The example code and its corresponding output indicate that the identity hash code returned by System.identityHashCode(Object) can be different than the object’s hash code defined by an ...

This tutorial explains how a Java HashMap works internally and explores the challenges of implementing it, including buckets, collisions and hash codes.

A good resource on using EqualsBuilder and HashCodeBuilder in conjunction with Hibernate for equals () and hashCode () is available in Write Simpler equals and hashCode Java Methods Using ...