LinkedList high level implementation [i]

Problem statement: LinkedList high level implementation in java !

1. class Node4 {
2. Node4 next;
3. int data;
4. 
   
5. Node4(int data) {
6. this.data = data;
7. }
8. }
9. public class LinkedListHighLevelExe1 {
10. Node4 head;
11. 
    
12. public static void main(String[] args) {
13. LinkedListHighLevelExe1 l = new LinkedListHighLevelExe1();
14. l.add(3);
15. l.add(5);
16. l.add(8);
17. l.add(9);
18. l.print(l.head);
19. }
20. 
    
21. // add the element in LinkedList
22. public void add(int data) {
23. Node4 next = new Node4(data);
24. if (head == null) {
25. head = next;
26. return;
27. }
28. Node4 last = head;
29. while (last.next != null) {
30. last = last.next;
31. }
32. last.next = next;
33. }
34. // print the LinkedList
35. void print(Node4 next) {
36. Node4 temp = next;
37. while (temp != null) {
38. System.out.print(temp.data + "-->");
39. temp = temp.next;
40. }
41. }
42. }

Output:

3-->5-->8-->9-->