diff --git a/javaSE-day12/src/com/inmind/annotation03/Demo07.java b/javaSE-day12/src/com/inmind/annotation03/Demo07.java
new file mode 100644
index 0000000..2fe0cb0
--- /dev/null
+++ b/javaSE-day12/src/com/inmind/annotation03/Demo07.java
@@ -0,0 +1,14 @@
+package com.inmind.annotation03;
+/*
+JDK中的注解
+@Override :验证重写
+@FunctionalInterface ：验证是否是函数式接口
+
+注解是一种特殊的接口
+
+java中的引用类型：类，接口，枚举，注解，数组
+ */
+
+
+public class Demo07 {
+}