Write a Java program to implement a simple singly linked list

 public class LinkedList {

    Node head;

    static class Node {

        int data;

        Node next;

        Node(int d) {

            data = d;

            next = null;

        }

    }

    public void printList() {

        Node n = head;

        while (n != null) {

            System.out.print(n.data + " ");

            n = n.next;

        }

    }

    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();

    }

}