LinkedList_Execution.java

/*   Created by IntelliJ IDEA.
 *   Author: Kshitij Varshney (kshitijvarshne1)
 *   Date: 08-Feb-21
 *   Time: 11:00 AM
 *   File: Execution.java
 */

package feb08_21_NK.LinkedList;


public class Execution {
    public static void main(String[] args) {
        SinglyLinkedList list = new SinglyLinkedList();
        for (int i = 0; i < 5; i++) {
            list.insertAtBegin(new Node(i));
        }
        list.printSinglyLinkedList();
    }

}

LinkedList_Node.java

/*   Created by IntelliJ IDEA.
 *   Author: Kshitij Varshney (kshitijvarshne1)
 *   Date: 08-Feb-21
 *   Time: 10:55 AM
 *   File: Node.java
 */

package feb08_21_NK.LinkedList;

public class Node {
    int data;
    Node next; // self reference structure

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

LinkedList_SinglyLinkedList.java

/*   Created by IntelliJ IDEA.
 *   Author: Kshitij Varshney (kshitijvarshne1)
 *   Date: 08-Feb-21
 *   Time: 10:57 AM
 *   File: SinglyLinkedList.java
 */

package feb08_21_NK.LinkedList;

public class SinglyLinkedList {
    Node head;

    public SinglyLinkedList() {
        head = null;
    }

    public void insertAtBegin(Node newNode) {
        newNode.next = head;
        head = newNode;
    }

    public void printSinglyLinkedList() {
        Node temp = head;
        if (temp == null) {
            System.out.println("No data member");
        } else {
            while (temp != null) {
                System.out.print(temp.data + " -> ");
                temp = temp.next;
            }
            System.out.println();
        }
    }

    public void insertAtEnd(Node newNode) {
        if (head == null) {
            head = newNode;
            return;
        }
        Node temp = head;
        while (temp.next != null) {
            temp = temp.next;
        }
        temp.next = newNode;
        return;
        //System.out.println(temp.data);
    }

}