How to get the difference between two JodaTime LocalTime stamps?

java jodatime localtime
Klausos Klausos picture Klausos Klausos · Mar 13, 2014 · Viewed 9.1k times · Source

I am using JodaTime LocalTime in order to specify times. How can I get the difference in minutes between two times?

LocalTime startT = new LocalTime(6,30);
LocalTime endT = new LocalTime(12,15);

// LocalTime duration = this.endT.minusMinutes(startT);
// int durationMinutes = duration.getMinutes();

Answer

Meno Hochschild picture Meno Hochschild · Mar 13, 2014

If you ask

How can I get the difference in minutes between two times?

then I would think of following more intuitive solution:

LocalTime startT = new LocalTime(6,30);
LocalTime endT = new LocalTime(12,15);
int minutes = Minutes.minutesBetween(startT, endT).getMinutes(); // 345m = 6h - 15m

The expression 

Period.fieldDifference(startT, endT).getMinutes()

will only yield -15 that means not taking in account the hour difference and hence not converting the hours to minutes. If the second expression is really what you want then the question should rather be like:

How can I get the difference between the minute-parts of two LocalTime-instances?

Updated for Java-8:

LocalTime startT = LocalTime.of(6,30);
LocalTime endT = LocalTime.of(12,15);

long minutes = ChronoUnit.MINUTES.between(startT, endT);

System.out.println(minutes); // output: 345

// Answer to a recommendation in a comment:
// Attention JSR-310 has no typesafety regarding units (a bad design choice)
// => UnsupportedTemporalTypeException: Unsupported unit: Minutes
minutes = Duration.between(startT, endT).get(ChronoUnit.MINUTES);

Related questions

Joda Time LocalTime of 24:00 end-of-day

We're creating a scheduling application and we need to represent someone's available schedule during the day, regardless of what time zone they are in. Taking a cue from Joda Time's Interval, which represents an interval in absolute time between two …

Read More
Converting a date string to a DateTime object using Joda Time library

I have a date as a string in the following format "04/02/2011 20:27:05". I am using Joda-Time library and would like to convert it to DateTime object. I did: DateTime dt = new DateTime("04/02/2011 20:27:05") But I'm getting the following error : Invalid format: "04/02/2011 14:42:17" is …

Read More
How to format Joda-Time DateTime to only mm/dd/yyyy?

I have a string "11/15/2013 08:00:00", I want to format it to "11/15/2013", what is the correct DateTimeFormatter pattern? I've tried many and googled and still unable to find the correct pattern. edit: I am looking for Joda-Time DateTimeFormatter, not Java's SimpleDateFormat..

Read More