public static String format(Double nr){
  if (nr == null) {
    return PLACEHOLDER_NULL;
  }
  return String.format(FORMAT_NUMBER,nr);
}

public static String format ( Double nr ) { if ( nr == null ) { return PLACEHOLDER_NULL ; } return String . format ( FORMAT_NUMBER , nr ) ; }
formats a given number in a default format ( 3 decimals , padded left to 10 characters ) .
