Time difference between two calendar dates

Question

I am looking for to calculate the time difference between two calendar dates and need the result difference in minutes. Below is what I am trying but it says: can't apply - operator. My page.getLastModified().getTime() gives me Calendar object. Any idea how can I achieve this.

long lastModified = page.getLastModified().getTime() - Calendar.getInstance().getTime();

score 3 · Accepted Answer · answered Mar 14 '15 at 18:08

getTime() returns Date instance and there is no overloaded - operator for Date. You may try with getTimeInMillis() to get difference milliseconds between two dates. You can later convert these milliseconds to minutes for instance with

TimeUnit.MILLISECONDS.toMinutes(durationInMillis)

score -1 · Answer 2 · edited May 23 '17 at 11:44

-1

I generally make use of

Joda Time

Simply because it has functions to give you the time between two dates.

Read into this previous post Usage for more info on how to.

edited May 23 '17 at 11:44

Community

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answered Mar 14 '15 at 18:14

Koen Demonie

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I think it might be better to give a quick example of the method(s) you speak of doing that. It may be better as a comment otherwise; this form is really just "link-only". – ChiefTwoPencils Mar 14 '15 at 18:16
Yes, was working on it. I knew the post about how to already existed here somewhere... TY ! :) – Koen Demonie Mar 14 '15 at 18:17
Java 8 time replaces Joda Time, so I wouldn't recommend it for anything new. – David Ehrmann Jan 31 '19 at 07:22

Time difference between two calendar dates

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