Java编写汽车租赁系统
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;}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;}public String toString() {return "Cars{" +"type='" + type + '\'' +'}';}//计算小汽车的总租金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carbreak;}}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totaltotalmoney = 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busbreak;}}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！
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