public static String getBankNumberOfIban ( final String pstring ) { final String compressedIban = ibanCompress ( pstring ) ; final String country = StringUtils . substring ( compressedIban , 0 , 2 ) ; final IbanLengthDefinition length = IBAN_LENGTH_MAP . ibanLengths ( ) . get ( country ) ; return length == null ? null : StringUtils . substring ( compressedIban , length . getBankNumberStart ( ) , length . getBankNumberEnd ( ) ) ; }
get bank number of iban .