Basic structure and printing elements of Linked list in java

class Node{

     int data;

     Node next;

    

     Node(int data){

           this.data = data;

           this.next = null;

     }

}

public class LinkedList {

     Node head;

     public static void main(String[] args) {

           LinkedList list = new LinkedList();

           list.head = new Node(1);

           Node second = new Node(2);

           Node third = new Node(3);

          

           list.head.next = second;

           second.next = third;

          

           list.printList();

     }

      void printList() {

           Node node = head;

           //from start till last

           while (node!=null) {

                System.out.print(node.data);

                node = node.next;

                //to ignore last comma at last of list

                if(node!=null){

                     System.out.print(",");

                }

           }

     }

}                                                                   

Output-

1,2,3