How to calculate days between two dates in Java 8?

In this section, we will show you how to calculate days between two dates in Java.

1. LocalDate

Main.java

import java.time.LocalDate;
import java.time.temporal.ChronoUnit;

public class Main {

    public static void main(String[] args) {

        LocalDate from = LocalDate.now();
        LocalDate to1 = from.plusDays(10);

        long result1 = ChronoUnit.DAYS.between(from, to1);
        System.out.println(result1);    // 10


        LocalDate to2 = from.minusDays(10);

        long result2 = ChronoUnit.DAYS.between(from, to2);
        System.out.println(result2);    // -10

    }

}

Console Output:

10
-10

2. LocalDateTime

Main.java

import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;

public class Main {

    public static void main(String[] args) {

        LocalDateTime from = LocalDateTime .now();
        LocalDateTime  to1 = from.plusDays(10);

        long result1 = ChronoUnit.DAYS.between(from, to1);
        System.out.println(result1);    // 10


        LocalDateTime  to2 = from.minusDays(10);

        long result2 = ChronoUnit.DAYS.between(from, to2);
        System.out.println(result2);    // -10

    }

}

Console Output:

10
-10