問題描述

我正在嘗試從數據庫中獲取一些信息，然后使用該信息來獲取一些統計信息.

我想獲取基于小時間隔的統計信息，因此我創建了一個由兩個 Integer 小時和數據組成的 HashSet.

為了獲得正確的時間，我需要從數據庫中獲取時間.因此我需要創建某種數據/日歷對象.

現在由于 Date 已被棄用，我需要找到一種新的方法來設置時間.

有誰知道我如何做到這一點?

到目前為止，此解決方案有效:

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

但如上所述日期已被棄用，所以我想學習正確"的方法.

使用java.util.Calendar

日歷 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(日歷.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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