title: How to get a meaningful result from subtracting 2 nanoTime objects?
body: <p>I created a filter that monitors the length of a request.</p>
  
  <pre><code>long start = System.nanoTime();
  
  ...
  
  long end = System.nanoTime();
  </code></pre>
  
  <p>How can I get the number of milliseconds from this now?</p>