Modified Data Structures/Trees folder .java file name and class name

Data Structures/Trees/AVLTree.java

@@ -1,4 +1,4 @@
-public class AVLtree {
+public class AVLTree {
  
     private Node root;
  
@@ -200,7 +200,7 @@ public class AVLtree {
     }
  
     public static void main(String[] args) {
-        AVLtree tree = new AVLtree();
+        AVLTree tree = new AVLTree();
  
         System.out.println("Inserting values 1 to 10");
         for (int i = 1; i < 10; i++)

Data Structures/Trees/LevelOrderTraversal.java

@@ -9,12 +9,12 @@ class Node
     }
 }
  
-class BinaryTree
+public class LevelOrderTraversal
 {
     // Root of the Binary Tree
     Node root;
  
-    public BinaryTree()
+    public LevelOrderTraversal()
     {
         root = null;
     }
@@ -65,7 +65,7 @@ class BinaryTree
     /* Driver program to test above functions */
     public static void main(String args[])
     {
-       BinaryTree tree = new BinaryTree();
+       LevelOrderTraversal tree = new LevelOrderTraversal();
        tree.root= new Node(1);
        tree.root.left= new Node(2);
        tree.root.right= new Node(3);

Data Structures/Trees/LevelOrderTraversalQueue.java

@@ -14,7 +14,7 @@ class Node {
 }
  
 /* Class to print Level Order Traversal */
-class BinaryTree {
+public class LevelOrderTraversalQueue {
  
     Node root;
  
@@ -49,7 +49,7 @@ class BinaryTree {
     {
         /* creating a binary tree and entering 
          the nodes */
-        BinaryTree tree_level = new BinaryTree();
+    	LevelOrderTraversalQueue tree_level = new LevelOrderTraversalQueue();
         tree_level.root = new Node(1);
         tree_level.root.left = new Node(2);
         tree_level.root.right = new Node(3);

Data Structures/Trees/PrintTopViewofTree.java

@@ -78,7 +78,7 @@ class Tree
 }
  
 // Driver class to test above methods
-public class Main
+public class PrintTopViewofTree
 {
     public static void main(String[] args)
     {

Data Structures/Trees/ValidBSTOrNot.java

@@ -10,7 +10,7 @@ class Node
     }
 }
  
-public class BinaryTree
+public class ValidBSTOrNot
 {
     //Root of the Binary Tree
     Node root;
@@ -47,7 +47,7 @@ public class BinaryTree
     /* Driver program to test above functions */
     public static void main(String args[])
     {
-        BinaryTree tree = new BinaryTree();
+        ValidBSTOrNot tree = new ValidBSTOrNot();
         tree.root = new Node(4);
         tree.root.left = new Node(2);
         tree.root.right = new Node(5);