LocalDateTime

The class LocalDateTime is a combination of LocalDate and LocalTime that keeps such values as 2017-12-03T22:30. It still doesn’t store information on a time-zone. It could be used to store a date and time of a transaction in a payment system. As in the LocalTime class, time is represented to nanosecond precision.

LocalTime

There’s a special class to represent the time of day in Java. TheLocalTime class represents daytime in the hours-minutes-seconds format, such as 06:30 or 11:45:30. It doesn’t store information about the date or the time zone. Time is stored with nanosecond precision (for example, 13:45:30.123456789). TheLocalTime class could be used to store things like the opening and closing hours of a shop or a train schedule.