How to Use TemporalAdjusters in Java

Tags: TemporalAdjusters TemporalAdjuster

In this Java core tutorial, we learn how to use the java.time.temporal.TemporalAdjusters class which provides different java.time.temporal.TemporalAdjuster values to adjust date in Java programming language.

How to get first day of month

In the following Java program, we learn how to use the TemporalAdjusters.firstDayOfMonth() adjuster to get the first day of month from a given LocalDate object.

TemporalAdjustersExample1.java 

import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample1 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 2, 3);

        // get first day of month
        LocalDate firstDayOfMonth = localDate.with(TemporalAdjusters.firstDayOfMonth());

        System.out.println("Date: " + localDate);
        System.out.println("First date of month: " + firstDayOfMonth);
    }
}
The output as below. 
Date: 2022-02-03
First date of month: 2022-02-01

How to get last day of month

With the TemporalAdjusters.lastDayOfMonth() adjuster we can get the last day of month from a given LocalDate object as the following example Java code.

TemporalAdjustersExample2.java 

import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample2 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 2, 3);

        // get last day of month
        LocalDate lastDayOfMonth = localDate.with(TemporalAdjusters.lastDayOfMonth());

        System.out.println("Date: " + localDate);
        System.out.println("Last date of month: " + lastDayOfMonth);
    }
}
The output as below. 
Date: 2022-02-03
Last date of month: 2022-02-28

How to get first day of next month

With a given LocalDate object, we can use the TemporalAdjusters.firstDayOfNextMonth() adjuster to get the first day of next month as example Java code below.

TemporalAdjustersExample3.java 

import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample3 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 2, 15);

        // get first day of next month
        LocalDate firstDayOfNextMonth = localDate.with(TemporalAdjusters.firstDayOfNextMonth());

        System.out.println("Date: " + localDate);
        System.out.println("First date of next month: " + firstDayOfNextMonth);
    }
}
The output as below. 
Date: 2022-02-15
First date of next month: 2022-03-01

How to get first day of year

In the following Java program, we use the TemporalAdjusters.firstDayOfYear() adjuster to get the first day of year from a given LocalDate object.

TemporalAdjustersExample4.java 

import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample4 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 7, 11);

        // get first day of year
        LocalDate firstDayOfYear = localDate.with(TemporalAdjusters.firstDayOfYear());

        System.out.println("Date: " + localDate);
        System.out.println("First date of year: " + firstDayOfYear);
    }
}
The output as below. 
Date: 2022-07-11
First date of year: 2022-01-01

How to get last day of year

In the following Java program, we use the TemporalAdjusters.lastDayOfYear() adjuster to get the last day of year from a given LocalDate object.

TemporalAdjustersExample5.java 

import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample5 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 7, 23);

        // get last day of year
        LocalDate lastDayOfYear = localDate.with(TemporalAdjusters.lastDayOfYear());

        System.out.println("Date: " + localDate);
        System.out.println("Last date of year: " + lastDayOfYear);
    }
}
The output as below. 
Date: 2022-07-23
Last date of year: 2022-12-31

How to get first day of next year

In the following Java program, we use the TemporalAdjusters.firstDayOfNextYear() adjuster to get the first day of next year from a given LocalDate object.

TemporalAdjustersExample6.java 

import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample6 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 4, 30);

        // get first day of next year
        LocalDate firstDayOfNextYear = localDate.with(TemporalAdjusters.firstDayOfNextYear());

        System.out.println("Date: " + localDate);
        System.out.println("First date of next year: " + firstDayOfNextYear);
    }
}
The output as below. 
Date: 2022-04-30
First date of next year: 2023-01-01

How to get first specified day of week in month

With the TemporalAdjusters.firstInMonth(DayOfWeek dayOfWeek) adjuster, we can get the first specified day of week in month from a given LocalDate object. For example, in the following Java code we learn how to get the first Monday in month from a given LocalDate object.

TemporalAdjustersExample7.java 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample7 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 4, 30);

        // get first Monday in month
        LocalDate firstMondayInMonth = localDate.with(TemporalAdjusters.firstInMonth(DayOfWeek.MONDAY));

        System.out.println("Date: " + localDate);
        System.out.println("First Monday in month: " + firstMondayInMonth);
    }
}
The output as below. 
Date: 2022-04-30
First Monday in month: 2022-04-04

How to get last specified day of week in month

With the TemporalAdjusters.lastInMonth(DayOfWeek dayOfWeek) adjuster, we can get the last specified day of week in month from a given LocalDate object. For example, in the following Java code we learn how to get the last Friday in month from a given LocalDate object.

