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What are time temporal fields in Java?
A temporal field is a field of date-time, such as month-of-year or hour-of-minute. These fields are represented by the TemporalField interface and the ChronoField class implements this interface.
Following are the list of various temporal fields regarding time supported by the ChronoField class −
| Field | Description |
|---|---|
| CLOCK_HOUR_OF_AMPM |
This field represents the clock hour of a day (am/pm). |
| AMPM_OF_DAY |
This field represents the ap/pm of the day. |
| CLOCK_HOUR_OF_DAY |
This field represents the clock hour of a day. |
| HOUR_OF_AMPM |
This field represents the hour of a day (am/pm). |
| HOUR_OF_DAY |
This field represents the hour of a day. |
| INSTANT_SECONDS |
This field represents the instant epoch seconds. |
| MICRO_OF_DAY |
This field represents the micro of a day. |
| MICRO_OF_SECOND |
This field represents the micro of a second. |
| MILLI_OF_DAY |
This field represents the milli of a day. |
| MILLI_OF_SECOND |
This field represents the milli of a second. |
| MINUTE_OF_DAY |
This field represents the minute of the day. |
| MINUTE_OF_HOUR |
This field represents the hour of the day. |
| MONTH_OF_YEAR |
This field represents the month of the year. |
| NANO_OF_DAY |
This field represents the nano of the day. |
| NANO_OF_SECOND |
This field represents the nano of the second. |
| OFFSET_SECONDS |
This field represents the offset from UTC/Greenwich. |
| PROLEPTIC_MONTH |
This field represents the proleptic-month. |
| SECOND_OF_DAY |
This field represents the second of the day. |
| SECOND_OF_MINUTE |
This field represents the second of the minute. |
The get() or getLong() methods of the classes LocalDate accepts a temporal field as a parameter and gets the value of the given field in the current object.
Example
import java.time.LocalTime;
import java.time.temporal.ChronoField;
public class Demo {
public static void main(String args[]) {
//Instantiating the LocalDateTime class
LocalTime lTime = LocalTime.now();
System.out.println(lTime);
int field = lTime.get(ChronoField.CLOCK_HOUR_OF_AMPM);
System.out.println("Hour of the day: "+field);
field = lTime.get(ChronoField.AMPM_OF_DAY);
System.out.println("Am or Pm: "+field);
field = lTime.get(ChronoField.CLOCK_HOUR_OF_DAY);
System.out.println("Hour of the day: "+field);
long epoch = lTime.getLong(ChronoField.MINUTE_OF_DAY);
System.out.println("Minute of the day: "+epoch);
field = lTime.get(ChronoField.MINUTE_OF_HOUR);
System.out.println("Minutes of the hour: "+field);
field = lTime.get(ChronoField.SECOND_OF_DAY);
System.out.println("Seconds of the day: "+field);
field = lTime.get(ChronoField.SECOND_OF_MINUTE);
System.out.println("Seconds of the minute: "+field);
}
}
Output
17:02:46.294 Hour of the day: 5 Am or Pm: 1 Hour of the day: 17 Minute of the day: 1022 Minutes of the hour: 2 Seconds of the day: 61366 Seconds of the minute: 46
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