Adler : Java Glossary

by Roedy Green ©1996-2008 Canadian Mind Products
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Adler

A 32-bit checksum/digest that is almost as reliable in detecting changes as a CRC-32, but is much quicker to compute. Here is how you compute it:

Consider using an an Adlerian digest for your hashCode when you can reduce the key part of your object to a long string of bytes.

Beware Adler32.update( int )! It accepts only an unsigned 8-bit byte packed in the low order bits of an int. You can’t feed update() a 32-bit int.

Sun’s Javadoc on the Adler32 class : available:

on the web at java.sun.com
in the current JDK 1.6.0_07 or in the old JDK 1.5.0_16 or in the beta JDK 1.6.0_10 on your local J: drive.

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