title: how to get yesterday date
body: <p>I want to get yesterday date or date which is of not today but of the past. I am using this code - </p>
  
  <pre><code>Calendar calendarMessage = Calendar.getInstance();
          Calendar calendarToday = Calendar.getInstance();
          calendarMessage.setTime(date);
          return calendarMessage.get(Calendar.YEAR) == calendarToday.get(Calendar.YEAR) &amp;&amp;
                  calendarMessage.get(Calendar.DAY_OF_YEAR) == calendarToday.get(Calendar.DAY_OF_YEAR);
  </code></pre>
  
  <p>Can you please help me in this?</p>