title: Using replaceAll function in Java 8 for date and timestamp
body: <p>I would like to set two different inputs from date and timestamp into a date in UTC at the end.  I am not sure if using <code>replaceAll</code> function would work.</p>
  
  <p>Inputs:</p>
  
  <ul>
  <li>string date = "06/04/2019" which the format is "MM/dd/yyyy"</li>
  <li>string timestamp = "15/03/2018 15:46:59.000386 PM -05:00" which the format
  is "dd/MM/yyyy hh:mm:ss.SSSSSS a XXX"</li>
  </ul>
  
  <p>Output:
      "06/04/2019 15:46:59.000386 PM -05:00" then transform it into UTC...</p>