Represents an instant capturing the date, but not the time, nor the timezone. Created Date objects are frozen with Object.freeze() in constructor and thus immutable.

Represents an instant capturing the date, the time and the timezone identifier. Created {@ DateTime} objects are frozen with Object.freeze() in constructor and thus immutable.

Represents an ISO 8601 duration. Contains both date-based values (years, months, days) and time-based values (seconds, nanoseconds). Created Duration objects are frozen with Object.freeze() in constructor and thus immutable.

Represents an instant capturing the date and the time, but not the timezone. Created LocalDateTime objects are frozen with Object.freeze() in constructor and thus immutable.

Represents an instant capturing the time of day, but not the date, nor the timezone. Created LocalTime objects are frozen with Object.freeze() in constructor and thus immutable.

Represents an instant capturing the time of day, and the timezone offset in seconds, but not the date. Created Time objects are frozen with Object.freeze() in constructor and thus immutable.

Test if given object is an instance of Date class.

Test if given object is an instance of DateTime class.

Test if given object is an instance of Duration class.

Test if given object is an instance of LocalDateTime class.

Test if given object is an instance of LocalTime class.

Test if given object is an instance of Time class.