diff --git a/src/class07_10/Code01_FindFirstIntersectNode.java b/src/class06_10/Code01_FindFirstIntersectNode.java
similarity index 99%
rename from src/class07_10/Code01_FindFirstIntersectNode.java
rename to src/class06_10/Code01_FindFirstIntersectNode.java
index 9ee0227..473b4f8 100644
--- a/src/class07_10/Code01_FindFirstIntersectNode.java
+++ b/src/class06_10/Code01_FindFirstIntersectNode.java
@@ -1,4 +1,4 @@
-package class07_10;
+package class06_10;
 
 public class Code01_FindFirstIntersectNode {
 
diff --git a/src/class07_10/Code02_RecursiveTraversalBT.java b/src/class07_10/Code01_RecursiveTraversalBT.java
similarity index 96%
rename from src/class07_10/Code02_RecursiveTraversalBT.java
rename to src/class07_10/Code01_RecursiveTraversalBT.java
index ed73cc1..5027b7f 100644
--- a/src/class07_10/Code02_RecursiveTraversalBT.java
+++ b/src/class07_10/Code01_RecursiveTraversalBT.java
@@ -1,6 +1,6 @@
 package class07_10;
 
-public class Code02_RecursiveTraversalBT {
+public class Code01_RecursiveTraversalBT {
 
 	public static class Node {
 		public int value;
diff --git a/src/class07_10/Code03_UnRecursiveTraversalBT.java b/src/class07_10/Code02_UnRecursiveTraversalBT.java
similarity index 98%
rename from src/class07_10/Code03_UnRecursiveTraversalBT.java
rename to src/class07_10/Code02_UnRecursiveTraversalBT.java
index 604dc46..4b4e857 100644
--- a/src/class07_10/Code03_UnRecursiveTraversalBT.java
+++ b/src/class07_10/Code02_UnRecursiveTraversalBT.java
@@ -2,7 +2,7 @@ package class07_10;
 
 import java.util.Stack;
 
-public class Code03_UnRecursiveTraversalBT {
+public class Code02_UnRecursiveTraversalBT {
 
 	public static class Node {
 		public int value;