Format Date to yyyy-MM-dd in java
In this post, we will see how to Format Date to yyyy-MM-dd in java.
There are multiple ways to format Date to yyyy-MM-dd in java. Let’s go through them.
Using DateTimeFormatter with LocalDate (Java 8)
To Format Date to yyyy-MM-dd in java:
- Create a LocalDateTime object.
- Use DateTimeFormatter.ofPattern() to specify the pattern yyyy-MM-dd
- Call format() method on DateTimeFormatter and pass LocalDateTime object
- Get result in String with date format yyyy-mm-dd .
Let’s see with the help of example:
Using SimpleDateFormat
To Format Date to yyyy-MM-dd in java:
- Create Date object
- Create SimpleDateFormat with pattern yyyy-MM-dd
- Call format() method on SimpleDateFormat and pass Date object
- Get result in String with date format yyyy-mm-dd.
Further reading:
How to get day name from date in java
Format LocalDateTime to String in Java
Using Calendar class
To Format Date to yyyy-MM-dd in java:
- Use Calendar’s setTime() method to set current date
- Use calendar class to get day, month and year using Calendar.get() methods.
- Create format yyyy-MM-dd using String concatenation.
This is not a recommended approach as it does not specify format explicitly and is more error prone.
Let’s see with the help of example:
String yyyymmddFormat = ( year ) + «-» + ( ( month < 10 ) ? "0" + month : month ) + "-" + ( ( day < 10 ) ? "0" + day : day ) ;
Note that we have added 1 after getting month using calendar.get(Calendar.MONTH) because it returns month from 0 to 11. 0 denotes January and 11 denotes December.
That’s all about how to Format Date to yyyy-MM-dd in java.
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How do I format a date into dd/MM/yyyy?
Formatting how data should be displayed on the screen is a common requirement when creating a program or application. Displaying information in a good and concise format can be an added values to the users of the application. In the following code snippet we will learn how to format a date into a certain display format.
For these purposes we can utilize the DateFormat and SimpleDateFormat classes from the java.text package. We can easily format a date in our program by creating an instance of SimpleDateFormat class and specify to format pattern. Calling the DateFormat.format(Date date) method will format a date into a date-time string.
You can see the details about date and time patters in the following link: Date and Time Patterns. Now, let’s see an example as shown in the code snippet below.
package org.kodejava.text; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; public class DateFormatExample < public static void main(String[] args) < Date date = Calendar.getInstance().getTime(); // Display a date in day, month, year format DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy"); String today = formatter.format(date); System.out.println("Today : " + today); // Display date with day name in a short format formatter = new SimpleDateFormat("EEE, dd/MM/yyyy"); today = formatter.format(date); System.out.println("Today : " + today); // Display date with a short day and month name formatter = new SimpleDateFormat("EEE, dd MMM yyyy"); today = formatter.format(date); System.out.println("Today : " + today); // Formatting date with full day and month name and show time up to // milliseconds with AM/PM formatter = new SimpleDateFormat("EEEE, dd MMMM yyyy, hh:mm:ss.SSS a"); today = formatter.format(date); System.out.println("Today : " + today); >> Let’s view what we got on the console:
Today : 24/09/2021 Today : Fri, 24/09/2021 Today : Fri, 24 Sep 2021 Today : Friday, 24 September 2021, 09:36:32.724 AM A programmer, recreational runner and diver, live in the island of Bali, Indonesia. Programming in Java, Spring, Hibernate / JPA. You can support me working on this project, buy me a cup of coffee ☕ every little bit helps, thank you 🙏