java/w3/TestCar.java

package com.rental;

public class TestCar {
    public static void main(String[] args) {
        // 创建3辆车，使用不同构造
        Car car1 = new Car("京A12345", "丰田", "Camry", 260);
        Car car2 = new Car("沪B67890", "大众", "Magotan");
        Car car3 = new Car("粤C98765", "比亚迪", "Han", 350);

        // 打印信息
        car1.displayInfo();
        car2.displayInfo();
        car3.displayInfo();

        // 测试租车/还车重复操作
        System.out.println("===测试车辆1租车===");
        car1.rentCar();
        car1.rentCar();

        System.out.println("===测试车辆1还车===");
        car1.returnCar();
        car1.returnCar();

        // 计算5天租金
        System.out.println("\n车辆2租用5天费用：" + car2.calculateRent(5));

        // 测试非法租金
        System.out.println("\n===尝试设置非法租金===");
        car3.setDailyRent(-100);

        // 静态变量：总车辆数
        System.out.println("\n系统总车辆数：" + Car.getTotalCars());
    }
}