I am using this blog post to build upon these examples to demonstrate the utility of Java 7’s Objects.equals (Object, Object) method and will demonstrate the usefulness of Objects.hash (Object ...

method provides the hash code of the provided Object as would be returned from its ultimate Object parent regardless of whether the passed-in object overrode the hashCode method .

Reference objects aren't just useful when memory is at a premium; they can also be used to provide slick caching abilities to any application.