上传文件至 'W3周梓浩202506050319'

W3周梓浩202506050319/Car.java

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+package com.rental;
+
+public class Car {
+    private String licensePlate;
+    private String brand;
+    private String model;
+    private double DailyRent;
+    private boolean isRented;
+    //构造静态变量totalcars
+    public static int totalcars=0;
+    //构造方法
+    public Car(String licensePlate,String brand,String model,double DailyRent){
+        this.licensePlate=licensePlate;
+        this.brand=brand;
+        this.model=model;
+        this.DailyRent=DailyRent;
+        this.isRented=false;
+        totalcars++;
+    }
+    public Car(){
+        this("FV 6666","Toyota","Nissan",500.0);
+    }
+
+    public Car(String licensePlate,String brand,String model){
+        this(licensePlate,brand,model,300.0);
+    }
+
+    //构造静态getTotalCars()方法
+    public static int getTotalcars(){
+        return totalcars;
+    }
+    //建立getter  licensePlate brand model dailyRent isRented()method
+    public String getLicensePlate(){
+        return licensePlate;
+    }
+    public String getBrand(){
+        return brand;
+    }
+    public String getModel(){
+        return model;
+    }
+
+    public double getDailyRent() {
+        return DailyRent;
+    }
+    public boolean isRented(){
+        return isRented;
+    }
+
+    //建立setter
+    public void setBrand(String brand){
+        this.brand=brand;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+    public void setDailyRent(double DailyRent){
+        if (DailyRent>0){
+            this.DailyRent=DailyRent;
+        }
+        else{
+            System.out.println("非法租金,修改失败");
+        }
+    }
+    public void rentCar(){
+        if(isRented==true){
+            System.out.println("车辆已租出，无法再次租用");
+        }
+        else{
+            isRented=true;
+        }
+    }
+    public void returnCar(){
+        if(isRented==false){
+            System.out.println("车辆未被租用，无需归还");
+        }
+        else{
+            isRented=false;
+        }
+    }
+    public double calculateRent(int days){
+        double money=days*DailyRent;
+        return money;
+    }
+}
+

W3周梓浩202506050319/TestCar.java

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+package com.rental;
+
+public class TestCar {
+    //编写静态方法displayInfo()打印车辆信息
+    public static void displayInfo(Car car){     //static是声明静态
+        System.out.println("车辆信息:车牌号"+car.getLicensePlate()+" 品牌"+car.getBrand()+" 型号"+car.getModel()+" 日租金(元/天)"+car.getDailyRent());
+    }
+    public static void main(String[] args){
+        Car mine1=new Car("FU 0001","Crown","Wilsaf",200.0);
+        Car mine2=new Car("FU 8888","Toyota","Alpha");
+        Car mine3=new Car();
+        displayInfo(mine1);
+        displayInfo(mine2);
+        displayInfo(mine3);
+        //调用两次rentCar()并查看提示
+        System.out.println("--调用两次rentCar()并查看提示--");
+        mine1.rentCar();
+        System.out.println(mine1.isRented());
+        mine1.rentCar();
+        //调用两次returnCar()并查看提示
+        System.out.println("--调用两次returnCar()并查看提示--");
+        mine1.returnCar();
+        System.out.println(mine1.isRented());
+        mine1.returnCar();
+        //计算5天的租金
+        System.out.println("--计算5天的租金--");
+        System.out.println("您的总租金为:"+mine1.calculateRent(5)+"元");
+        //用setter修改租金为-100查看提示
+        System.out.println("--用setter修改租金为-100查看提示--");
+        System.out.println("当前日租金为:"+mine1.getDailyRent()+"元");
+        mine1.setDailyRent(-100);
+        //查看日租金是否保持原值
+        System.out.println("--查看日租金是否保持原值--");
+        System.out.println("当前日租金为:"+mine1.getDailyRent()+"元");
+        //输出车辆总数
+        System.out.println("--输出车辆总数--");
+        System.out.println("车辆总数为:"+Car.getTotalcars());
+        }
+    }
+