Compare if a date is less than 24 hours before
calendar, java
Solution
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);
}
Problem
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 today's 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? ```