In this article, we will learn how to check whether one ZonedDateTime is After another ZonedDateTime using ZonedDateTime.isAfter() method in Java 1.8 version
Compare two ZonedDateTime using isAfter() method :
- If there are two ZonedDateTime and the requirement is to check whether one ZonedDateTime is after another ZonedDateTime, then isAfter() method can be used
- isAfter((ChronoZonedDateTime) – checks if the invoking ZonedDateTime is after the specified ZonedDateTime
- Comparison results –
- Returns true, if invoking ZonedDateTime is after the specified ZonedDateTime
- Returns false, if invoking ZonedDateTime is not after the specified ZonedDateTime
- Always returns false for self comparing ZonedDateTime
- Lets see an example for comparing two ZonedDateTime using isAfter() method
CheckZonedDateTimeIsAfterAnotherZonedDateTime.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.ZoneId;
import java.time.ZonedDateTime;
public class CheckZonedDateTimeIsAfterAnotherZonedDateTime {
public static void main(String[] args) {
// 1. get Current Zoned Date/time
ZoneId zoneIdLocal = ZoneId.systemDefault();
ZonedDateTime currentZonedDateTime = ZonedDateTime.of(2022, 8, 15, 12, 30, 30, 500, zoneIdLocal);
System.out.println("1. Current Zoned Date/time is = " + currentZonedDateTime);
// 2. form Past Date/time
ZoneId zoneIdPast = ZoneId.of("Australia/Sydney");
ZonedDateTime pastZonedDateTime = ZonedDateTime.of(2022, 8, 15, 12, 30, 30, 500, zoneIdPast);
System.out.println("2. Past Zoned Date/time is = " + pastZonedDateTime);
// 3. form Future Date/time
ZoneId zoneIdFuture = ZoneId.of("America/Chicago");
ZonedDateTime futureZonedDateTime = ZonedDateTime.of(2022, 8, 15, 12, 30, 30, 500, zoneIdFuture);
System.out.println("3. Future Zoned Date/time is = " + futureZonedDateTime);
// 4. isAfter() - LocalDateTime comparison
System.out.println("\n\n4. Comparing 2 LocalDateTime using isAfter() method :- \n");
// 4.1 check whether currentZonedDateTime isAfter futureZonedDateTime
boolean isAfter1 = currentZonedDateTime.isAfter(futureZonedDateTime);
System.out.println("4.1 Current Date/time (" + currentZonedDateTime
+ ") \n\t\t is After Future Date/time (" + futureZonedDateTime + ") ? "
+ isAfter1);
// 4.2 check whether currentZonedDateTime isAfter pastZonedDateTime
boolean isAfter2 = currentZonedDateTime.isAfter(pastZonedDateTime);
System.out.println("4.2 Current Date/time (" + currentZonedDateTime
+ ") \n\t\t is After Past Date/time (" + pastZonedDateTime + ") ? "
+ isAfter2);
// 4.3 check whether pastZonedDateTime isAfter currentZonedDateTime
boolean isAfter3 = pastZonedDateTime.isAfter(currentZonedDateTime);
System.out.println("4.3 Past Date/time (" + pastZonedDateTime
+ ") \n\t\t is After Current Date/time (" + currentZonedDateTime + ") ? "
+ isAfter3);
// 4.4 check whether pastZonedDateTime isAfter futureZonedDateTime
boolean isAfter4 = pastZonedDateTime.isAfter(futureZonedDateTime);
System.out.println("4.4 Past Date/time (" + pastZonedDateTime
+ ") \n\t\t is After Future Date/time (" + futureZonedDateTime + ") ? "
+ isAfter4);
// 4.5 check whether futureZonedDateTime isAfter currentZonedDateTime
boolean isAfter5 = futureZonedDateTime.isAfter(currentZonedDateTime);
System.out.println("4.5 Future Date/time (" + futureZonedDateTime
+ ") \n\t\t is After Current Date/time (" + currentZonedDateTime + ") ? "
+ isAfter5);
// 4.6 check whether futureZonedDateTime isAfter pastZonedDateTime
boolean isAfter6 = futureZonedDateTime.isAfter(currentZonedDateTime);
System.out.println("4.6 Future Date/time (" + futureZonedDateTime
+ ") \n\t\t is After Past Date/time (" + pastZonedDateTime + ") ? "
+ isAfter6);
// 5. isAfter() - self LocalDateTime comparison
System.out.println("\n\n5. Self comparing LocalDateTime using isAfter() method :- \n");
// 5.1 check whether currentZonedDateTime isAfter currentZonedDateTime
boolean isAfter7 = currentZonedDateTime.isAfter(currentZonedDateTime);
System.out.println("5.1 Current Date/time (" + currentZonedDateTime
+ ") \n\t\t is After Current Date/time (" + currentZonedDateTime + ") ? "
+ isAfter7);
// 5.2 check whether pastZonedDateTime isAfter pastZonedDateTime
boolean isAfter8 = pastZonedDateTime.isAfter(pastZonedDateTime);
System.out.println("5.2 Past Date/time (" + pastZonedDateTime
+ ") \n\t\t is After Past Date/time (" + pastZonedDateTime + ") ? "
