Java Arrays, Collections, Sets and Maps fit into the category of  xx objects?
<p>Is it fair to group the following:</p>

<pre><code>Arrays, Collections, Sets, Maps
</code></pre>

<p>into a group called Collections or is there another single word or two words (other than object) that best describes Arrays, Collections, Sets and Maps.</p>

<p>Sorry if this is not the right category or not a suitable question. I am learning about these topics and need to find a single word that best describes all of these. </p>
