The isBefore() method of ChronoZonedDateTime interface in Java is used to check if the date, passed as the parameter, is before this ChronoZonedDateTime instance or not. It returns a boolean value showing the same.
Syntax:
public boolean isBefore(ChronoZonedDateTime otherDate)
Parameter: This method accepts a parameter otherDate which specifies the other date-time to be compared to this ChronoZonedDateTime. It should not be null.
Returns: The function returns boolean value showing if this date-time is before the specified date-time.
Below programs illustrate the ChronoZonedDateTime.isBefore() method:
Program 1:
// Program to illustrate the isBefore() method import java.util.*;import java.time.*;import java.time.chrono.*; public class GfG { public static void main(String[] args) { // Parses the date ChronoZonedDateTime dt1 = ZonedDateTime.parse( "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]"); // Prints the date System.out.println(dt1); // Parses the date ChronoZonedDateTime dt2 = ZonedDateTime.parse( "2018-10-06T19:21:12.123+05:30[Asia/Calcutta]"); // Prints the date System.out.println(dt2); // Compares both dates System.out.println(dt1.isBefore(dt2)); }} |
Output:
2018-12-06T19:21:12.123+05:30[Asia/Calcutta] 2018-10-06T19:21:12.123+05:30[Asia/Calcutta] false
Program 2:
// Program to illustrate the isBefore() method import java.util.*;import java.time.*;import java.time.chrono.*; public class GfG { public static void main(String[] args) { // Parses the date ChronoZonedDateTime dt1 = ZonedDateTime.parse( "2018-10-06T19:21:12.123+05:30[Asia/Calcutta]"); // Prints the date System.out.println(dt1); // Parses the date ChronoZonedDateTime dt2 = ZonedDateTime.parse( "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]"); // Prints the date System.out.println(dt2); // Compares both dates System.out.println(dt1.isBefore(dt2)); }} |
Output:
2018-10-06T19:21:12.123+05:30[Asia/Calcutta] 2018-12-06T19:21:12.123+05:30[Asia/Calcutta] true
