private int compareVdcConfigVersion(String left,String right){
  if (left == null && right == null) {
    return 0;
  }
  if (left == null && right != null) {
    return -1;
  }
  if (left != null && right == null) {
    return 1;
  }
  return (int)(Long.parseLong(left) - Long.parseLong(right));
}

private int compareVdcConfigVersion ( String left , String right ) { if ( left == null && right == null ) { return 0 ; } if ( left == null && right != null ) { return - 1 ; } if ( left != null && right == null ) { return 1 ; } return ( int ) ( Long . parseLong ( left ) - Long . parseLong ( right ) ) ; }
compare vdc config version
