title: Convert String in 24 Hour time to 12 Hour AM PM Time
body: <p>Returned the exact String for "closing time" below from my json Result. It appears to be in 24hour time format. I did a little search around and noticed it is not in the desired format of HH:MM:SS. What's an efficient way to convert this to a 12Hour AM PM time. Thanks.`</p>
  
  <pre><code>String closingTime = "2100";
  //Desired output: String closingTime = "9:00 pm"
  </code></pre>