diff --git a/day11/src/com/inmind/final01/Demo01.java b/day11/src/com/inmind/final01/Demo01.java
new file mode 100644
index 0000000..c7b6135
--- /dev/null
+++ b/day11/src/com/inmind/final01/Demo01.java
@@ -0,0 +1,15 @@
+package com.inmind.final01;
+/*
+final:被它修饰，不能够被改变
+final的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/Fu.java b/day11/src/com/inmind/final01/Fu.java
new file mode 100644
index 0000000..48acd7e
--- /dev/null
+++ b/day11/src/com/inmind/final01/Fu.java
@@ -0,0 +1,4 @@
+package com.inmind.final01;
+
+public final class Fu {
+}
diff --git a/day11/src/com/inmind/final01/Zi.java b/day11/src/com/inmind/final01/Zi.java
new file mode 100644
index 0000000..c2b7b83
--- /dev/null
+++ b/day11/src/com/inmind/final01/Zi.java
@@ -0,0 +1,4 @@
+package com.inmind.final01;
+
+public class Zi {
+}