Tag: localdate

java8 February 13, 2020 by mkyong 0 comments

Java 8 – How to calculate days between two dates?

In Java 8, we can use ChronoUnit.DAYS.between(from, to) to calculate days between two dates. 1. LocalDate JavaBetweenDays1.java package com.mkyong.java8; import java.time.LocalDate; import java.time.temporal.ChronoUnit; public class JavaBetweenDays1 { public static void main(String[] args) { LocalDate from = LocalDate.now(); LocalDate to = from.plusDays(10); long result = ChronoUnit.DAYS.between(from, to); System.out.println(result); // 10 } } Output 10 2. LocalDateTime […]

java8 February 12, 2020 by mkyong 1 comment

Java 8 – Difference between two LocalDate or LocalDateTime

In Java 8, we can use Period, Duration or ChronoUnit to calculate the difference between two LocalDate or LocaldateTime. Period to calculate the difference between two LocalDate. Duration to calculate the difference between two LocalDateTime. ChronoUnit for everything. 1. Period JavaLocalDate.java package com.mkyong.java8; import java.time.LocalDate; import java.time.Period; public class JavaLocalDate { public static void main(String[] […]

java8 February 10, 2020 by mkyong 1 comment

Java 8 – Convert Epoch time milliseconds to LocalDate or LocalDateTime

In Java 8, we can use Instant.ofEpochMilli().atZone() to convert the epoch time in milliseconds back to LocalDate or LocalDateTime Epoch time to LocalDate LocalDate ld = Instant.ofEpochMilli(epoch).atZone(ZoneId.systemDefault()).toLocalDate(); Epoch time to LocalDateTime LocalDateTime ldt = Instant.ofEpochMilli(epoch).atZone(ZoneId.systemDefault()).toLocalDateTime(); P.S Epoch time is the number of seconds that have elapsed since 0:00:00 UTC on 1 January 1970 1. Epoch […]

java8 February 7, 2020 by mkyong 0 comments

Java 8 – Convert LocalDate and LocalDateTime to Date

A Java example to convert Java 8 java.time.LocalDate and java.time.LocalDateTime back to the classic java.uti.Date. JavaDateExample.java package com.mkyong.time; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.ZoneId; import java.time.ZonedDateTime; import java.util.Date; public class JavaDateExample { public static void main(String[] args) { // LocalDate -> Date LocalDate localDate = LocalDate.of(2020, 2, 20); Date date = Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant()); // LocalDateTime -> […]

tutorials November 16, 2016 by mkyong 1 comment

Java Date Time Tutorials

A collection of Java date and time examples. 1. Java Date Time APIs In old days, we use the following classic Date and Calendar APIs to represent and manipulate date. java.util.Date – date and time, print with default time-zone. java.util.Calendar – date and time, more methods to manipulate date. java.text.SimpleDateFormat – formatting (date -> text), […]

java8 August 22, 2016 by mkyong 2 comments

Java 8 – Convert Date to LocalDate and LocalDateTime

Here is the code to convert java.util.Date to java.time.LocalDate. Date date = new Date(); LocalDate localDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate(); // different way of create instant object LocalDate localDate = Instant.ofEpochMilli(date.getTime()).atZone(ZoneId.systemDefault()).toLocalDate(); Convert java.util.Date to java.time.LocalDateTime. Date date = new Date(); LocalDateTime localDateTime = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime(); Convert java.util.Date to java.time.ZonedDateTime. Date date = new Date(); ZonedDateTime zonedDateTime = date.toInstant().atZone(ZoneId.systemDefault()); […]

java8 August 16, 2016 by mkyong 25 comments

Java 8 – How to convert String to LocalDate

Here are a few Java examples of converting a String to the new Java 8 Date API – java.time.LocalDate DateTimeFormatter formatter = DateTimeFormatter.ofPattern("d/MM/yyyy"); String date = "16/08/2016"; //convert String to LocalDate LocalDate localDate = LocalDate.parse(date, formatter); The key is understand the DateTimeFormatter patterns Note You may interest at this classic java.util.Date example – How to […]

java January 18, 2010 by mkyong 17 comments

How to compare dates in Java

This article shows few examples to compare two dates in Java. Updated with Java 8 examples. 1. Compare two date 1.1 Date.compareTo 1.2 Date.before(), Date.after() and Date.equals() 1.3 Check if a date is within a certain range 2. Compare two calendar 3. Compare two date and time (Java 8) 3.1 Compare two LocalDate 3.2 Compare […]

java December 24, 2009 by mkyong 14 comments

Java – How to get current date time

In this tutorial, we will show you how to get the current date time from the new Java 8 java.time.* like Localdate, LocalTime, LocalDateTime, ZonedDateTime, Instant and also the legacy date time APIs like Date and Calendar. Table of contents 1. Get current date time in Java 2. java.time.LocalDate 3. java.time.LocalTime 4. java.time.LocalDateTime 5. java.time.ZonedDateTime […]