Few examples to show you how to format java.time.LocalDateTime in Java 8.

1. LocalDateTime + DateTimeFormatter

To format a LocalDateTime object, uses DateTimeFormatter

TestDate1.java

package com.mkyong.time; import java.time.LocalDateTime; import java.time.format.DateTimeFormatter; public class TestDate1 { public static void main(String[] args) { //Get current date time LocalDateTime now = LocalDateTime.now(); System.out.println("Before : " + now); DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); String formatDateTime = now.format(formatter); System.out.println("After : " + formatDateTime); } }

 

Output

Before : 2016-11-09T11:44:44.797After  : 2016-11-09 11:44:44

2. String -> LocalDateTime

Another example to convert a String to LocalDateTime

TestDate2.java

package com.mkyong.time; import java.time.LocalDateTime; import java.time.format.DateTimeFormatter; public class TestDate2 { public static void main(String[] args) { String now = "2016-11-09 10:30"; DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"); LocalDateTime formatDateTime = LocalDateTime.parse(now, formatter); System.out.println("Before : " + now); System.out.println("After : " + formatDateTime); System.out.println("After : " + formatDateTime.format(formatter)); } }

 

Output

Before : 2016-11-09 10:30After : 2016-11-09T10:30After : 2016-11-09 10:30

http://www.mkyong.com/java8/java-8-how-to-format-localdatetime/

http://www.mkyong.com/tutorials/java-date-time-tutorials/