How to print current date and time in Java?

Problem Description :

Write a program in Java that prints current date and time.

Java program that prints current date and time.

Print current date and time

Concept :

There are 5 ways to print current date and time using following classes in java.

Date - This class instance provides current date and time.
Calendar - getTime() method of this class provides current date and time.
LocalDate - This class instance provides current date.
LocalDateTime - This class instance provides current date and time.
ZonedDateTime - This class instance provides current date, time and timezone.

Note : Java 8 is required to run below code because LocalDate, LocalDateTime and ZonedDateTime classes are part of Java 8 API.

Java Program :

package com.javamultiplex.datetime; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.ZonedDateTime; import java.util.Calendar; import java.util.Date; /** * * @author Rohit Agarwal * @category Date and Time * @problem How to print current date and time? * */ public class CurrentDateAndTime { public static void main(String[] args) { // Creating Date class instance Date date = new Date(); System.out.println("Current Date and Time by Date class : " + date); // Creating Calendar class instance Calendar calendar = Calendar.getInstance(); System.out.println("Current Date and Time by Calendar class : " + calendar.getTime()); /* * Using Java 8 API classes. * 1) LocalDate -> Print date * 2) LocalDateTime -> Print date and Time * 3) ZonedDateTime -> Print date, time and timezone */ LocalDate localDate = LocalDate.now(); System.out.println("Current Date by LocalDate class : " + localDate); LocalDateTime localDateTime = LocalDateTime.now(); System.out.println("Current Date and Time by LocalDateTime class : " + localDateTime); ZonedDateTime zonedDateTime = ZonedDateTime.now(); System.out.println("Current Date, Time and Timezone by ZonedDateTime class : " + zonedDateTime); } }

Output :

Output - How to print current date and time in Java?

References :

https://docs.oracle.com/javase/7/docs/api/java/util/Date.html

https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#getTime()

https://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html#now--

https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#now--

https://docs.oracle.com/javase/8/docs/api/java/time/ZonedDateTime.html#now--

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Tags : Date and Time Problems, Current Date, LocalDate, LocalDateTime, ZonedDateTime, Calendar.

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