title: adding hours in date time format java
body: <pre><code>SimpleDateFormat parser = new SimpleDateFormat("HH:mm");
  Date time1 = parser.parse("7:30");
  </code></pre>
  
  <p>Now if I want to add 2 more hours to <code>time1</code>, like:</p>
  
  <pre><code>7:30 + 2 = 9:30
  </code></pre>
  
  <p>how do I add the 2 hours?</p>