How to check if the difference between 2 dates is more than 20 minutes

Question

I have a datetime in a variable previous. Now i want to check if the previous datetime is more than twenty minutes before the current time.

Date previous = myobj.getPreviousDate();  Date now = new Date();  //check if previous was before 20 minutes from now ie now-previous >=20 

How can we do it?

Answer 1

Use

if (now.getTime() - previous.getTime() >= 20*60*1000) {     ... } 

Or, more verbose, but perhaps slightly easier to read:

import static java.util.concurrent.TimeUnit.*;  ...  long MAX_DURATION = MILLISECONDS.convert(20, MINUTES);  long duration = now.getTime() - previous.getTime();  if (duration >= MAX_DURATION) {     ... } 

Answer 2

Using Joda Time:

boolean result = Minutes.minutesBetween(new DateTime(previous), new DateTime())                         .isGreaterThan(Minutes.minutes(20));