diff --git a/4. Fourth_Semester/Algorithms-Design-2(AD-2)/Lab Class 4/BinarySearchTree.java b/4. Fourth_Semester/Algorithms-Design-2(AD-2)/Lab Class 04/BinarySearchTree.java
similarity index 100%
rename from 4. Fourth_Semester/Algorithms-Design-2(AD-2)/Lab Class 4/BinarySearchTree.java
rename to 4. Fourth_Semester/Algorithms-Design-2(AD-2)/Lab Class 04/BinarySearchTree.java