问题描述

我正在尝试从数据库中获取一些信息，然后使用该信息来获取一些统计信息.

我想获取基于小时间隔的统计信息，因此我创建了一个由两个 Integer 小时和数据组成的 HashSet.

为了获得正确的时间，我需要从数据库中获取时间.因此我需要创建某种数据/日历对象.

现在由于 Date 已被弃用，我需要找到一种新的方法来设置时间.

有谁知道我如何做到这一点?

到目前为止，此解决方案有效:

日历时间 = Calendar.getInstance();time.setTime(new Date(2012, 11, 12, 8, 10));int hour = time.get(Calendar.HOUR);System.out.println(小时);

但如上所述日期已被弃用，所以我想学习正确"的方法.

使用java.util.Calendar

日历 c = Calendar.getInstance();c.set(Calendar.DATE, 2);c.set(Calendar.HOUR_OF_DAY, 1);c.set(Calendar.MINUTE, 0);c.set(Calendar.SECOND, 0);c.set(日历.MILLISECOND, 0);

或使用 Joda Time http://joda-time.sourceforge.net/.p>

I am trying to get some information out of a database and then using that information to get some statistics.

I want to get statistics based on an interval of hours, therefore I have a created a HashSet made up of two Integers hour and data.

In order to get the correct hour I need to get the time out of the database. Therefore I need to create some sort of data / calendar object.

Now since Date has been deprecated I need to find a new way to set the hours.

Does anyone know how i can achive this?

So far this solution works:

Calendar time = Calendar.getInstance();
        time.setTime(new Date(2012, 11, 12, 8, 10));    
        int hour = time.get(Calendar.HOUR);
        System.out.println(hour);

But as stated above date has been deprecated so I want to learn the "correct" way to do it.

Using the java.util.Calendar

Calendar c = Calendar.getInstance();
c.set(Calendar.DATE, 2);
c.set(Calendar.HOUR_OF_DAY, 1);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);

Or use Joda Time http://joda-time.sourceforge.net/.

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