/**

* Day 34 - Java 8 Features: java.time (Date/Time API)

*/

import java.time.Duration;

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.LocalTime;

import java.time.ZoneId;

import java.time.format.DateTimeFormatter;

public class DateTimeApiExample {

public static void main(String[] args) {

System.out.println("=== java.time (Java 8 Date/Time API) ===\n");

LocalDate today = LocalDate.now();

LocalTime nowTime = LocalTime.now();

LocalDateTime now = LocalDateTime.now();

System.out.println("Today: " + today);

System.out.println("Time: " + nowTime.withNano(0));

System.out.println("Now: " + now.withNano(0));

LocalDate birthday = LocalDate.of(2000, 1, 1);

System.out.println("\nBirthday: " + birthday);

System.out.println("Days since 2000-01-01 (approx): " + Duration.between(birthday.atStartOfDay(), today.atStartOfDay()).toDays());

DateTimeFormatter fmt = DateTimeFormatter.ofPattern("dd-MMM-yyyy HH:mm");

System.out.println("\nFormatted now: " + now.format(fmt));

System.out.println("System Zone: " + ZoneId.systemDefault());

System.out.println("\nKey Points:");

System.out.println("1. java.time is immutable and thread-safe");

System.out.println("2. Prefer it to java.util.Date/Calendar in modern code");

}

}