Brandon Reeser thinks this is interesting: result = 31 * result + c; From 3. Methods Common to All Objects from Effective Java, 2nd Edition by Joshua Bloch Publisher: Addison-Wesley Professional Released: May 2008 Note test Share this highlight http://www.safaribooksonline.com/a/effective-java-2nd/14099/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Have an account? Sign in. Minimise Unlock the rest of Effective Java, 2nd Edition and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.