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());
  }
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.

@param pstring string with iban
@return bank number