Difference of two Joda LocalDateTimes

Question

I\'ve got 2 Joda LocalDateTime objects and need to produce a 3rd that represents the difference between them:

LocalDateTime start = getStartLoca         


        

Answer 1

I found a workaround by using following steps:

1. Take two LocalDateTime objects as Start and End
2. Convert both of them to Instant object such as start.toInstant(ZoneOffset.UTC);
3. Calculate the Duration using Duration.between(instant t1, instant t2)
4. Convert it into nanoseconds or milliseconds or seconds using various conversion methods. Nanoseconds can be calculated as Duration.toNanos()

I have provided a full example below.

public long getDuration(LocalDateTime start, LocalDateTime end) {

    //convert the LocalDateTime Object to an Instant 
    Instant startInstant = start.toInstant(ZoneOffset.UTC);         
    Instant endInstant   =   end.toInstant(ZoneOffset.UTC);

    //difference between two Instants is calculated
    //convert to nano seconds or milliseconds 
    long duration=Duration.between(startInstant, endInstant).toNanos();

    return duration;
}