public static String normalizeWwn(String wwn){
  wwn=StringUtils.lowerCase(wwn);
  wwn=StringUtils.replace(wwn,":","");
  wwn=StringUtils.leftPad(wwn,16,'0');
  return wwn;
}

public static String normalizeWwn ( String wwn ) { wwn = StringUtils . lowerCase ( wwn ) ; wwn = StringUtils . replace ( wwn , ":" , "" ) ; wwn = StringUtils . leftPad ( wwn , 16 , '0' ) ; return wwn ; }
converts a wwn to a normalized form for ease of comparison .
