From c53daf921c762e0a01f6c1fd39d882ca71a6b475 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Sun, 25 Jan 2026 10:01:15 +0800
Subject: [PATCH] =?UTF-8?q?day09-=E5=A4=9A=E6=80=81=E7=9A=84=E5=A5=BD?=
 =?UTF-8?q?=E5=A4=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../com/inmind/duotai08/test/Assistant.java   |  8 ++++
 .../src/com/inmind/duotai08/test/Demo09.java  | 46 +++++++++++++++++++
 .../com/inmind/duotai08/test/Employee.java    |  8 ++++
 .../src/com/inmind/duotai08/test/Teacher.java |  8 ++++
 4 files changed, 70 insertions(+)
 create mode 100644 day10/src/com/inmind/duotai08/test/Assistant.java
 create mode 100644 day10/src/com/inmind/duotai08/test/Demo09.java
 create mode 100644 day10/src/com/inmind/duotai08/test/Employee.java
 create mode 100644 day10/src/com/inmind/duotai08/test/Teacher.java

diff --git a/day10/src/com/inmind/duotai08/test/Assistant.java b/day10/src/com/inmind/duotai08/test/Assistant.java
new file mode 100644
index 0000000..2e51487
--- /dev/null
+++ b/day10/src/com/inmind/duotai08/test/Assistant.java
@@ -0,0 +1,8 @@
+package com.inmind.duotai08.test;
+
+public class Assistant extends Employee{
+    @Override
+    public void work() {
+        System.out.println("辅导员在辅导学生");
+    }
+}
diff --git a/day10/src/com/inmind/duotai08/test/Demo09.java b/day10/src/com/inmind/duotai08/test/Demo09.java
new file mode 100644
index 0000000..80d7a1a
--- /dev/null
+++ b/day10/src/com/inmind/duotai08/test/Demo09.java
@@ -0,0 +1,46 @@
+package com.inmind.duotai08.test;
+/*
+多态的核心好处可以概括为：**“以不变应万变”**—— 通过接口或者父类，应对具体实现的变化。
+它让代码更简洁、更灵活、更易于扩展，是构建大型、可维护系统的关键技术。
+ */
+public class Demo09 {
+    public static void main(String[] args) {
+        //没有多态的代码编写
+        //创建出每个子类对象，固定地执行一段功能代码，调用子类的work
+        Teacher teacher = new Teacher();
+
+        Assistant assistant = new Assistant();
+
+        //以上代码没有多态，所以有50个子类，重复的代码就要编写或封装50次，太繁琐
+        //多态写法
+        Employee e1 = new Teacher();
+        Employee e2 = new Assistant();
+        dTWork(e1);
+        dTWork(e2);
+        dTWork(teacher);
+        dTWork(assistant);
+    }
+
+    //定义一个父类类型接收子类对象，多态的写法
+    private static void dTWork(Employee employee) {
+        System.out.println("hello");
+        System.out.println("world");
+        employee.work();
+    }
+
+    //定义一个重复调用的普通写法
+    /*private static void dWork1(Assistant assistant) {
+        System.out.println("hello");
+        System.out.println("world");
+        assistant.work();
+    }
+
+    private static void dWork(Teacher teacher) {
+        System.out.println("hello");
+        System.out.println("world");
+        teacher.work();
+    }*/
+
+
+
+}
diff --git a/day10/src/com/inmind/duotai08/test/Employee.java b/day10/src/com/inmind/duotai08/test/Employee.java
new file mode 100644
index 0000000..bba3184
--- /dev/null
+++ b/day10/src/com/inmind/duotai08/test/Employee.java
@@ -0,0 +1,8 @@
+package com.inmind.duotai08.test;
+
+public abstract class Employee {
+    String name;
+    int age;
+
+    public abstract void work();//强制子类必须实现重写该方法
+}
diff --git a/day10/src/com/inmind/duotai08/test/Teacher.java b/day10/src/com/inmind/duotai08/test/Teacher.java
new file mode 100644
index 0000000..02d1377
--- /dev/null
+++ b/day10/src/com/inmind/duotai08/test/Teacher.java
@@ -0,0 +1,8 @@
+package com.inmind.duotai08.test;
+
+public class Teacher extends Employee{
+    @Override
+    public void work() {
+        System.out.println("老师在上课");
+    }
+}