implements expected here error
<p>hey, i have to create a <code>TwoStacksQueue.java</code> that creates a queue using two stacks.</p>

<p>i just want to know how to implement <code>Stack.java</code> into <code>TwoStacksQueue.java</code>.</p>

<p>this is what i have:</p>

<pre><code>public class TwoStacksQueue&lt;Item&gt; implements Stack&lt;Item&gt;
</code></pre>
