title: How to convert Object as timestamp to formatted date
body: <p>How to convert Object as timestamp to formatted date?</p>
  
  <p>I have printed out timestamp(</p>
  
  <blockquote>
    <p>1395500668</p>
  </blockquote>
  
  <p>) that is in Object.
  I want to format this and print it out like </p>
  
  <blockquote>
    <p>yyyy-MM-dd H:m:s</p>
  </blockquote>