TemporalAdjustersExample8.java 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample8 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 4, 30);

        // get last Friday in month
        LocalDate lastFridayInMonth = localDate.with(TemporalAdjusters.lastInMonth(DayOfWeek.FRIDAY));

        System.out.println("Date: " + localDate);
        System.out.println("Last Friday in month: " + lastFridayInMonth);
    }
}
The output as below. 
Date: 2022-04-30
Last Friday in month: 2022-04-29

How to get specified day of week based on ordinal in month

With the TemporalAdjusters.dayOfWeekInMonth(int ordinal, DayOfWeek dayOfWeek) adjuster, we can get the specified day of week with the ordinal in month from a given LocalDate object. For example, we can get the second Tuesday in month as the following Java code.

TemporalAdjustersExample9.java 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample9 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 4, 30);

        // get second Tuesday in month
        LocalDate secondTuesdayInMonth = localDate.with(TemporalAdjusters.dayOfWeekInMonth(2, DayOfWeek.TUESDAY));

        System.out.println("Date: " + localDate);
        System.out.println("Second Tuesday in month: " + secondTuesdayInMonth);
    }
}
The output as below. 
Date: 2022-04-30
Second Tuesday in month: 2022-04-12

How to get next specified day of week

With the TemporalAdjusters.next(DayOfWeek dayOfWeek) adjuster, we can get the next specified day of week from a given LocalDate object. For example, we can get the next Monday as the following example Java code.

TemporalAdjustersExample10.java 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample10 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 9, 6);

        // get next Monday
        LocalDate nextMonday = localDate.with(TemporalAdjusters.next(DayOfWeek.MONDAY));

        System.out.println("Date: " + localDate);
        System.out.println("Next Monday: " + nextMonday);
    }
}
The output as below. 
Date: 2022-09-06
Next Monday: 2022-09-12

How to get next specified day of week or the same

With the TemporalAdjusters.nextOrSame(DayOfWeek dayOfWeek) adjuster, we can get the next specified day of week or return the same date if it is the same day of week as the following example Java code.

TemporalAdjustersExample11.java 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample11 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 9, 6);

        // get next Tuesday or same
        LocalDate nextTuesdayOrSame = localDate.with(TemporalAdjusters.nextOrSame(DayOfWeek.TUESDAY));

        System.out.println("Date: " + localDate);
        System.out.println("Next Tuesday or same: " + nextTuesdayOrSame);
    }
}
The output as below. 
Date: 2022-09-06
Next Tuesday or same: 2022-09-06

How to get previous specified day of week

With the TemporalAdjusters.previous(DayOfWeek dayOfWeek) adjuster, we can get the previous specified day of week from a given LocalDate object. For example, we can get the previous Monday as the following example Java code.

TemporalAdjustersExample12.java 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample12 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 9, 5);

        // get previous Monday
        LocalDate previousMonday = localDate.with(TemporalAdjusters.previous(DayOfWeek.MONDAY));

        System.out.println("Date: " + localDate);
        System.out.println("Previous Monday: " + previousMonday);
    }
}
The output as below. 
Date: 2022-09-05
Previous Monday: 2022-08-29

How to get previuous specified day of week or the same

With the TemporalAdjusters.previousOrSame(DayOfWeek dayOfWeek) adjuster, we can get the previous specified day of week or return the same date if it is the same day of week as the following example Java code.

TemporalAdjustersExample13.java 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample13 {
    public static void main(String... args) {
        LocalDate localDate = LocalDate.of(2022, 9, 5);

        // get previous Monday or same
        LocalDate previousMondayOrSame = localDate.with(TemporalAdjusters.previousOrSame(DayOfWeek.MONDAY));

        System.out.println("Date: " + localDate);
        System.out.println("Previous Monday or same: " + previousMondayOrSame);
    }
}
The output as below. 
Date: 2022-09-05
Previous Monday or same: 2022-09-05

How to create custom TemporalAdjuster

With the TemporalAdjusters.ofDateAdjuster(UnaryOperator dateBasedAdjuster) method, we can create a custom TemporalAdjuster object with our own date adjustment as the following example Java code.

TemporalAdjustersExample14.java 

import java.time.LocalDate;
import java.time.temporal.TemporalAdjuster;
import java.time.temporal.TemporalAdjusters;

public class TemporalAdjustersExample14 {
    public static void main(String... args) {
        final TemporalAdjuster TEN_DAY_LATER = TemporalAdjusters.ofDateAdjuster(localDate -> localDate.plusDays(10));

        LocalDate localDate = LocalDate.of(2022, 9, 5);

        // get ten days later
        LocalDate tenDayLater = localDate.with(TEN_DAY_LATER);

        System.out.println("Date: " + localDate);
        System.out.println("Ten days later: " + tenDayLater);
    }
}
The output as below. 
Date: 2022-09-05
Ten days later: 2022-09-15

Happy Coding 😊

How to Sort a List of Date in Java

Java Add Number of Days to Current Date

Java Add Number of Days to Current LocalDate

Java Add Number of Days to Current LocalDateTime

Java Add Number of Days to Current OffsetDateTime

Java Add Number of Days to Current ZonedDateTime