How to calculate CRC by using java

Hi my friends, I am working on a problem about CRC code computation. But I am getting stuck on how to perform the division in java. For example: one text file contains this infomation
110101 divisor
1010001101 message
the output of the program should be the CRC code, in this case the output is 101000110101110 where the last 5 digits are the CRC code which is the remainder of the message divided by the divisor. Can someone help me with this problem. Thanks a lot!!
Cheers

Thanks , this helps , but I still do not quite understand how to use java do the CRC(in CRC, it more likes XOR logic,i.e x= 0 y= 0, x-y= 0; x=0, y=1, x-y=1;x= 1 y= 0, x-y= 1;x= 1 y=1, x-y= 0). Could u explain more clearly?? thanks very much.
Cheers

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