###The hashCode Contract Quoting the source: The general contract of hashCode is: Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode ...

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

I previously blogged on the Apache Commons ToStringBuilder and discussed how it takes away much of the tedium normally associated with implementing toString methods. While implementing toString() does ...