汽车租赁系统采用Java语言编写

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主要实现功能

1. 客户租两种不同的车，轿车和客车

2. 根据日租金和天数计算租金

3. 租赁多量车时计算总金额

主要方法

1. 抽象出汽车类，有子类为轿车类和客车类

2. 抽象方法为计算租金函数，和展示汽车基本信息函数

3. 轿车类有车名，皮牌，车牌号，车的数量，日租金等属性

4. 客车类有车名，皮牌，车牌号，车的数量，日租金，座位数等属性

5. 系统服务类，客户类。

6. 系统服务类有客户名单，轿车对象数组，客车对象数组，

7. 客户有登陆系统的root，password

package car_rental;
import java.io.*;
import java.util.*;abstract class Car{protected String carName;   //车的名字protected String carLabel;    //品牌protected String carNumber;    //车牌号protected int number_of_car;    //车的数量abstract double getRentPrice(int day);abstract void displayInfo();
}class Small_car extends Car{private double dayRent;//static int number_of_car = 0;Small_car(){}Small_car(String carName, int dayRent, String carLabel, String carNumber, int number_of_car){this.carName = carName;//this.dayRent = dayRent;this.carLabel = carLabel;this.carNumber = carNumber;this.number_of_car = number_of_car;}void displayInfo() {System.out.println(this.carName + "        " + this.carLabel + "       " + this.carNumber + "      "+ this.dayRent + "     " + this.number_of_car);}double getRentPrice(int day){return this.dayRent * day;}
}class Passenger_car extends Car{private int carSeat;private double dayRent1;private double dayRent2;Passenger_car(){}Passenger_car(String carName, double dayRent1, double dayRent2, String carLabel, String carNumber,int carSeat, int number_of_car){this.carName = carName;//this.dayRent1 = dayRent1;this.dayRent2 = dayRent2;this.carLabel = carLabel;this.carNumber = carNumber;this.carSeat = carSeat;this.number_of_car = number_of_car;}void displayInfo() {System.out.print(this.carName + "        " + this.carLabel + "       " + this.carNumber + "      "+ this.carSeat + "     " + this.number_of_car + "      ");if (this.carSeat > 16)System.out.println(this.dayRent2);else System.out.println(this.dayRent1);}@Overridedouble getRentPrice(int day){if (this.carSeat > 16)return this.dayRent2 * day;else return this.dayRent1 * day;}
}class Car_client{String clientName;String password;double price;static double allPrice = 0.0;Car_client(){}void setName(String clientName) {this.clientName = clientName;}void setPassword(String password) {this.password = password;}char chooseServe(char flag) {if (flag == '0')System.out.println("clientName = " + this.clientName + "\tALL price = " + this.allPrice);return flag;}int chooseCar() {Scanner sc =new Scanner(System.in);int number = sc.nextInt();return number;}int chooseDay() {Scanner sc =new Scanner(System.in);int day = sc.nextInt();return day;}}class Car_serve_system{Small_car sCar[];Passenger_car pCar[];Car_client client;void Serve(char flag) {if (flag == '0')this.exitSystem();if (flag == '1')this.display_scar();if (flag == '2')this.display_pcar();}void login() {System.out.println("欢迎登录汽车租赁系统");}void mainWindow() {System.out.println("                 *****欢迎进入汽车租赁系统*****                    ");}void initCar() {sCar = new Small_car[10];pCar = new Passenger_car[3];sCar[0] = new Small_car("本田CRV", 600, "宝马", "京NY28588", 2);sCar[1] = new Small_car("福特", 500, "宝马", "京1234567", 3);sCar[2] = new Small_car("本田HRV", 400, "宝马", "京1000000", 3);sCar[3] = new Small_car("本田CRV", 600, "别克", "京NT43765", 4);sCar[4] = new Small_car("福特", 500, "别克", "京2000000", 5);sCar[5] = new Small_car("本田HRV", 400, "别克", "京3000000", 6);sCar[6] = new Small_car("本田CRV", 600, "金龙", "京5643765", 0);sCar[7] = new Small_car("福特", 500, "金龙", "京N565656", 9);sCar[8] = new Small_car("本田HRV", 400, "金龙", "京7777777", 10);sCar[9] = new Small_car("本田CRV", 600, "宝马", "京NNN3284", 2);pCar[0] = new Passenger_car("<=16座", 800, 1000, "ZK6535DX", "京123", 15, 15);pCar[1] = new Passenger_car(">16座", 800, 1000, "ZK6809DX", "京123", 25, 2);pCar[2] = new Passenger_car(">16座", 800, 1000, "T7(V6)汽油版", "京123", 40, 5);}void display_scar() {System.out.println("车的名字" + "     " + "车的品牌" + "        " + "车牌号" + "     "+ "日租费" +"       "+ "可租的数量");for (Small_car sc : sCar){sc.displayInfo();}System.out.print("请选择第几辆车租借：");}void display_pcar() {System.out.println("车的名字" + "     " + "车的品牌" + "            " + "车牌号" + "     "+ "车座数" + "      " + "可租的数量" + "       " + "日租费");for (Passenger_car pc : pCar) {pc.displayInfo();}System.out.print("请选择第几辆车租借：");}void exitSystem() {System.exit(0);   //}void give_s_car(int flag) {if (sCar[flag-1].number_of_car > 0) {System.out.print("请选择租借天数：");this.client.price = this.sCar[flag-1].getRentPrice(this.client.chooseDay());this.sCar[flag-1].number_of_car--;System.out.println("price = " + this.client.price);this.client.allPrice += this.client.price;}else {System.out.print("该车已经全部被出租!请另外选择!");this.give_s_car(this.client.chooseCar());}
}void give_p_car(int flag) {if (pCar[flag-1].number_of_car > 0) {System.out.print("请选择租借天数：");this.client.price = this.pCar[flag-1].getRentPrice(this.client.chooseDay());this.pCar[flag-1].number_of_car--;System.out.println("price = " + this.client.price);this.client.allPrice += this.client.price;}else {System.out.print("该车已经全部被出租!请另外选择!");this.give_s_car(this.client.chooseCar());}}}public class Rent_car{public static void main(String[] args) throws IOException {// TODO Auto-generated method stubScanner sc =new Scanner(System.in);   //raedCar_serve_system carSystem = new Car_serve_system();Car_client carClient = new Car_client();carSystem.client = carClient;carSystem.login();System.out.print("please write your name:");carClient.setName(sc.nextLine());System.out.print("please write your password:");carClient.setPassword(sc.nextLine());carSystem.initCar();carSystem.mainWindow();char flag = 'a';while (flag != '0') {   //while true :System.out.println("   0:退出" + "         " +"1:租轿车" + "          " + "2:租客车    ");flag = (char)System.in.read();carSystem.Serve(carClient.chooseServe(flag));if (flag == '1') {carSystem.give_s_car(carClient.chooseCar());}elsecarSystem.give_p_car(carClient.chooseCar());}}
}

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汽车租赁系统（Java）

汽车租赁系统采用Java语言编写

主要实现功能

主要方法

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