Android Convert Unix Time to GMT time
<p>I'm having trouble in converting a unix time into GMT.</p>

<p>I have the following code, but I would like to know how to vice versa it.  </p>

<pre><code>    public static String GetUnixTime() 
    { 
                 Calendar calendar = Calendar.getInstance(); 
                 long now = calendar.getTimeInMillis(); 

               return Long.toString(now);
    } 
</code></pre>
