From 1601d39e291ffae6fabb589d1b303d5ba79c32af Mon Sep 17 00:00:00 2001
From: Fuyuxinge <1876397977@qq.com>
Date: Thu, 2 Apr 2026 13:56:37 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E4=BA=A4w4=E5=92=8C=E4=B8=A4=E4=B8=AA?=
 =?UTF-8?q?=E6=96=87=E4=BB=B6?=
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---
 w4/Car.java     |  0
 w4/TestCar.java | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 w4/Car.java
 create mode 100644 w4/TestCar.java

diff --git a/w4/Car.java b/w4/Car.java
new file mode 100644
index 0000000..e69de29
diff --git a/w4/TestCar.java b/w4/TestCar.java
new file mode 100644
index 0000000..c008f31
--- /dev/null
+++ b/w4/TestCar.java
@@ -0,0 +1,36 @@
+package w4;
+
+
+public class TestCar {
+    public static void main(String[] args) {
+        Car car1 = new Car("京A12345", "丰田", "凯美瑞", 450.0);
+        Car car2 = new Car("沪B67890", "大众", "帕萨特");
+        Car car3 = new Car("粤C54321", "宝马", "3系", 680.0);
+
+        System.out.println("=====初始车辆信息=====");
+        car1.displayInfo();
+        car2.displayInfo();
+        car3.displayInfo();
+
+
+        System.out.println("=====测试租车还车=====");
+        car1.rentCar();    
+        car1.rentCar();    
+        car1.returnCar();  
+        car1.returnCar();  
+        System.out.println();
+
+
+        System.out.println("=====计算5天租金=====");
+        double rent = car2.calculateRent(5);
+        System.out.println("车辆2租用5天总费用：" + rent + "元\n");
+
+
+        System.out.println("=====测试非法修改租金=====");
+        car3.setDailyRent(-100);
+        System.out.println();
+
+        System.out.println("=====车辆总数统计=====");
+        System.out.println("系统中总车辆数：" + Car.getTotalCars());
+    }
+}