Warning by extending LinkedList class in Java
<p>I'm trying to extend LinkdList in Java through the following class definition:</p>

<pre><code>public class Roster extends LinkedList&lt;Teammate&gt;{

}
</code></pre>

<p>but I get the following warning by doing so:</p>

<pre><code>The serializable class Roster does not declare a static final serialVersionUID field of type long
</code></pre>

<p>What does that mean and how can I remove the warning?</p>
