import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.time.Instant;

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.LocalTime;

import java.time.ZoneId;

import java.time.ZonedDateTime;

import java.time.format.DateTimeFormatter;

import java.time.temporal.ChronoField;

import java.time.temporal.ChronoUnit;

import java.util.Date;

public class Pruebas {

public static SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");

public static void main(String[] args) throws InterruptedException {

//Cuidado que SimpleDateFormat no es Thread Safe

String fechaStr = "15/11/2017";

SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");

Date f1 = null;

try {

f1 = sdf.parse(fechaStr);

} catch (ParseException e) {

e.printStackTrace();

}

//

//Instant

//

//Los constructores de instant (y del resto de clases de java time)

//son privados

//Instant i = new Instant();

System.out.println("==============================================");

Instant i1 = Instant.now();

Thread.sleep(1);

Instant i2 = Instant.now();

System.out.println(i1);

System.out.println(i2);

System.out.println(i1.toEpochMilli()); //Milisegundos desde el 1/1/1970

System.out.println(i2.toEpochMilli());

//Los objetos de java.time son inmutables

System.out.println(i2.isAfter(i1));

//plus para añadir, minus para restar

i1.plus(1, ChronoUnit.HOURS);

System.out.println(i2.isAfter(i1));

i1 = i1.plus(1, ChronoUnit.HOURS);

System.out.println(i2.isAfter(i1));

//

//LocalDate

//

System.out.println("===========================================");

LocalDate ld = LocalDate.now();

System.out.println("LocalDate:"+ld);

System.out.println("Día del mes:"+ld.getDayOfMonth());

System.out.println("Día de la semana:"+ld.getDayOfWeek());

System.out.println("Día del año:"+ld.getDayOfYear());

System.out.println("Mes:"+ld.getMonthValue());

System.out.println("Mes:"+ld.getMonth());

System.out.println("Año:"+ld.getYear());

System.out.println("Días desde el 1/1/1970:"+ld.getLong(ChronoField.EPOCH_DAY));

//System.out.println("ZAS:"+ld.getLong(ChronoField.SECOND_OF_DAY));

LocalDate ld2 = LocalDate.of(2030, 1, 1);

System.out.println(ld2);

//ld.plus(amountToAdd);

//ld.minus(amountToSubtract);

//

//LocalTime

//

System.out.println("===========================================");

LocalTime lt = LocalTime.now();

System.out.println("LocalTime:"+lt);

System.out.println("Hora:"+lt.getHour());

System.out.println("Minutos:"+lt.getMinute());

System.out.println("Segundos:"+lt.getSecond());

System.out.println("Nanosegundos:"+lt.getNano()); //La precision depende del hardware

System.out.println("Segundo del día:"+lt.toSecondOfDay());

System.out.println("+ 50 minutos:"+lt.plusMinutes(50));

System.out.println("Inmutable:"+lt);

//System.out.println("ZAS:"+lt.getLong(ChronoField.DAY_OF_MONTH));

//

//LocalDateTime

//

System.out.println("===========================================");

LocalDateTime ldt = LocalDateTime.now();

System.out.println("LocalDateTime:"+ldt);

//

//Formatters: son thread safe!

//

System.out.println("===========================================");

DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd/MM/yyyy");

LocalDate ld3 = LocalDate.parse("10/10/2025", dtf);

System.out.println(ld3);

String fecha = ld3.format(dtf);

System.out.println(fecha);

//

//ZonedDateTime

//

System.out.println("===========================================");

ZonedDateTime zdt = ZonedDateTime.now();

System.out.println(zdt);

ZoneId madrid = ZoneId.of("Europe/Madrid");

ZoneId canarias = ZoneId.of("Atlantic/Canary");

ZonedDateTime zdt2 = ZonedDateTime.of(LocalDateTime.now(), madrid);

ZonedDateTime zdt4 = zdt2.withZoneSameInstant(canarias);

System.out.println("Madrid :"+zdt2.toLocalTime());

System.out.println("Canarias:"+zdt4.toLocalTime());

}

}