title: Android Java : How to subtract two times?
body: <p>I  use some kind of stopwatch in my project and I have </p>
  
  <pre><code>start time ex: 18:40:10 h
  stop time  ex: 19:05:15 h
  </code></pre>
  
  <p>I need a result from those two values like <code>final time = stop - start</code></p>
  
  <p>I found some examples but they all are very confusing . </p>
  
  <p>Is there any simple solution ?</p>