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What are date 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 date supported by the ChronoField class −
| Field | Description |
|---|---|
| ALIGNED_DAY_OF_WEEK_IN_MONTH | This field represents the day of the week with in a month. |
| ALIGNED_DAY_OF_WEEK_IN_YEAR | This field represents the aligned day of a week in an year. |
| ALIGNED_WEEK_OF_MONTH | This field represents the aligned wee of a month. |
| ALIGNED_WEEK_OF_YEAR | This field represents the aligned week of an year. |
| DAY_OF_MONTH | This field represents the day of a month. |
| DAY_OF_WEEK | This field represents the day of a week. |
| DAY_OF_YEAR | This field represents the day of a year. |
| EPOCH_DAY | This field represents the epoch day of an year. |
| ERA | This field represents the era of the year. |
| YEAR | This field represents the year. |
| YEAR_OF_ERA | This field represents the year of the era. |
The get() or getLong() methods of the classes LocalDate and LocaldateTime accepts a temporal field as a parameter and gets the value of the given field in the current object.
Example
import java.time.LocalDate;
import java.time.temporal.ChronoField;
public class Demo {
public static void main(String args[]) {
//Instantiating the LocalDate class
LocalDate lDate = LocalDate.now();
int field = lDate.get(ChronoField.DAY_OF_MONTH);
System.out.println("Day of the month: "+field);
field = lDate.get(ChronoField.DAY_OF_WEEK);
System.out.println("Day of the month: "+field);
field = lDate.get(ChronoField.DAY_OF_YEAR);
System.out.println("Day of the month: "+field);
long epoch = lDate.getLong(ChronoField.EPOCH_DAY);
System.out.println("Day of the month: "+epoch);
field = lDate.get(ChronoField.ALIGNED_DAY_OF_WEEK_IN_MONTH);
System.out.println("Week in the month: "+field);
field = lDate.get(ChronoField.ALIGNED_DAY_OF_WEEK_IN_YEAR);
System.out.println("Day of the week in an year: "+field);
field = lDate.get(ChronoField.ERA);
System.out.println("Era: "+field);
}
}Output
Day of the month: 11 Day of the month: 3 Day of the month: 316 Day of the month: 18577 Week in the month: 4 Day of the week in an year: 1 Era: 1
Example
import java.time.DayOfWeek;
import java.time.LocalTime;
import java.time.Month;
import java.time.Year;
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 = Year.of(2019).get(ChronoField.YEAR);
System.out.println("Year: "+field);
field = Month.of(8).get(ChronoField.MONTH_OF_YEAR);
System.out.println("Year: "+field);
field = DayOfWeek.of(3).get(ChronoField.DAY_OF_WEEK);
System.out.println("Year: "+field);
}
}Output
20:01:43.171 Year: 2019 Year: 8 Year: 3
Updated on: 06-Feb-2021
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