List.java

import java.util.*;

class Node {
    int data;
    Node next;

    Node(int data) {
        this.data = data;
        this.next = null;
    }
}

public class List {
    static Node head;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List obj = new List();

        do {

            System.out.println("Enter the value:");
            int val = sc.nextInt();
            sc.nextLine();
            obj.append(val);
            System.out.println("Do you want to add another node? Type Yes/No");

        } while (sc.nextLine().equalsIgnoreCase("yes"));

        System.out.print("The elements in the linked list are: ");
        obj.display();
        obj.Reverse();
        System.out.println();
        System.out.print("The elements in the reversed linked list are : ");
        obj.display();

    }

    public void append(int data) {

        Node newNode = new Node(data);
        Node current = head;
        if (head == null) {
            head = newNode;
            return;
        } else {
            while (current.next != null) {
                current = current.next;
            }
            current.next = newNode;
            return;
        }
    }

    public void display() {
        Node temp = head;
        while (temp != null) {
            System.out.print(temp.data + " ");
            temp = temp.next;
        }
    }

    public Node Reverse() {
        Node prev = null;
        Node current = head;
        Node next = null;
        while (current != null) {
            next = current.next;
            current.next = prev;
            prev = current;
            current = next;
        }
        head = prev;
        return head;

    }
}