LocalDate

package com.google.adventure.pojo.year2019.girlProject;

import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoField;
import java.time.temporal.TemporalAdjusters;

public class LocalDateTimeExample {

    public static void localDateExample() {

        final LocalDate localDate1 = LocalDate.now();

        System.out.println(localDate1);

        final LocalDate localDate2 = LocalDate.of(2019, 03, 07);

        System.out.println(localDate2);

        final String date = "2019-01-02";

        final LocalDate localDate3 = LocalDate.parse(date);

        System.out.println(localDate3);

        final DateTimeFormatter formatter1 = DateTimeFormatter.ofPattern("yyyyMMdd");

        final LocalDate localDate4 = LocalDate.parse("20190508", formatter1);

        System.out.println(localDate4);

        final DateTimeFormatter formatter2 = DateTimeFormatter.ofPattern("d-MMM-yyyy");

        System.out.println(localDate4.format(formatter2));

        final LocalDate localDate5 = LocalDate.of(2019, 12, 6);

        System.out.println(localDate5.format(formatter2));

        final LocalDate localDate6 = LocalDate.of(2019, 10, 31);

        final LocalDate localDate7 = localDate6.plusYears(1);

        System.out.println(localDate7);

        final LocalDate localDate8 = localDate6.plusMonths(1);

        System.out.println(localDate8);

        final LocalDate localDate9 = localDate6.minusDays(5);

        System.out.println(localDate9);

        final LocalDate lastDayOfCurrentMonth = localDate1.with(TemporalAdjusters.lastDayOfMonth());

        System.out.println(lastDayOfCurrentMonth);

        final LocalDate lastDay1 = localDate2.with(TemporalAdjusters.lastDayOfMonth());

        System.out.println(lastDay1);

        System.out.println(LocalDate.of(2019, 11, 3).with(TemporalAdjusters.lastDayOfMonth()));

        System.out.println(getLastWorkingDayOfMonth(lastDayOfCurrentMonth));
        System.out.println(getLastWorkingDayOfMonth(lastDay1));

    }

    public static LocalDate getLastWorkingDayOfMonth(LocalDate lastDayOfMonth) {
        LocalDate lastWorkingDayOfMonth;
        switch (DayOfWeek.of(lastDayOfMonth.get(ChronoField.DAY_OF_WEEK))) {
            case SATURDAY:
                lastWorkingDayOfMonth = lastDayOfMonth.minusDays(1);
                break;
            case SUNDAY:
                lastWorkingDayOfMonth = lastDayOfMonth.minusDays(2);
                break;
            default:
                lastWorkingDayOfMonth = lastDayOfMonth;
        }

        return lastWorkingDayOfMonth;
    }

    public static void localDateTimeExample() {

        final LocalDateTime localDateTime = LocalDateTime.now();
        System.out.println(localDateTime);

        final LocalDateTime localDateTimeZone = LocalDateTime.now(ZoneId.of("America/Los_Angeles"));
        System.out.println(localDateTimeZone);

        final LocalDateTime today = LocalDateTime.of(LocalDate.now(), LocalTime.now());
        System.out.println(today);

        final LocalDateTime ofMethod = LocalDateTime.of(2015, 4, 14, 12, 30, 23, 12000);
        System.out.println(ofMethod);

        final LocalDateTime ofMethod1 = LocalDateTime.of(2015, Month.APRIL, 1, 12, 30);
        System.out.println(ofMethod1);
        System.out.println(ofMethod1.getDayOfMonth());
        System.out.println(ofMethod1.getHour());
        System.out.println(ofMethod1.getMonth());
        System.out.println(ofMethod1.plusDays(10));
        System.out.println(ofMethod1.minusDays(12));
        System.out.println(ofMethod1.toLocalDate());
        System.out.println(ofMethod1.toLocalTime());

        final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
        final LocalDateTime localDateTime1 = LocalDateTime.parse("20190708120506", formatter);
        System.out.println(localDateTime1);
        final LocalDateTime localDateTime2 = LocalDateTime.parse("2019-08-06T14:25:07");
        System.out.println(localDateTime2);

    }

    public static void main(String[] args) {

        localDateTimeExample();

    }

}