[Biojava-l] CRC64Checksum example

[Michael Thon]

Hi all - I need to compute a crc64 for some sequences and I thought  
that org.biojavax.utils.CRC64Checksum could do this for me.  Java  
throws a NullPointerException when I try to do:
   crc.update(seq);
where crc is a CRC64Checksum object and seq is a String containing a  
protein sequence.

Does anyone have some example code showing how to compute a crc using  
this class?
Many thanks
Mike Thon