比较日期是否小于24小时 [英] Compare if a date is less than 24 hours before
本文介绍了比较日期是否小于24小时的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我试图比较两个日历在java中,以确定他们中的一个是否=> 24小时前。
I am trying to compare two calendars in java to decide if one of them is >= 24 hours ago. I am unsure on the best approach to accomplish this.
//get todays date
Date today = new Date();
Calendar currentDate = Calendar.getInstance();
currentDate.setTime(today);
//get last update date
Date lastUpdate = profile.getDateLastUpdated().get(owner);
Calendar lastUpdatedCalendar = Calendar.getInstance();
lastUpdatedCalendar(lastUpdate);
//compare that last hotted was < 24 hrs ago from today?
推荐答案
您可以使用 Date.getTime(),下面是一个示例:
you could use Date.getTime(), here's an example:
public final static long MILLIS_PER_DAY = 24 * 60 * 60 * 1000L;
public static void main(String args[]) throws Exception {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date1 = sdf.parse("2009-12-31");
Date date2 = sdf.parse("2010-01-31");
boolean moreThanDay = Math.abs(date1.getTime() - date2.getTime()) > MILLIS_PER_DAY;
System.out.println(moreThanDay);
}
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