diff --git a/javaSE-day03/src/com/inmind/set02/LinkedHashSetDemo11.java b/javaSE-day03/src/com/inmind/set02/LinkedHashSetDemo11.java
new file mode 100644
index 0000000..c3d299b
--- /dev/null
+++ b/javaSE-day03/src/com/inmind/set02/LinkedHashSetDemo11.java
@@ -0,0 +1,23 @@
+package com.inmind.set02;
+
+import java.util.LinkedHashSet;
+
+/*
+LinkedHashSet的特点
+    LinkedHashSet底层数据结构:在哈希表的基础上,再加链表
+    哈希表:去重
+    链表:保证数据的顺序
+
+    LinkedHashSet的特点：
+    1.不能重复
+    2.没有索引
+ */
+public class LinkedHashSetDemo11 {
+    public static void main(String[] args) {
+        LinkedHashSet<String> sets = new LinkedHashSet<>();
+        sets.add("关羽");
+        sets.add("刘备");
+        sets.add("张飞");
+        System.out.println(sets);
+    }
+}