diff --git a/day11/src/com/inmind/final01/Demo01.java b/day11/src/com/inmind/final01/Demo01.java
new file mode 100644
index 0000000..37118c9
--- /dev/null
+++ b/day11/src/com/inmind/final01/Demo01.java
@@ -0,0 +1,16 @@
+package com.inmind.final01;
+/*
+final:被它修饰的内容，不能够被改变
+final有4个用法：
+1.修饰类
+2.修饰方法
+3.修饰成员变量
+4.修饰局部变量
+
+-------------------------------------
+final关键字用于修饰类:该类就不能被继承
+final与abstract是冲突，不能一起使用
+被final修饰的类，叫“太监类,最终类”
+ */
+public class Demo01 {
+}
diff --git a/day11/src/com/inmind/final01/FinalClass.java b/day11/src/com/inmind/final01/FinalClass.java
new file mode 100644
index 0000000..c74ca52
--- /dev/null
+++ b/day11/src/com/inmind/final01/FinalClass.java
@@ -0,0 +1,12 @@
+package com.inmind.final01;
+//最终类
+public  final class FinalClass {
+    public void method1() {
+
+    }
+
+    public static void method2(){
+
+    }
+
+}
diff --git a/day11/src/com/inmind/final01/NormalClass.java b/day11/src/com/inmind/final01/NormalClass.java
new file mode 100644
index 0000000..cfc350a
--- /dev/null
+++ b/day11/src/com/inmind/final01/NormalClass.java
@@ -0,0 +1,10 @@
+package com.inmind.final01;
+/*
+final关键字用于修饰方法:该方法就不能被子类重写
+ */
+public class NormalClass {
+    //普通方法+final=最终方法，无法被修改的方法
+    public final void method(){
+        System.out.println("NormalClass的method方法");
+    }
+}
diff --git a/day11/src/com/inmind/final01/Zi.java b/day11/src/com/inmind/final01/Zi.java
new file mode 100644
index 0000000..b27733b
--- /dev/null
+++ b/day11/src/com/inmind/final01/Zi.java
@@ -0,0 +1,6 @@
+package com.inmind.final01;
+
+public class Zi extends NormalClass{
+    //ctrl+o
+
+}