hacktoberfest Create tk4

tk4

@@ -0,0 +1,76 @@
+// Java Program for the above approach
+class GFG {
+
+	Node head;
+
+	/*Creating a new Node*/
+	class Node {
+		int data;
+		Node next;
+		public Node(int data)
+		{
+			this.data = data;
+			this.next = null;
+		}
+	}
+
+	/*Function to add a new Node*/
+	public void pushNode(int data)
+	{
+		Node new_node = new Node(data);
+		new_node.next = head;
+		head = new_node;
+	}
+
+	/*Displaying the elements in the list*/
+	public void printNode()
+	{
+		Node temp = head;
+		while (temp != null) {
+			System.out.print(temp.data + "->");
+			temp = temp.next;
+		}
+		System.out.print("Null"+"\n");
+	}
+
+	/*Finding the length of the list.*/
+	public int getLen()
+	{
+		int length = 0;
+		Node temp = head;
+		while (temp != null) {
+			length++;
+			temp = temp.next;
+		}
+		return length;
+	}
+
+	/*Printing the middle element of the list.*/
+	public void printMiddle()
+	{
+		if (head != null) {
+			int length = getLen();
+			Node temp = head;
+			int middleLength = length / 2;
+			while (middleLength != 0) {
+				temp = temp.next;
+				middleLength--;
+			}
+			System.out.print("The middle element is ["
+							+ temp.data + "]");
+			System.out.println();
+		}
+	}
+
+	public static void main(String[] args)
+	{
+		GFG list = new GFG();
+		for (int i = 5; i >= 1; i--) {
+			list.pushNode(i);
+			list.printNode();
+			list.printMiddle();
+		}
+	}
+}
+
+// This Code is contributed by lokesh (lokeshmvs21).