Time Update Application
<p>I am trying to make a digital clock in android.</p>

<p>I looked into the Time and Date classes.</p>

<p>However I cannot find any API that is tells me how to obtain when a minute has passed?
For e.g. when working with locationManagers,</p>

<pre><code>  public void onLocationChanged(Location location) 
</code></pre>

<p>is called when new location is available.</p>

<p>Similarly I am looking for something that is called when time changes, where time is in format hh:mm or hh:mm:ss.</p>
