What's the next year of 2011-02-28?
<p>It's obvious that the next year of 2011-01-01 is 2012-01-01 and the next year of 2011-03-01 is 2012-03-01.</p>

<p>But, what's the next year of 2011-02-28? 2012-02-28 or 2012-02-29?</p>

<p>Likes, I keep the shares one year from 2011-02-28, what's the end date?</p>

<p>In java, I know that the previous year of 2012-02-29 ( Calendar.add(Calendar.YEAR, -1) ) is 2011-02-28. However, the next year of 2011-02-28 is 2012-02-28.</p>
