diff --git a/s-day04/src/com/inmind/map01/LinkedHashMapDemo05.java b/s-day04/src/com/inmind/map01/LinkedHashMapDemo05.java
new file mode 100644
index 0000000..6bdb2ed
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+++ b/s-day04/src/com/inmind/map01/LinkedHashMapDemo05.java
@@ -0,0 +1,28 @@
+package com.inmind.map01;
+
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/*
+6.LinkedHashMap的特点
+hash:哈希表，它的作用去重，通过hashCode和equals
+link：链表，保证有序
+
+LinkedHashMap：存取有序，没有索引，不能重复的，一个双列集合
+ */
+public class LinkedHashMapDemo05 {
+    public static void main(String[] args) {
+        Map<String,String> maps = new HashMap<>();
+        maps.put("刘备","孙尚香");
+        maps.put("吕布","貂蝉");
+        maps.put("张飞","夏侯驰");
+        System.out.println(maps);
+        System.out.println("-------------");
+        LinkedHashMap<String,String> linkedMaps = new LinkedHashMap<>();
+        linkedMaps.put("吕布","貂蝉");
+        linkedMaps.put("张飞","夏侯驰");
+        linkedMaps.put("刘备","孙尚香");
+        System.out.println(linkedMaps);
+    }
+}