = setName;}
    public void setRent(int setRent){rent = setRent;}
    public void setPeoplecapacity(int setPeoplecapacity){peoplecapacity = setPeoplecapacity;}
    public void setNum(){num--;}
}

第四个class文件,取名：Truck.class,即子类卡车class

package ddcar;

public class Truck extends Car{
    private String name;
    private int rent;
    private int capacity;
    private int num;
    public Truck(String name,int rent,int capacity,int num){
        this.name = name;
        this.rent =rent;
        this.capacity = capacity;
        this.num = num;
    }
    public String getName(){return name;}
    public int getRent() {return rent;}
    public int getCapacity(){return capacity;}
    public int getNum(){return num;}
    public void setName(String setName) {name = setName;}
    public void setRent(int setRent){rent = setRent;}
    public void setCapacity(int setCapacity){capacity = setCapacity;}
    public void setNum(){num--;}
}

第五个class文件,取名：Pickup.class,即子类皮卡class

package ddcar;

public class Pickup extends Car{
    private String name;
    private int rent;
    private int peoplecapacity;
    private int capacity;
    private int num;
    public Pickup(String name,int rent,int peoplecapacity,int capacity,int num){
        this.name = name;
        this.rent =rent;
        this.peoplecapacity = peoplecapacity;
        this.capacity = capacity;
        this.num = num;
    }
    public String getName(){return name;}
    public int getRent() {return rent;}
    public int getPeoplecapacity(){return peoplecapacity;}
    public int getCapacity(){return capacity;}
    public int getNum(){return num;}
    public void setName(String setName) {name = setName;}
    public void setRent(int setRent){rent = setRent;}
    public void setPeoplecapacity(int setPeoplecapacity){peoplecapacity = setPeoplecapacity;}
    public void setCapacity(int setCapacity){capacity = setCapacity;}
    public void setNum(){num--;}
}