Java Date Time - ZonedDateTime.with() Examples

package com.logicbig.example.zoneddatetime;

import java.time.ZonedDateTime;
import java.time.temporal.TemporalAdjusters;

public class WithExample {

    public static void main(String... args) {
        ZonedDateTime d = ZonedDateTime.now();
        System.out.println(d);

        ZonedDateTime d2 = d.with(TemporalAdjusters.firstDayOfMonth());
        System.out.println(d2);

        ZonedDateTime d3 = d.with(TemporalAdjusters.firstDayOfNextMonth());
        System.out.println(d3);

        ZonedDateTime d4 = d.with(TemporalAdjusters.lastDayOfYear());
        System.out.println(d4);

        ZonedDateTime d5 = d.with(TemporalAdjusters.firstDayOfNextYear());
        System.out.println(d5);

        ZonedDateTime d6 = d.with(TemporalAdjusters.lastDayOfMonth());
        System.out.println(d6);

        ZonedDateTime d7 = d.with(TemporalAdjusters.firstDayOfYear());
        System.out.println(d7);
    }
}

package com.logicbig.example.zoneddatetime;

import java.time.ZonedDateTime;
import java.time.temporal.ChronoField;

public class WithExample2 {

    public static void main(String... args) {
        ZonedDateTime d = ZonedDateTime.now();
        System.out.println(d);

        for (ChronoField chronoField : ChronoField.values()) {
            with(d, chronoField);
        }
    }

    private static void with(ZonedDateTime d, ChronoField chronoField) {
        ZonedDateTime d2 = d.with(chronoField, 1);
        System.out.printf("%28s => %s%n", chronoField.name(), d2);
    }
}