問(wèn)題描述

我正在嘗試從數(shù)據(jù)庫(kù)中獲取一些信息，然后使用該信息來(lái)獲取一些統(tǒng)計(jì)信息.

我想獲取基于小時(shí)間隔的統(tǒng)計(jì)信息，因此我創(chuàng)建了一個(gè)由兩個(gè) Integer 小時(shí)和數(shù)據(jù)組成的 HashSet.

為了獲得正確的時(shí)間，我需要從數(shù)據(jù)庫(kù)中獲取時(shí)間.因此我需要?jiǎng)?chuàng)建某種數(shù)據(jù)/日歷對(duì)象.

現(xiàn)在由于 Date 已被棄用，我需要找到一種新的方法來(lái)設(shè)置時(shí)間.

有誰(shuí)知道我如何做到這一點(diǎn)?

到目前為止，此解決方案有效:

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

但如上所述日期已被棄用，所以我想學(xué)習(xí)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/.

這篇關(guān)于設(shè)置和獲取小時(shí)、分鐘、秒的正確方法的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！