Adler : Java Glossary

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 Adler32 class : available:

on the web at java.sun.com
in the current JDK 1.6.0_17 or in the old JDK 1.5.0_22 on your local Windows J: drive.

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