java/W3/com/rental/Car.java

package com.rental;

public class Car {
    private final String licensePlate;
    private String brand;
    private String model;
    private double dailyRent;
    private boolean isRented;
    private static int totalCars=0;
    public Car(String licensePlate,String brand,String model,double dailyRent){
        this.licensePlate=licensePlate;
        this.brand=brand;
        this.model=model;
        if (dailyRent > 0) {
            this.dailyRent = dailyRent;
        } else {
            this.dailyRent = 300;
            System.out.println("日租金不合法");
        }
        this.isRented=false;
        Car.totalCars+=1;
    }
    public String getLicensePlate(){
        return licensePlate;
    }
    public Car(String licensePlate, String brand, String model) {
        this(licensePlate, brand, model, 300);
    }
    public String getBrand(){
        return brand;
    }
    public  String getModel(){
        return  model;
    }
    public double getDailyRent(){
        return  dailyRent;
    }
    public boolean  isRented() {
        return isRented;
    }
    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("租金不合法");
        }
    }
    public void rentCar(){
        if(isRented){
            System.out.println("车辆已租出，无法再次租用");
            return;
        }
        this.isRented=true;
    }
    public void returnCar(){
        if (!isRented){
            System.out.println("车辆未被租用，无需归还");
            return;
        }
        this.isRented=false;
    }
    public double calculateRent(int days){
        return dailyRent*days;
    }
    public static int getTotalCars(){
        return totalCars;
    }
}