diff --git a/day11/src/com/inmind/final_method/Demo02.java b/day11/src/com/inmind/final_method/Demo02.java
new file mode 100644
index 0000000..570eaa6
--- /dev/null
+++ b/day11/src/com/inmind/final_method/Demo02.java
@@ -0,0 +1,13 @@
+package com.inmind.final_method;
+
+public class Demo02 {
+    public static void main(String[] args) {
+        //创建一个父类对象
+        Fu fu = new Fu();
+        fu.method();
+        //多态的写法：
+        Fu f = new Zi();//格式：父类引用指向子类对象
+        //编译看左边，运行看右边
+        f.method();
+    }
+}
diff --git a/day11/src/com/inmind/final_method/Fu.java b/day11/src/com/inmind/final_method/Fu.java
new file mode 100644
index 0000000..665098b
--- /dev/null
+++ b/day11/src/com/inmind/final_method/Fu.java
@@ -0,0 +1,9 @@
+package com.inmind.final_method;
+/*
+final关键字用于修饰方法:该方法就不能被子类重写
+ */
+public class Fu {
+    public final void method(){
+        System.out.println("父类的method方法");
+    }
+}
diff --git a/day11/src/com/inmind/final_method/Zi.java b/day11/src/com/inmind/final_method/Zi.java
new file mode 100644
index 0000000..380ef0b
--- /dev/null
+++ b/day11/src/com/inmind/final_method/Zi.java
@@ -0,0 +1,14 @@
+package com.inmind.final_method;
+
+public class Zi extends Fu{
+    //ctrl+o
+
+    /*@Override
+    public void method() {
+        //super.method();//调用父类的成员方法，沿用
+        System.out.println("子类的method方法,重写了父类的功能");
+    }*/
+
+    public void methodZi(){
+    }
+}