I have written posts about using Objects class: JDK 7: The New Objects Class and Java 7 Objects-Powered Compact Equals.

Obi Ezechukwu 's blog High-Octane Java recently featured the post Compact Equals , which compares an implementation of a Java class's overridden equals method in traditional form versus one ...

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