JavaFX supports the notion of duration as a fundamental type in the language.  The type Duration is used anywhere a unit of time length is needed.  For instance, duration is heavily used in the JavaFX animation API to express the length of animated segments. his type represent a unit of time. Duration literals can be expressed with several units include ms, s, m, and h for millisecond, second, minute, hour respectively. Here are some examples of literals:

As a value type, durations can participate in expressions