ldap - split function to change order -

i used methode treepath [dc=example,dc=com,ou=usres] , need make ou=usres,dc=example,dc=com tried methode change order

public static string changestring(string old) {     old = old.replace('[', ' ');     old = old.replace(']', ' ');     old.trim();     string array[] = old.split(",");     string result = "";     (int = 1; <= array.length; i++) {         if(i != 1)         result +=","+ array[array.length-i];         else         result += array[array.length-i];          } 

but ou=usres,dc=com,dc=example how can change position of ou=users

if using java, suggest use unboundid sdk. using dn class, can break down items public rdn[] getrdns(), returns rdn[]

then reorder rdn[] , create new dn dn(rdn... rdns).