If you are fortunate enough to be using JDK 7 , the newly available Objects class is the obvious ( at least to me ) choice for implementing the "common" Java object methods such as equals (Object ...

The HashMap tutorial also includes some useful code snippets that help developers understand what's going on with a Java HashMap under the covers. For example, the following code used in the tutorial ...

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 ...