Java Date Time - YearMonth.with() Examples

package com.logicbig.example.yearmonth;

import java.time.YearMonth;
import java.time.temporal.ChronoField;
import java.time.temporal.Temporal;
import java.time.temporal.TemporalAdjuster;

public class WithExample {
    public static void main(String... args) {
        YearMonth y = YearMonth.of(1970, 4);
        System.out.println(y);

        YearMonth y2 = y.with(midYearAdjuster);
        System.out.println(y2);

    }

    private static final TemporalAdjuster midYearAdjuster = new TemporalAdjuster() {
        @Override
        public Temporal adjustInto(Temporal temporal) {
            if (temporal.isSupported(ChronoField.YEAR) &&
                    temporal.isSupported(ChronoField.MONTH_OF_YEAR)) {
                int year = temporal.get(ChronoField.YEAR);
                return YearMonth.of(year, 6);
            }
            return null;
        }
    };
}

package com.logicbig.example.yearmonth;

import java.time.YearMonth;
import java.time.temporal.ChronoField;

public class WithExample2 {

    public static void main(String... args) {
        YearMonth y = YearMonth.of(2025, 5);
        System.out.println(y);

        for (ChronoField chronoField : ChronoField.values()) {
            if (y.isSupported(chronoField)) {
                YearMonth y2 = y.with(chronoField, 1);
                System.out.printf("%15s => %s%n", chronoField.name(), y2);
            }
        }
    }
}