title: Error while instantiating 'Queue'
body: <p>I opened a class and I wrote:</p>
  
  <pre><code>private Queue&lt;Player&gt; players;
  </code></pre>
  
  <p>and then in the constructor:</p>
  
  <pre><code>this.players = new Queue&lt;Players&gt;();
  </code></pre>
  
  <p>but it says it's an error:</p>
  
  <blockquote>
    <p>cannot instantiate the type <code>Queue&lt;Player&gt;</code></p>
  </blockquote>
  
  <p>I created a class <code>Player</code> with constructor and everything and I also imported <code>Queue.</code></p>
  
  <p>What might be the problem?</p>