TemporalAdjusters lastDayOfYear() method in Java with Examples

The lastDayOfYear() method of a TemporalAdjusters class is used to return the “last day of the year” TemporalAdjuster object, which returns a new Date object set to the last day of the year.

Syntax:

public static TemporalAdjuster lastDayOfYear()

Parameters: This method accepts nothing.

Return value: This method returns the last day of the year adjuster, not null.

Below programs illustrate the TemporalAdjusters.lastDayOfYear() method:
Program 1:

// Java program to demonstrate
// TemporalAdjusters.lastDayOfYear()

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

public class GFG {
    public static void main(String[] args)
    {

        // get TemporalAdjuster with last day
        // of the year adjuster
        TemporalAdjuster temporalAdjuster
            = TemporalAdjusters.lastDayOfYear();

        // using adjuster for local date time
        LocalDate localDate
            = LocalDate.of(2023, 10, 11);
        LocalDate lastDayOfYear
            = localDate.with(temporalAdjuster);

        // print
        System.out.println("last day of the "
                           + "year for localdate "
                           + localDate + ": "
                           + lastDayOfYear);
    }
}

Output:

last day of the year for localdate 2023-10-11: 2023-12-31

Program 2:

// Java program to demonstrate
// TemporalAdjusters.lastDayOfYear() method

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

public class GFG {
    public static void main(String[] args)
    {

        // get TemporalAdjuster with last day
        // of  year adjuster
        TemporalAdjuster temporalAdjuster
            = TemporalAdjusters.lastDayOfYear();

        // using adjuster for local date time
        LocalDate localDate
            = LocalDate.of(2099, 12, 29);
        LocalDate lastDayOfYear
            = localDate.with(temporalAdjuster);

        // print
        System.out.println("last day of  "
                           + "year for localdate "
                           + localDate + ": "
                           + lastDayOfYear);
    }
}

Output:

last day of  year for localdate 2099-12-29: 2099-12-31

References: https://docs.oracle.com/javase/10/docs/api/java/time/format/TemporalAdjusters.html