Deleting duplicates a linked lists Java -

i trying implement method deletes duplicates linked list. i've managed take care of tail. in other words, if tail's data duplicate, program wouldn't throw exception error. now, i'm trying take care of head such if head's data duplicate, want set head = head.next duplicate no longer in linked list. method deleteduplicates not handle head. have suggestions fix problem?

class node {         private node next = null;          private int data;           public node(int d) {             data = d;          }          void appendtotail(int d) {             node end = new node(d);              node n = this;               while(n.next != null) {                 n = n.next;              }             n.next = end;          }          void print() {             node n = this;              while(n != null) {                 system.out.println(n.data);                  n = n.next;              }         }          node deleteduplicates(node head, int d) {             node n = head;             if(n.data == d) {                 head = head.next;                  n = n.next;              }             while(n != null) {                 if(n.next.data == d) {                     if(n.next == null && n.next.data == d) {                         return head;                     }                     n.next = n.next.next;                 }                 n = n.next;              }             return head;          }          public static void main(string [] args) {             node x = new node(9);              x.appendtotail(5);             x.appendtotail(9);             x.appendtotail(6);             x.appendtotail(9);               x.appendtotail(7);             x.appendtotail(9);               x.appendtotail(8);              x.appendtotail(9);              x.deleteduplicates(x, 9);              x.print();          }        } 

the problem in code haven't reassigned head after deletion. if modify follows, think head deletion problem solved.

x = x.deleteduplicates(x, 9);

needless say, there other efficient methods hashing can used bring down time complexity of code.