Java 8 – How to check whether a LocalDate is After another LocalDate ?

August 4, 2022 SJ Java 8, Java 8 Date/Time 0

In this article, we will learn how to check whether one LocalDate is After another LocalDate using LocalDate.isAfter() method in Java 1.8 version

Compare 2 LocalDate using isAfter() method :

  • If there are 2 LocalDate and the requirement is to check whether one LocalDate is after another LocalDate, then isAfter() method can be used
    • isAfter(ChronoLocalDate) – checks if the invoking LocalDate is after the specified LocalDate
  • Lets see an example for comparing 2 LocalDate using isAfter() method
  • Note: Self comparing LocalDate using isAfter() method always returns false, as shown in the below illustration

CheckLocalDateIsAfterAnotherLocalDate.java

package in.bench.resources.java8.localdate.examples;

import java.time.LocalDate;
import java.time.Month;

public class CheckLocalDateIsAfterAnotherLocalDate {

	public static void main(String[] args) {

		// 1. get today's LocalDate
		LocalDate todaysLocalDate = LocalDate.of(2022, Month.AUGUST, 3);
		System.out.println("1. Today's LocalDate is = " + todaysLocalDate);


		// 2. form past LocalDate
		LocalDate pastLocalDate = LocalDate.of(2022, Month.AUGUST, 1);
		System.out.println("2. Past LocalDate is = " + pastLocalDate);


		// 3. form future LocalDate
		LocalDate futureLocalDate = LocalDate.of(2022, Month.AUGUST, 29);
		System.out.println("3. Future LocalDate is = " + futureLocalDate);


		// 4. isAfter() - LocalDate comparison
		System.out.println("\n\n4. Comparing 2 LocalDate using isAfter() method :- \n");


		// 4.1 check whether todaysLocalDate isAfter futureLocalDate
		boolean isAfter1 = todaysLocalDate.isAfter(futureLocalDate);
		System.out.println("4.1 Today's LocalDate (" + todaysLocalDate 
				+ ") is After Future LocalDate (" + futureLocalDate + ") ? "
				+ isAfter1);


		// 4.2 check whether todaysLocalDate isAfter pastLocalDate
		boolean isAfter2 = todaysLocalDate.isAfter(pastLocalDate);
		System.out.println("4.2 Today's LocalDate (" + todaysLocalDate 
				+ ") is After Past LocalDate (" + pastLocalDate + ") ? "
				+ isAfter2);


		// 4.3 check whether pastLocalDate isAfter todaysLocalDate 
		boolean isAfter3 = pastLocalDate.isAfter(todaysLocalDate);
		System.out.println("4.3 Past LocalDate (" + pastLocalDate 
				+ ") is After Today's LocalDate (" + todaysLocalDate + ") ? "
				+ isAfter3);


		// 4.4 check whether pastLocalDate isAfter futureLocalDate 
		boolean isAfter4 = pastLocalDate.isAfter(futureLocalDate);
		System.out.println("4.4 Past LocalDate (" + pastLocalDate 
				+ ") is After Future LocalDate (" + futureLocalDate + ") ? "
				+ isAfter4);


		// 4.5 check whether futureLocalDate isAfter todaysLocalDate 
		boolean isAfter5 = futureLocalDate.isAfter(todaysLocalDate);
		System.out.println("4.5 Future LocalDate (" + futureLocalDate 
				+ ") is After Today's LocalDate (" + todaysLocalDate + ") ? "
				+ isAfter5);


		// 4.6 check whether futureLocalDate isAfter pastLocalDate 
		boolean isAfter6 = futureLocalDate.isAfter(todaysLocalDate);
		System.out.println("4.6 Future LocalDate (" + futureLocalDate 
				+ ") is After Past LocalDate (" + pastLocalDate + ") ? "
				+ isAfter6);



		// 5. isAfter() - self LocalDate comparison
		System.out.println("\n\n5. Self comparing LocalDate using isAfter() method :- \n");


		// 5.1 check whether todaysLocalDate isAfter todaysLocalDate
		boolean isAfter7 = todaysLocalDate.isAfter(todaysLocalDate);
		System.out.println("5.1 Today's LocalDate (" + todaysLocalDate 
				+ ") is After Today's LocalDate (" + todaysLocalDate + ") ? "
				+ isAfter7);


		// 5.2 check whether pastLocalDate isAfter pastLocalDate
		boolean isAfter8 = pastLocalDate.isAfter(pastLocalDate);
		System.out.println("5.2 Past LocalDate (" + pastLocalDate 
				+ ") is After Past LocalDate (" + pastLocalDate + ") ? "
				+ isAfter8);


		// 5.3 check whether futureLocalDate isAfter futureLocalDate
		boolean isAfter9 = futureLocalDate.isAfter(futureLocalDate);
		System.out.print("5.3 Future LocalDate (" + futureLocalDate 
				+ ") is After Future LocalDate (" + futureLocalDate + ") ? "
				+ isAfter9);
	}
}

Output:

1. Today's LocalDate is = 2022-08-03
2. Past LocalDate is = 2022-08-01
3. Future LocalDate is = 2022-08-29


4. Comparing 2 LocalDate using isAfter() method :- 

4.1 Today's LocalDate (2022-08-03) is After Future LocalDate (2022-08-29) ? false
4.2 Today's LocalDate (2022-08-03) is After Past LocalDate (2022-08-01) ? true
4.3 Past LocalDate (2022-08-01) is After Today's LocalDate (2022-08-03) ? false
4.4 Past LocalDate (2022-08-01) is After Future LocalDate (2022-08-29) ? false
4.5 Future LocalDate (2022-08-29) is After Today's LocalDate (2022-08-03) ? true
4.6 Future LocalDate (2022-08-29) is After Past LocalDate (2022-08-01) ? true


5. Self comparing LocalDate using isAfter() method :- 

5.1 Today's LocalDate (2022-08-03) is After Today's LocalDate (2022-08-03) ? false
5.2 Past LocalDate (2022-08-01) is After Past LocalDate (2022-08-01) ? false
5.3 Future LocalDate (2022-08-29) is After Future LocalDate (2022-08-29) ? false

Related Articles:

References:

Happy Coding !!
Happy Learning !!

Java 8 – How to compare two LocalDate instances ?
Java 8 – How to check whether a LocalDate is Before another LocalDate ?

Related posts:

  1. Java 8 – How to check whether a LocalDate is Before another LocalDate ?
  2. Java 8 – How to compare two LocalDate instances ?
  3. Java 8 – How to check whether a LocalTime is Before another LocalTime ?
  4. Java 8 – How to compare two LocalTime instances ?