+ isAfter8);
// 5.3 check whether futureZonedDateTime isAfter futureZonedDateTime
boolean isAfter9 = futureZonedDateTime.isAfter(futureZonedDateTime);
System.out.print("5.3 Future Date/time (" + futureZonedDateTime
+ ") \n\t\t is After Future Date/time (" + futureZonedDateTime + ") ? "
+ isAfter9);
}
}
Output:
1. Current Zoned Date/time is = 2022-08-15T12:30:30.000000500+05:30[Asia/Calcutta]
2. Past Zoned Date/time is = 2022-08-15T12:30:30.000000500+10:00[Australia/Sydney]
3. Future Zoned Date/time is = 2022-08-15T12:30:30.000000500-05:00[America/Chicago]
4. Comparing 2 LocalDateTime using isAfter() method :-
4.1 Current Date/time (2022-08-15T12:30:30.000000500+05:30[Asia/Calcutta])
is After Future Date/time (2022-08-15T12:30:30.000000500-05:00[America/Chicago]) ? false
4.2 Current Date/time (2022-08-15T12:30:30.000000500+05:30[Asia/Calcutta])
is After Past Date/time (2022-08-15T12:30:30.000000500+10:00[Australia/Sydney]) ? true
4.3 Past Date/time (2022-08-15T12:30:30.000000500+10:00[Australia/Sydney])
is After Current Date/time (2022-08-15T12:30:30.000000500+05:30[Asia/Calcutta]) ? false
4.4 Past Date/time (2022-08-15T12:30:30.000000500+10:00[Australia/Sydney])
is After Future Date/time (2022-08-15T12:30:30.000000500-05:00[America/Chicago]) ? false
4.5 Future Date/time (2022-08-15T12:30:30.000000500-05:00[America/Chicago])
is After Current Date/time (2022-08-15T12:30:30.000000500+05:30[Asia/Calcutta]) ? true
4.6 Future Date/time (2022-08-15T12:30:30.000000500-05:00[America/Chicago])
is After Past Date/time (2022-08-15T12:30:30.000000500+10:00[Australia/Sydney]) ? true
5. Self comparing LocalDateTime using isAfter() method :-
5.1 Current Date/time (2022-08-15T12:30:30.000000500+05:30[Asia/Calcutta])
is After Current Date/time (2022-08-15T12:30:30.000000500+05:30[Asia/Calcutta]) ? false
5.2 Past Date/time (2022-08-15T12:30:30.000000500+10:00[Australia/Sydney])
is After Past Date/time (2022-08-15T12:30:30.000000500+10:00[Australia/Sydney]) ? false
5.3 Future Date/time (2022-08-15T12:30:30.000000500-05:00[America/Chicago])
is After Future Date/time (2022-08-15T12:30:30.000000500-05:00[America/Chicago]) ? false
Related Articles:
- Java 8 – ZonedDateTime with method details and examples
- Java 8 – How to get Date, Time and Zone fields from ZonedDateTime ?
- Java 8 – How to form ZonedDateTime passing Date, Time and Zone fields ?
- Java 8 – How to form ZonedDateTime passing LocalDate, LocalTime and ZoneId ?
- Java 8 – How to form ZonedDateTime passing LocalDateTime and ZoneId ?
- Java 8 – How to form ZonedDateTime passing Instant and ZoneId ?
- Java 8 – How to parse ZonedDateTime in String form ?
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- Java 8 – How to convert ZonedDateTime to String ?
- Java 8 – How to convert ZonedDateTime in different formats ?
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- Java 8 – How to convert ZonedDateTime to an OffsetDateTime ?
- Java 8 – How to convert ZonedDateTime to an Instant ?
- Java 8 – How to extract LocalDate and LocalTime and LocalDateTime from ZonedDateTime ?
- Java 8 – How to convert ZonedDateTime to java.util.Date and vice-versa ?
- Java 8 – How to convert ZonedDateTime to java.sql.Timestamp and vice-versa ?
- Java 8 – How to convert ZonedDateTime to Calendar and vice-versa ?
- Java 8 – How to convert ZonedDateTime to GregorianCalendar and vice-versa ?
- Java 8 – How to convert ZonedDateTime to XMLGregorianCalendar and vice-versa ?
- Java 8 – How to convert java.util.Date to ZonedDateTime in different ways ?
- Java 8 – How to add Date and Time fields to ZonedDateTime ?
- Java 8 – How to subtract Date and Time fields from ZonedDateTime ?
- Java 8 – How to alter Date, Time and Zone fields of ZonedDateTime ?
- Java 8 – How to check whether a ZonedDateTime is Before another ZonedDateTime ?
- Java 8 – How to check whether a ZonedDateTime is After another ZonedDateTime ?
- Java 8 – How to compare two ZonedDateTime instances ?
- Java 8 – How to find difference between two ZonedDateTime using Period & Duration ?
- More Java 8 Date/Time API examples
References:
- https://docs.oracle.com/javase/8/docs/api/java/time/ZonedDateTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/ZoneId.html
- https://docs.oracle.com/javase/8/docs/api/java/time/chrono/ChronoZonedDateTime.html
Happy Coding !!
Happy Learning !!
