Question

I was just wondering if there is a need of TimeSpan in java.util so that I can define how much hours,minutes and seconds are there in between these two times.

From this TimeSpan we can have a time interval between two times. like

TimeSpan getTimeSpan( Date before, Date after ){...}

or

long timeSpan = System.currentTimeMillis();
// ... long job
timeSpan = System.currentTimeMillis() - timeSpan;

TimeSpan ts = new TimeSpan(timeSpan);

and with this TimeSpan we can use it in SimpleDateFormat.

SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss");
format.format( timsSpan );

I am not sure if this is already been implemented in Java but yet undiscovered by me.

Answer 1

With JDK 8 date-time libraries in SDK has been enriched and you can use

Duration or Period

Interval from JodaTime will do..

A time interval represents a period of
time between two instants. Intervals
are inclusive of the start instant and
exclusive of the end. The end instant
is always greater than or equal to the
start instant.

Intervals have a fixed millisecond
duration. This is the difference
between the start and end instants.
The duration is represented separately
by ReadableDuration. As a result,
intervals are not comparable. To
compare the length of two intervals,
you should compare their durations.

An interval can also be converted to a
ReadablePeriod. This represents the
difference between the start and end
points in terms of fields such as
years and days.

Interval is thread-safe and immutable.