public static boolean isNextDigit(final Buffer buffer) throws IndexOutOfBoundsException, IOException {
        if (buffer.hasReadableBytes()) {
            final char next = (char) buffer.peekByte();
            return next >= 48 && next <= 57;
        }

        return false;
    }
public static boolean isNextDigit ( final Buffer buffer ) throws IndexOutOfBoundsException , IOException { if ( buffer . hasReadableBytes ( ) ) { final char next = ( char ) buffer . peekByte ( ) ; return next >= 48 && next <= 57 ; } return false ; }
Check whether the next byte is a digit or not

@param buffer
@retur
@throws IOException
@throws IndexOutOfBoundsException