手记

作业-答答租车-据说标题不能低于10个字

sky4300670
2016-12-18 23:34:19浏览 3328

首先创建一个父类 car

public abstract class Car {
    public String name;// 车的名字
    public double cargo;// 车的载货量
    public int people;// 车的载客量
    public int rent;// 车的租金

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getCargo() {
        return cargo;
    }

    public void setCargo(double cargo) {
        this.cargo = cargo;
    }

    public int getPeople() {
        return people;
    }

    public void setPeople(int people) {
        this.people = people;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }
}

然后是子类 AoDiA4

public class AoDiA4 extends Car {
    int people;
    int rent;
    String name;

    public int getPeople() {
        return people;
    }

    public void setPeople(int people) {
        this.people = people;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public AoDiA4(String name, int rent, int people) {
        this.name = name;
        this.rent = rent;
        this.people = people;
    }
}

继续子类 MaZiDa6

public class MaZiDa6 extends Car {
    int people;
    int rent;
    String name;

    public int getPeople() {
        return people;
    }

    public void setPeople(int people) {
        this.people = people;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public MaZiDa6(String name, int rent, int people) {
        this.name = name;
        this.rent = rent;
        this.people = people;
    }
}

子类PiKaXue6

public class PiKaXue6 extends Car {
    int people;
    int rent;
    double cargo;
    String name;

    public int getPeople() {
        return people;
    }

    public void setPeople(int people) {
        this.people = people;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public double getCargo() {
        return cargo;
    }

    public void setCargo(int cargo) {
        this.cargo = cargo;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public PiKaXue6(String name, int rent, int people, int cargo) {
        this.name = name;
        this.rent = rent;
        this.people = people;
        this.cargo = cargo;
    }
}

子类JinLong

public class JinLong extends Car {
    int people;
    int rent;
    String name;

    public JinLong(String name, int rent, int people) {
        this.name = name;
        this.rent = rent;
        this.people = people;
    }

    public int getPeople() {
        return people;
    }

    public void setPeople(int people) {
        this.people = people;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

子类SongHuaJiang

public class SongHuaJiang extends Car {
    int rent;
    double cargo;
    String name;

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public double getCargo() {
        return cargo;
    }

    public void setCargo(int cargo) {
        this.cargo = cargo;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public SongHuaJiang(String name, int rent, int cargo) {
        this.name = name;
        this.rent = rent;
        this.cargo = cargo;
    }
}

子类 YiWeiKe

public class YiWeiKe extends Car {
    int rent;
    double cargo;
    String name;

    public YiWeiKe(String name, int rent, int cargo) {
        this.name = name;
        this.rent = rent;
        this.cargo = cargo;
    }

    public int getRent() {
        return rent;
    }

    public void setRent(int rent) {
        this.rent = rent;
    }

    public double getCargo() {
        return cargo;
    }

    public void setCargo(int cargo) {
        this.cargo = cargo;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

终于到main方法了。。

import java.util.Scanner;

public class Test {

     public static Car[] cars = { new AoDiA4("奥迪A4", 500, 4), new MaZiDa6("马自达6", 400, 4),new PiKaXue6("皮卡雪6", 450, 4, 2), new JinLong("金龙", 800, 20), new SongHuaJiang("松花江", 400, 4),new YiWeiKe("依维柯", 1000, 20) };// 创建所有车类的数组并赋于属性
    public static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        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");

        entrySystem();// 判断是否进入系统
        printCars();// 打印可租车列表
        int carNum = getCarNum();// 获取用户租车数量
        int[] carNums = getCarNums(carNum);// 获取用户租车的序号列表
        int days = getDays();// 获取用户租车时长
        detailedList(days, carNum, carNums);// 计算清单

