java - change element position in linkedList -

i know can change element position creating new node , play node references. how can change element position without creating or deleting node, play node references? many thanks!

    public class linkedlist<e extends comparable<e>> implements iterable<e>     {         private node head; // reference first node         private int n;     // number of elements stored in list          private class node         {              public e item;             public node next;              public node()             {                 item = null;  next = null;             }             public node(e e, node ptr)             {                 item = e;  next = ptr;             }         }      public boolean move(e e){         node current=head;         while(current !=null){             if(e.equals(current.item)){                 system.out.println("true");                 return true; *****then how move node front? without creating , deleting nodes******             }             current=current.next;         }         system.out.println("false");         return false; 

your algorithm should this

int count = 1;   // change 0 if zero-indexed node p = null;   // previous node n = head;   // current  while(count < k) {     if(n.next != null) {         p = n;         n = n.next;         count++;     } else         break; }  if(count == k){     p.next = n.next;     n.next = head;     head = n; }