title: Is there a way to determine how many runnables are in a newFixedThreadPool Queue?
body: <p>I'm firing up </p>
  
  <pre><code>Executors.newFixedThreadPool(100);
  </code></pre>
  
  <p>in a main program and the producer is pumping in jobs faster than the consumers can keep up. Is there a way to see how many items are queued up in the underlying unbounded queue that the newFixedThreadPool uses?</p>