diff --git a/DataStructures/Graphs/BellmanFord.java b/DataStructures/Graphs/BellmanFord.java
index 717cb2803031..61785acec06d 100644
--- a/DataStructures/Graphs/BellmanFord.java
+++ b/DataStructures/Graphs/BellmanFord.java
@@ -1,3 +1,5 @@
+package DataStructures.Graphs;
+
 import java.util.*;
 class BellmanFord
 /*Implementation of Bellman ford to detect negative cycles. Graph accepts inputs in form of edges which have 
diff --git a/DataStructures/Queues/LinkedQueue.java b/DataStructures/Queues/LinkedQueue.java
index 1c85937b9a06..dac13dcaaad6 100644
--- a/DataStructures/Queues/LinkedQueue.java
+++ b/DataStructures/Queues/LinkedQueue.java
@@ -1,4 +1,4 @@
-package DataStructures;
+package DataStructures.Queues;
 
 import java.util.NoSuchElementException;
 
diff --git a/DataStructures/Stacks/NodeStack.java b/DataStructures/Stacks/NodeStack.java
index c598bb8fcba1..616e6a1e1548 100644
--- a/DataStructures/Stacks/NodeStack.java
+++ b/DataStructures/Stacks/NodeStack.java
@@ -1,3 +1,4 @@
+package DataStructures.Stacks;
 /**
 * Implementation of a stack using nodes.
 * Unlimited size, no arraylist.
diff --git a/DataStructures/Stacks/StackArray.java b/DataStructures/Stacks/StackArray.java
index 88da42cd3dcb..4365dc448d2d 100644
--- a/DataStructures/Stacks/StackArray.java
+++ b/DataStructures/Stacks/StackArray.java
@@ -1,3 +1,5 @@
+package DataStructures.Stacks;
+
 /**
  * This class implements a Stack using a regular array.
  * <p>
diff --git a/DataStructures/Stacks/StackArrayList.java b/DataStructures/Stacks/StackArrayList.java
index afc804440403..666b9ea99055 100644
--- a/DataStructures/Stacks/StackArrayList.java
+++ b/DataStructures/Stacks/StackArrayList.java
@@ -1,3 +1,5 @@
+package DataStructures.Stacks;
+
 import java.util.ArrayList;
 
 /**
diff --git a/DataStructures/Stacks/StackOfLinkedList.java b/DataStructures/Stacks/StackOfLinkedList.java
index 5a2b8fa08258..60d8a1b0f7a0 100644
--- a/DataStructures/Stacks/StackOfLinkedList.java
+++ b/DataStructures/Stacks/StackOfLinkedList.java
@@ -1,5 +1,7 @@
 package DataStructures.Stacks;
 
+import java.util.NoSuchElementException;
+
 /**
  * @author Varun Upadhyay (https://github.com/varunu28)
  */
diff --git a/Maths/Pow.java b/Maths/Pow.java
index 7c0cad1afc9e..ac58fbbbe7cd 100644
--- a/Maths/Pow.java
+++ b/Maths/Pow.java
@@ -1,4 +1,4 @@
-package maths;
+package Maths;
 
 //POWER (exponentials) Examples (a^b)
 public class Pow {