Understanding Hashing in Java: Why hashCode() and equals() Matter 👍 A lot of developers new to Collections understand how to use a HashSet — but not many understand the mechanics behind it. That is ...

If you’ve worked with Java collections like HashSet or HashMap, you’ve almost certainly heard this rule: “Always override equals() and hashCode().” But many developers follow this advice without fully ...

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 ...

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 ...