来源：blog.csdn.net/weixin_44889894

题目要求：

1、汽车租赁信息表如下：2、类和属性：3、运行效果：

效果实现：

代码实现：

1、车类：

package homework.exam;public abstract  class Vehicle {    private String num;    private String brand;    private double rent;    public String getNum() {        return num;    }    public void setNum(String num) {        this.num = num;    }    public String getBrand() {        return brand;    }    public void setBrand(String brand) {        this.brand = brand;    }    public double getRent() {        return rent;    }    public void setRent(double rent) {        this.rent = rent;    }    public Vehicle() {    }    //含参构造    public Vehicle(String num, String brand, double rent) {        this.num = num;        this.brand = brand;        this.rent = rent;    }    @Override    public String toString() {        return "汽车{" +                "车牌号='" + num + '\'' +                ", 品牌='" + brand + '\'' +                ", 日租金=" + rent +                '}';    }    public abstract double totalmoney(int days , double rent);    public abstract boolean equals(Vehicle o);}

2、汽车类：

package homework.exam;public class Cars extends Vehicle{    private String type;    public String getType() {        return type;    }    public void setType(String type) {        this.type = type;    }    public Cars(String brand,String type) {        this.type = type;    }    public Cars(String num, String brand, double rent, String type) {        super(num, brand, rent);        this.type = type;    }    @Override    public String toString() {        return "Cars{" +                "type='" + type + '\'' +                '}';    }    //计算小汽车的总租金    @Override    public double totalmoney(int days, double rent) {        if (days>7){            return days*rent*0.9;        }else if (days>30){            return days*rent*0.8;        }else if (days>150){            return days*rent*0.7;        }        return days*rent;    }    //重写equals方法    @Override    public boolean equals(Vehicle o) {        if (o instanceof Cars){            Cars cars= (Cars) o;            return this.getType().equals(cars.getType())&&this.getBrand().equals(o.getBrand());        }        return false;    }}

3、客车类：

package homework.exam;public class Bus extends Vehicle {    private String seat;    public String getSeat() {        return seat;    }    public void setSeat(String seat) {        this.seat = seat;    }    public Bus(String num, String brand, double rent, String seat) {        super(num, brand, rent);        this.seat = seat;    }    //计算客车的租金    @Override    public double totalmoney(int days, double rent) {        if (days>=3){            return days*rent*0.9;        }else if (days>=7){            return days*rent*0.8;        }else if (days>=30){            return days*rent*0.7;        }else if (days>=150){            return days*rent*0.6;        }        return days*rent;    }    //重写equals方法    @Override    public boolean equals(Vehicle o) {        return false;    }}

4、车辆管理类：

package homework.exam;public class CarRent {    //创建汽车数组，将汽车的信息放在数组中    public Cars[] carMake(){        Cars c1 = new Cars("京NY28588", "宝马", 800, "x6");        Cars c2 = new Cars("京CNY3284", "宝马", 600, "550i");        Cars c3 = new Cars("京NT37465", "别克", 300, "林荫大道");        Cars c4 = new Cars("京NT96928", "别克", 600, "GL8");        Cars[] arr1 ={c1,c2,c3,c4};        return arr1;    }    //创建客车数组，将汽车的信息放在数组中    public Bus[] busMake(){        Bus b1 = new Bus("京6566754", "金杯", 800, "16座");        Bus b2 = new Bus("京8696667", "金龙", 800, "16座");        Bus b3 = new Bus("京9696996", "金杯", 1500, "34座");        Bus b4 = new Bus("京8696998", "金龙", 1500, "34座");        Bus[] arr2={b1,b2,b3,b4};        return arr2;    }}

5、业务服务类：

package homework.exam;import java.util.Scanner;public class CarService {    public void rentcar(){        System.out.println("**********欢迎光临秋名山守望者汽车租赁公司**********");        Scanner sc = new Scanner(System.in);        System.out.println("1，轿车  2，客车");        System.out.print("请输入您要租赁的汽车类型：");        int i = sc.nextInt();        CarRent carRent = new CarRent();    //创建车库对象        Cars[] cars = carRent.carMake();    //拿到轿车数组对象        Cars car=null;        Bus[] buses = carRent.busMake();    //拿到客车数组对象        Bus bus=null;        //判断用户选择的车型        if (i==1){            System.out.print("请选择你要租赁的汽车品牌：(1，别克  2，宝马)");            int i1 = sc.nextInt();            if (i1==1){                System.out.print("请输入你要租赁的汽车类型：(1，林荫大道 2,GL8 )");            }else {                System.out.print("请输入你要租赁的汽车类型：(1，x6 2,550i )");            }            String i2 = sc.next();            //遍历汽车数组，拿到用户选择的汽车            for (int j = 0; j < cars.length; j++) {                if (cars[j].getType().equals(i2)){  //当选择的车的类型与数组中的匹配时                    car=cars[j];        //将车赋值给car                    break;                }            }            System.out.print("请输入你要租赁的天数：");            int days = sc.nextInt();            System.out.print("分配给你的汽车牌号是：");            System.out.println(car.getNum());   //获取汽车的车牌            double totalmoney =0;           //调用total            totalmoney = car.totalmoney(days, car.getRent());   //计算用户的租金            System.out.print("你需要支付的租赁分费用是：");            System.out.print(totalmoney);        }else if (i==2){            System.out.print("请选择你要租赁的汽车品牌：(1，金龙  2，金杯)");            String i2 = sc.next();            System.out.print("请输入你要租赁的汽车座位数：(1,16座  2,34座)");            String i3 = sc.next();            //遍历客车数组，拿到用户选择的客车            for (int j = 0; j < buses.length; j++) {                //当输入的客车的车牌和座位与数组中的相等，就选出用户选择的车                if (buses[j].getBrand().equals(i2)&&buses[j].getSeat().equals(i3)){                    bus=buses[j];   //将选择的车辆赋值给bus                    break;                }            }            System.out.print("请输入你要租赁的天数：");            int days = sc.nextInt();            System.out.print("分配给你的汽车牌号是：");            System.out.println();            System.out.println(bus.getNum());   //拿到用户选择的车牌号            double totalmoney = 0;      //调用totalmoney方法            totalmoney=bus.totalmoney(days, bus.getRent());     //用用户输入的天数。来计算租金            System.out.print("你需要支付的租赁分费用是：");            System.out.print(totalmoney);        }    }}

6、测试类：

package homework.exam;public class Test {    public static void main(String[] args) {        CarService cs = new CarService();        cs.rentcar();    }}

控制台输入的内容，我选择的是输入字符串类型，没有按照效果图上，如果你做的话，你可以用三元运算符来实现哦！

PS：如果觉得我的分享不错，欢迎大家随手点赞、在看。END