Linkedlist.java

 class Node {
     int data;
     Node next;

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


 public class Linkedlist {
    Node head;
    Linkedlist(){
     head = null;
    }
    public void add(int data){
         Node newNode = new Node(data);
         
         Node current = head;
         if(head == null){
              head = newNode;
         }
         else{
             while (current != null) {
                current = current.next;
     
        } 
        current = newNode; 
             
         }
    }

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

    } 
    void displays() {
        Node current = head;
        while (current != null) {
            System.out.print(current.data + " ");
            current = current.next;
        }
        System.out.println();
    }
 
    
}