From 88ea075920b7bf9c48670a18ef8f1eb97a740977 Mon Sep 17 00:00:00 2001
From: LeiJuntao <2606542098@qq.com>
Date: Tue, 28 Apr 2026 11:03:02 +0800
Subject: [PATCH] W6 Animal

---
 W6/AnimalTest.java | 57 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 W6/AnimalTest.java

diff --git a/W6/AnimalTest.java b/W6/AnimalTest.java
new file mode 100644
index 0000000..afd8104
--- /dev/null
+++ b/W6/AnimalTest.java
@@ -0,0 +1,57 @@
+// 1. 创建抽象类 Animal
+abstract class Animal {
+    // 包含抽象方法 makeSound()
+    public abstract void makeSound();
+}
+
+// 2. 创建接口 Swimmable
+interface Swimmable {
+    // 包含方法 swim()
+    void swim();
+}
+
+// 3. 创建 Dog 类继承 Animal 并实现 Swimmable
+class Dog extends Animal implements Swimmable {
+
+    @Override
+    public void makeSound() {
+        System.out.println("Dog: 汪汪汪 (Woof Woof)");
+    }
+
+    @Override
+    public void swim() {
+        System.out.println("Dog: 狗狗正在游泳 (Dog is swimming)");
+    }
+}
+
+// 4. 创建 Cat 类继承 Animal (不实现 Swimmable)
+class Cat extends Animal {
+
+    @Override
+    public void makeSound() {
+        System.out.println("Cat: 喵喵喵 (Meow Meow)");
+    }
+}
+
+// 5. 主类用于测试
+public class AnimalTest {
+    public static void main(String[] args) {
+        // --- 测试 Dog ---
+        // 多态调用：父类引用指向子类对象
+        Animal myDog = new Dog();
+        myDog.makeSound(); // 调用 Dog 的叫声
+
+        // 因为 myDog 是 Animal 类型，无法直接调用 swim，需要向下转型或使用接口引用
+        // 这里演示接口多态
+        Swimmable swimmingDog = new Dog();
+        swimmingDog.swim();  // 调用 Dog 的游泳方法
+
+        System.out.println("----------------");
+
+        // --- 测试 Cat ---
+        Animal myCat = new Cat();
+        myCat.makeSound(); // 调用 Cat 的叫声
+
+        // 注意：Cat 不能转换为 Swimmable，否则会报 ClassCastException
+    }
+}