diff --git a/demo1/src/main/java/cn/bunny/Demo01.java b/demo1/src/main/java/cn/bunny/file_dir/Demo01.java
similarity index 97%
rename from demo1/src/main/java/cn/bunny/Demo01.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo01.java
index 8af7e3f..d9f9c74 100644
--- a/demo1/src/main/java/cn/bunny/Demo01.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo01.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.io.FileInputStream;
 import java.io.IOException;
diff --git a/demo1/src/main/java/cn/bunny/Demo02.java b/demo1/src/main/java/cn/bunny/file_dir/Demo02.java
similarity index 80%
rename from demo1/src/main/java/cn/bunny/Demo02.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo02.java
index d5b6049..35620d6 100644
--- a/demo1/src/main/java/cn/bunny/Demo02.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo02.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 public class Demo02 {
     public static void main(String[] args) {
diff --git a/demo1/src/main/java/cn/bunny/Demo10.java b/demo1/src/main/java/cn/bunny/file_dir/Demo10.java
similarity index 99%
rename from demo1/src/main/java/cn/bunny/Demo10.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo10.java
index e8c7c57..70f37b9 100644
--- a/demo1/src/main/java/cn/bunny/Demo10.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo10.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.io.IOException;
 import java.nio.file.*;
diff --git a/demo1/src/main/java/cn/bunny/Demo3.java b/demo1/src/main/java/cn/bunny/file_dir/Demo3.java
similarity index 91%
rename from demo1/src/main/java/cn/bunny/Demo3.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo3.java
index 422daee..9ef375d 100644
--- a/demo1/src/main/java/cn/bunny/Demo3.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo3.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.nio.ByteBuffer;
 
diff --git a/demo1/src/main/java/cn/bunny/Demo4.java b/demo1/src/main/java/cn/bunny/file_dir/Demo4.java
similarity index 95%
rename from demo1/src/main/java/cn/bunny/Demo4.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo4.java
index b6c300b..b17d8b0 100644
--- a/demo1/src/main/java/cn/bunny/Demo4.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo4.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.nio.ByteBuffer;
 
diff --git a/demo1/src/main/java/cn/bunny/Demo5.java b/demo1/src/main/java/cn/bunny/file_dir/Demo5.java
similarity index 96%
rename from demo1/src/main/java/cn/bunny/Demo5.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo5.java
index a598932..eef89ba 100644
--- a/demo1/src/main/java/cn/bunny/Demo5.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo5.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
diff --git a/demo1/src/main/java/cn/bunny/Demo6.java b/demo1/src/main/java/cn/bunny/file_dir/Demo6.java
similarity index 96%
rename from demo1/src/main/java/cn/bunny/Demo6.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo6.java
index 35d51bf..3157cbd 100644
--- a/demo1/src/main/java/cn/bunny/Demo6.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo6.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.io.IOException;
 import java.io.RandomAccessFile;
diff --git a/demo1/src/main/java/cn/bunny/Demo7.java b/demo1/src/main/java/cn/bunny/file_dir/Demo7.java
similarity index 97%
rename from demo1/src/main/java/cn/bunny/Demo7.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo7.java
index e31ccc7..84234a5 100644
--- a/demo1/src/main/java/cn/bunny/Demo7.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo7.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.nio.ByteBuffer;
 
diff --git a/demo1/src/main/java/cn/bunny/Demo8.java b/demo1/src/main/java/cn/bunny/file_dir/Demo8.java
similarity index 96%
rename from demo1/src/main/java/cn/bunny/Demo8.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo8.java
index e2abf25..9e45024 100644
--- a/demo1/src/main/java/cn/bunny/Demo8.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo8.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
diff --git a/demo1/src/main/java/cn/bunny/Demo9.java b/demo1/src/main/java/cn/bunny/file_dir/Demo9.java
similarity index 97%
rename from demo1/src/main/java/cn/bunny/Demo9.java
rename to demo1/src/main/java/cn/bunny/file_dir/Demo9.java
index 87acde9..dd826d3 100644
--- a/demo1/src/main/java/cn/bunny/Demo9.java
+++ b/demo1/src/main/java/cn/bunny/file_dir/Demo9.java
@@ -1,4 +1,4 @@
-package cn.bunny;
+package cn.bunny.file_dir;
 
 import java.io.File;
 import java.io.IOException;