title: what does object Calendar do?
body: <p>I had a test for object Calendar:</p>
  
  <pre><code>for (int i = 0; i &lt; 11; i++)
              System.out.println(calendar.get(i));
  
  
  output:
  1
  2011
  6
  28
  2
  6
  187
  4
  1
  1
  10
  </code></pre>
  
  <p>My question is how can that happen? There are also the same tricky problems for api <strong>calendar.get()</strong></p>