LinkedList implementation

Problem statement: LinkedList implementation in java !!

1. class A {
2. A n;
3. int data;
4. A(int data) {
5. this.data = data;
6. }
7. }
8. public class LinkedList {
9. A head;
10. 
    
11. /*public static void main(String[] args) {
12. 
    
13. add(1);
14. add(2);
15. print(head);
16. */
17. 
    
18. /*
19. A head = new A(1);
20. A h1 = new A(2);
21. A h2 = new A(3);
22. A h3 = new A(4);
23. A h4 = new A(5);
24. A h5 = new A(6);
25. 
    
26. head.n=h1; h1.n=h2; h2.n=h3;h3.n=h4;h4.n=h5;//h5.n=null;
27. 
    
28. print(head);
29. 
    
30. /*A head = new A();
31. head.data=1;
32. head.n=null;
33. 
    
34. A h1 = new A();
35. h1.data=2;
36. h1.n=null;
37. 
    
38. head.n=h1;
39. 
    
40. A h2 = new A();
41. h2.data=3;
42. h2.n=null;
43. 
    
44. h1.n=h2;
45. 
    
46. A h3 = new A();
47. h3.data=4;
48. h3.n=null;
49. 
    
50. h2.n=h3;
51. 
    
52. A h4 = new A();
53. h4.data=5;
54. h4.n=null;
55. 
    
56. h3.n=h4;
57. */
58. /* System.out.println(head.data); h.data;
59. System.out.println(head.n.data);h=h.n; h.data;
60. System.out.println(head.n.n.data); h=h.n.n;h.data;
61. System.out.println(head.n.n.n.data);h=h.n.n.n;h.data;
62. System.out.println(head.n.n.n.n.data);h=h.n.n.n.n;h.data;
63. 
    
64. print(head);
65. */
66. //}
67. 
    
68. // print the LinkedList
69. public  void print(A head){
70. A temp=head;
71. while(temp!=null){
72. System.out.println(temp.data);
73. temp=temp.n;
74. }
75. }
76. 
    
77. // add the element in LinkedList
78. public void add(int data) {
79. A new_node = new A(data);
80. 
    
81. if (head == null) {
82. head = new_node;
83. return;
84. }
85. A last = head;
86. while (last.n != null) {
87. last = last.n;
88. }
89. last.n = new_node;
90. }
91. 
    
92. // reverse the LinkedList
93. A reverse() {
94. A prev = null;
95. A current = head;
96. A next = null;
97. while (current != null) {
98. next = current.n;
99. current.n = prev;
100. prev = current;
101. current = next;
102. }
103. head = prev;
104. return head;
105. }
106. }

MainUser class:

1. public class MyLinkedList {
2. 
   
3. public static void main(String[] args) {
4. LinkedList l = new LinkedList();
5. l.add(1);
6. l.add(2);
7. 
   
8. l.print(l.head);
9. 
   
10. l.reverse();
11. System.out.println("-----------");
12. l.print(l.head);
13. }
14. }

Output:
1
2
-----------
2
1