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", 280);
        Car car2 = new Car("沪B67890", "大众", "Passat");
        Car car3 = new Car("粤C98765", "宝马", "325i", 500);

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

        // 测试租车、重复租车、还车、重复还车
        System.out.println("===测试car1租车还车===");
        car1.rentCar();
        car1.rentCar();
        car1.returnCar();
        car1.returnCar();
        System.out.println();

        // 计算5天租金
        System.out.println("car2 租用5天租金：" + car2.calculateRent(5));
        System.out.println();

        // 测试非法租金
        System.out.println("===尝试设置非法租金===");
        car3.setDailyRent(-100);
        System.out.println("设置后日租金：" + car3.getDailyRent());
        System.out.println();

        // 静态总数
        System.out.println("当前车辆总数：" + Car.getTotalCars());
    }
}