From ef71cf7c3b492b67a652e07e38aa3956822b0385 Mon Sep 17 00:00:00 2001
From: Wangyanshu <2680603193@qq.com>
Date: Thu, 7 May 2026 15:06:50 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20'=E8=BF=9B=E9=98=B6?=
 =?UTF-8?q?=E9=A2=98'?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 进阶题 | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 进阶题

diff --git a/进阶题 b/进阶题
new file mode 100644
index 0000000..d3c535f
--- /dev/null
+++ b/进阶题
@@ -0,0 +1,46 @@
+// 抽象父类 Vehicle
+public abstract class Vehicle {
+    public abstract void run();
+}
+
+// 子类 Car
+public class Car extends Vehicle {
+    @Override
+    public void run() {
+        System.out.println("汽车在公路上行驶，速度 100km/h");
+    }
+}
+
+// 子类 Bike
+public class Bike extends Vehicle {
+    @Override
+    public void run() {
+        System.out.println("自行车在非机动车道骑行，速度 15km/h");
+    }
+}
+
+// 子类 Truck
+public class Truck extends Vehicle {
+    @Override
+    public void run() {
+        System.out.println("卡车在公路上缓慢行驶，速度 60km/h");
+    }
+}
+
+// 测试主类
+public class VehicleTest {
+    public static void main(String[] args) {
+        System.out.println("=== 进阶题测试 ===");
+        // 创建 Vehicle 数组，存放不同车辆
+        Vehicle[] vehicles = {
+            new Car(),
+            new Bike(),
+            new Truck()
+        };
+
+        // 遍历调用 run() 方法
+        for (Vehicle v : vehicles) {
+            v.run();
+        }
+    }
+}
\ No newline at end of file