删除 'w3/Car.java'

w3/Car.java

@@ -1,107 +0,0 @@
-package com.rental;
-
-public class Car {
-    // 私有属性
-    private final String licensePlate;  // 车牌号（不可变）
-    private String brand;               // 品牌
-    private String model;               // 型号
-    private double dailyRent;            // 日租金
-    private boolean isRented;            // 租出状态
-    
-    // 静态变量（选做）
-    private static int totalCars = 0;
-    
-    // 全参构造方法
-    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;  // 初始化为未租出
-        totalCars++;  // 创建车辆时总数加1
-    }
-    
-    // 三参构造方法（日租金使用默认值300）
-    public Car(String licensePlate, String brand, String model) {
-        this(licensePlate, brand, model, 300.0);  // 调用全参构造
-    }
-    
-    // Getter方法
-    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;
-    }
-    
-    // Setter方法
-    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("错误：日租金必须大于0，保持原值：" + this.dailyRent);
-        }
-    }
-    
-    // 业务方法：租车
-    public void rentCar() {
-        if (isRented) {
-            System.out.println("车辆已租出，无法再次租用");
-        } else {
-            isRented = true;
-            System.out.println("车辆 " + licensePlate + " 租用成功");
-        }
-    }
-    
-    // 业务方法：还车
-    public void returnCar() {
-        if (!isRented) {
-            System.out.println("车辆未被租用，无需归还");
-        } else {
-            isRented = false;
-            System.out.println("车辆 " + licensePlate + " 归还成功");
-        }
-    }
-    
-    // 业务方法：计算租金
-    public double calculateRent(int days) {
-        return dailyRent * days;
-    }
-    
-    // 显示车辆信息的方法
-    public void displayInfo() {
-        System.out.println("========== 车辆信息 ==========");
-        System.out.println("车牌号：" + licensePlate);
-        System.out.println("品牌：" + brand);
-        System.out.println("型号：" + model);
-        System.out.println("日租金：" + dailyRent + "元/天");
-        System.out.println("租出状态：" + (isRented ? "已租出" : "未租出"));
-        System.out.println("================================");
-    }
-    
-    // 静态方法
-    public static int getTotalCars() {
-        return totalCars;
-    }
-}