ChronoLocalDateTime format() method in Java with Examples Last Updated : 29 May, 2019 Comments Improve Suggest changes Like Article Like Report The format() method of ChronoLocalDateTime interface in Java formats this date-time using the specified formatter. Syntax: default String format(DateTimeFormatter formatter) Parameter: This method accepts a parameter formatter which specifies the DateTimeFormatter to use, not null. Returns: The function returns the formatted date string and not null. Below programs illustrate the ChronoLocalDateTime.format() method: Program 1: Java // Java program to illustrate the format() method import java.util.*; import java.time.*; import java.time.chrono.*; import java.time.format.DateTimeFormatter; public class GfG { public static void main(String[] args) { // Parses the date ChronoLocalDateTime dt1 = LocalDateTime .parse("2018-11-03T12:45:30"); // Prints the date System.out.println("Original ChronoLocalDateTime: " + dt1); // Display d1 in different formats // using format() method System.out.println("BASIC_ISO_DATE format: " + (DateTimeFormatter.BASIC_ISO_DATE) .format(dt1)); System.out.println("ISO_LOCAL_DATE format: " + (DateTimeFormatter.ISO_LOCAL_DATE) .format(dt1)); System.out.println("ISO_DATE format: " + (DateTimeFormatter.ISO_DATE) .format(dt1)); System.out.println("ISO_LOCAL_TIME format: " + (DateTimeFormatter.ISO_LOCAL_TIME) .format(dt1)); } } Output: Original ChronoLocalDateTime: 2018-11-03T12:45:30 BASIC_ISO_DATE format: 20181103 ISO_LOCAL_DATE format: 2018-11-03 ISO_DATE format: 2018-11-03 ISO_LOCAL_TIME format: 12:45:30 Program 2: Java // Program to illustrate the format() method import java.util.*; import java.time.*; import java.time.chrono.*; import java.time.format.DateTimeFormatter; public class GfG { public static void main(String[] args) { // Parses the date ChronoLocalDateTime dt1 = LocalDateTime .parse("2016-09-06T12:45:30"); // Prints the date System.out.println(dt1); // Display d1 in different formats // using format() method System.out.println("ISO_TIME format: " + (DateTimeFormatter.ISO_TIME) .format(dt1)); System.out.println("ISO_LOCAL_DATE_TIME format: " + (DateTimeFormatter.ISO_LOCAL_DATE_TIME) .format(dt1)); System.out.println("ISO_DATE_TIME format: " + (DateTimeFormatter.ISO_DATE_TIME) .format(dt1)); System.out.println("ISO_ORDINAL_DATE format: " + (DateTimeFormatter.ISO_ORDINAL_DATE) .format(dt1)); System.out.println("ISO_WEEK_DATE format: " + (DateTimeFormatter.ISO_WEEK_DATE) .format(dt1)); } } Output: 2016-09-06T12:45:30 ISO_TIME format: 12:45:30 ISO_LOCAL_DATE_TIME format: 2016-09-06T12:45:30 ISO_DATE_TIME format: 2016-09-06T12:45:30 ISO_ORDINAL_DATE format: 2016-250 ISO_WEEK_DATE format: 2016-W36-2 Reference: https://docs.oracle.com/javase/9/docs/api/java/time/chrono/ChronoLocalDateTime.html#format-java.time.format.DateTimeFormatter- Comment More infoAdvertise with us Next Article Introduction to Java S srinam Follow Improve Article Tags : Misc Java Java-Functions Java-ChronoLocalDateTime Java-Time-Chrono package +1 More Practice Tags : JavaMisc Similar Reads Java Tutorial Java is a high-level, object-oriented programming language used to build web apps, mobile applications, and enterprise software systems. 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