From 42e2395cbb69a5f9d0df2c0a3b16764a85ff88c4 Mon Sep 17 00:00:00 2001
From: zhangsiyuan <3837703520@qq.com>
Date: Tue, 24 Mar 2026 12:22:34 +0800
Subject: [PATCH] =?UTF-8?q?=E5=BC=A0=E6=80=9D=E6=B8=8A-202401070104-w3?=
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---
 w3/TestCar.java | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 w3/TestCar.java

diff --git a/w3/TestCar.java b/w3/TestCar.java
new file mode 100644
index 0000000..100c495
--- /dev/null
+++ b/w3/TestCar.java
@@ -0,0 +1,41 @@
+import com.rental.Car;
+
+public class TestCar {
+    public static void main(String[] args) {
+        //创建至少3个Car对象
+        Car car1 = new Car("京A88888", "奥迪", "A6L", 500.0); 
+        Car car2 = new Car("沪B66666", "宝马", "5系");
+        Car car3 = new Car("粤C12345", "奔驰", "E300L", 600.0);
+
+        //输出所有车辆信息
+        System.out.println("所有车辆信息如下");
+        car1.displayInfo();
+        car2.displayInfo();
+        car3.displayInfo();
+        System.out.println();
+
+        //对其中一辆车依次调用业务方法
+        System.out.println("对其中一辆车依次调用业务方法如下");
+        car1.rentCar();     // 第一次租用
+        car1.rentCar();     // 再次租用，查看提示
+        car1.returnCar();   // 第一次归还
+        car1.returnCar();   // 再次归还，查看提示
+        System.out.println();
+
+        //调用 calculateRent(5) 计算费用
+        System.out.println("调用 calculateRent(5) 计算某辆车租用 5 天的费用");
+        double rent5Days = car3.calculateRent(5);
+        System.out.println("车辆 " + car3.getLicensePlate() + " 租用5天的费用为: " + rent5Days + " 元");
+        System.out.println();
+
+        //尝试通过 setter 修改日租金为非法值
+        System.out.println("测试日租金合法性校验");
+        System.out.println("修改前 car2 的日租金: " + car2.getDailyRent());
+        car2.setDailyRent(-100); // 设置为非法值
+        System.out.println("修改后 car2 的日租金: " + car2.getDailyRent());
+        System.out.println();
+
+        //输出总车辆数
+        System.out.println("本次运行共创建了 " + Car.getTotalCars() + " 辆车。");
+    }
+}
\ No newline at end of file