    }

    public static void entrySystem() {
        for (;;) {
            int z = sc.nextInt();
            if (z != 0 & z != 1) {
                System.out.println("输入错误，请重新输入！");
                continue;
            } else if (z == 0) {
                System.out.println("感谢使用，再见！");
                System.exit(0);
            } else if (z == 1) {
                break;
            }
        }
    }

    public static void printCars() {
        System.out.println("您可租车的类型及其价目表:");
        System.out.println("序号\t汽车名称\t租金\t容量");
        int num = 1;
        for (Car newCar : cars) {// 对所有车进行一次循环遍历，既foreach(),来创建一个汽车一览表
            if (newCar instanceof AoDiA4) {// 判断正在遍历的car是否是奥迪A4类
                System.out.println(num + ".\t" + newCar.getName() + "\t" + newCar.getRent() + "元/天" + "\t" + "载人："+ newCar.getPeople() + "人");
                num++;
            }
            if (newCar instanceof MaZiDa6) {
                System.out.println(num + ".\t" + newCar.getName() + "\t" + newCar.getRent() + "元/天" + "\t" + "载人："+ newCar.getPeople() + "人");
                num++;
            }
            if (newCar instanceof PiKaXue6) {
                System.out.println(num + ".\t" + newCar.getName() + "\t" + newCar.getRent() + "元/天" + "\t" + "载人："+ newCar.getPeople() + "人,载货" + newCar.getCargo() + "吨");
                num++;
            }
            if (newCar instanceof JinLong) {
                System.out.println(num + ".\t" + newCar.getName() + "\t" + newCar.getRent() + "元/天" + "\t" + "载人："+ newCar.getPeople() + "人");
                num++;
            }
            if (newCar instanceof SongHuaJiang) {
                System.out.println(num + ".\t" + newCar.getName() + "\t" + newCar.getRent() + "元/天" + "\t" + "载货："+ newCar.getCargo() + "吨");
                num++;
            }
            if (newCar instanceof YiWeiKe) {
                System.out.println(num + ".\t" + newCar.getName() + "\t" + newCar.getRent() + "元/天" + "\t" + "载货："+ newCar.getCargo() + "吨");
                num++;
            }
        }
    }

    public static int getCarNum() {
        System.out.println("请输入要租汽车的数量:");
        return sc.nextInt();
    }

    public static int[] getCarNums(int carNum) {
        int[] arr = new int[carNum];
        int y = 0;
        for (int x = 1; x <= carNum; x++) {
            System.out.println("请输入第" + x + "辆车的序号:");
            arr[y] = sc.nextInt();
            y++;
        }
        return arr;
    }

    public static int getDays() {
        System.out.println("请输入租车的天数：");
        return sc.nextInt();
    }

    public static void detailedList(int Days, int num, int[] nums) {
        int people = 0;
        double cargo = 0;
        int rent = 0;
        System.out.println("您的账单：\n***可载人的车有:");
        for (int i = 0; i < nums.length; i++) {
            if ((cars[nums[i] - 1] instanceof AoDiA4) || (cars[nums[i] - 1] instanceof MaZiDa6) || (cars[nums[i] - 1] instanceof PiKaXue6) || (cars[nums[i] - 1] instanceof JinLong)) {
                System.out.print(cars[nums[i] - 1].getName() + "  ");
                people = people + cars[nums[i] - 1].getPeople();
            }
        }
        System.out.println("共可载人：" + people + "人！");
        System.out.println("***可载货的车有:");
        for (int i = 0; i < nums.length; i++) {
            if ((cars[nums[i] - 1] instanceof PiKaXue6) || (cars[nums[i] - 1] instanceof SongHuaJiang) || (cars[nums[i] - 1] instanceof YiWeiKe)) {
                System.out.print(cars[nums[i] - 1].getName() + "  ");
                cargo = cargo + cars[nums[i] - 1].getCargo();
            }
        }
        System.out.println("共可载货：" + cargo + "吨！");
        for (int i = 0; i < nums.length; i++) {
            rent = rent + cars[nums[i] - 1].getRent();
        }
        rent = rent * Days;
        System.out.println("***租车总价格:" + rent + "元！");
    }
}
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热门评论

抽象类Car的方法中并没有抽象方法……没必要用抽象类

求教main 方法中建立的静态数组car[]是什么意思啊？这个位置不是用来修饰数组类型的么？

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