java/W3周梓浩202506050319/Car.java

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;
    }
}