From 3bcce7c9e7b3ed30d76bb2c68762e1410b668914 Mon Sep 17 00:00:00 2001
From: NCJOAQ <2627723488@qq.com>
Date: Mon, 14 Jul 2025 00:08:26 +0800
Subject: [PATCH] =?UTF-8?q?feat(class21):=20=E5=A4=9A=E6=80=81?=
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- 创建 Animal 类，定义 run 方法
- 创建 Tortoise 和 Wolf 类，继承 Animal 类并重写 run 方法
- 创建 Test 类，测试不同动物的 run 方法
---
 src/class21/Animal.java   |  8 ++++++++
 src/class21/Test.java     | 10 ++++++++++
 src/class21/Tortoise.java |  8 ++++++++
 src/class21/Wolf.java     |  8 ++++++++
 4 files changed, 34 insertions(+)
 create mode 100644 src/class21/Animal.java
 create mode 100644 src/class21/Test.java
 create mode 100644 src/class21/Tortoise.java
 create mode 100644 src/class21/Wolf.java

diff --git a/src/class21/Animal.java b/src/class21/Animal.java
new file mode 100644
index 0000000..b821742
--- /dev/null
+++ b/src/class21/Animal.java
@@ -0,0 +1,8 @@
+package class21;
+
+public class Animal {
+
+    public void run(){
+        System.out.println("动物会跑~~~");
+    }
+}
diff --git a/src/class21/Test.java b/src/class21/Test.java
new file mode 100644
index 0000000..facd954
--- /dev/null
+++ b/src/class21/Test.java
@@ -0,0 +1,10 @@
+package class21;
+
+public class Test {
+    public static void main(String[] args) {
+        Animal a1 = new Wolf();
+        Animal a2 = new Tortoise();
+        a1.run();
+        a2.run();
+    }
+}
diff --git a/src/class21/Tortoise.java b/src/class21/Tortoise.java
new file mode 100644
index 0000000..18075c4
--- /dev/null
+++ b/src/class21/Tortoise.java
@@ -0,0 +1,8 @@
+package class21;
+
+public class Tortoise extends Animal{
+    @Override
+    public void run() {
+        System.out.println("🐢跑的贼慢~~");
+    }
+}
diff --git a/src/class21/Wolf.java b/src/class21/Wolf.java
new file mode 100644
index 0000000..241ef01
--- /dev/null
+++ b/src/class21/Wolf.java
@@ -0,0 +1,8 @@
+package class21;
+
+public class Wolf extends Animal{
+    @Override
+    public void run() {
+        System.out.println("狼跑的贼溜~");
+    }
+}