The date() method of java.time.chrono.IsoChronology class is used get the local date according to ISO calendar system for the given year, month and day.
Syntax:
public LocalDate date(int prolepticYear, int month, int dayOfMonth)
Parameter: This method takes the following arguments as parameter.
- prolepticYear: integer propleptic year for the year field of ISO
- month: integer month for the month field of ISO
- day: integer day for the day field of ISO
Return Value: This method returns the local date according to Iso calendar system for the given year, month and day.
Exception: This method throws DateTimeException if the given field of day, month and year are unable to form a structured date.
Below are the examples to illustrate the date() method:
Example 1:
// Java program to demonstrate // date() method import java.util.*; import java.io.*; import java.time.*; import java.time.chrono.*; public class GFG { public static void main(String[] argv) { try { // creating and initializing LocalDate Object LocalDate lodate = LocalDate.now(); // getting IsoChronology used in LocalDate IsoChronology crono = lodate.getChronology(); // getting LocalDate for the // given date, month and year field // by using date() mehtod LocalDate date = crono.date( 1440 , 05 , 24 ); // display the result System.out.println( "LocalDate is: " + date); } catch (DateTimeException e) { System.out.println( "passed paramter can " + "not form a date" ); System.out.println( "Exception thrown: " + e); } } } |
LocalDate is: 1440-05-24
Example 2:
// Java program to demonstrate // date() method import java.util.*; import java.io.*; import java.time.*; import java.time.chrono.*; public class GFG { public static void main(String[] argv) { try { // creating and initializing LocalDate Object LocalDate lodate = LocalDate.now(); // getting IsoChronology used in LocalDate IsoChronology crono = lodate.getChronology(); // getting LocalDate for the // given date, month and year field // by using date() mehtod LocalDate date = crono.date( 2020 , 05 , 34 ); // display the result System.out.println( "LocalDate is: " + date); } catch (DateTimeException e) { System.out.println( "passed paramter can " + "not form a date" ); System.out.println( "Exception thrown: " + e); } } } |
passed paramter can not form a date Exception thrown: java.time.DateTimeException: Invalid value for DayOfMonth (valid values 1 - 28/31): 34
Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#date-int-int-int-
Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course.