54

I have the following scenario :

SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
System.out.println(dateFormat.parse("31/05/2011"));

gives an output

Tue May 31 00:00:00 SGT 2011

but I want the output to be

31/05/2011 

I need to use parse here because the dates need to be sorted as Dates and not as String.

Any ideas ??

MByD
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bhavya
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    Can we add Wiki/FAQ entry or article for date parsing/formatting and timezones? Looks like 1 out of 5 Java questions are about this topic... – Tomasz Nurkiewicz Jun 07 '11 at 08:28
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    For latecomers: don’t use `Date` and certainly don’t use `SimpleDateFormat`. Use `LocalDate` and `DateTimeFormatter` from [java.time, the modern Java date and time API](https://docs.oracle.com/javase/tutorial/datetime/). For everyone: You are asking the impossible. A `Date` doesn’t have a format, and you cannot change how its `toString` method works (the same goes for the modern `LocalDate`).. – Ole V.V. Feb 12 '19 at 10:06

11 Answers11

72

How about:

SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
System.out.println(dateFormat.format(dateFormat.parse("31/05/2011")));

> 31/05/2011
Naman
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Luciano Fiandesio
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    I don't know why this answer is aaccepted. but it does not give the formatted date of type java.uti.Date. format () method returns String. – Radhakrishna Sharma Gorenta Jun 30 '16 at 11:08
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    @RadhakrishnaGorenta, I'm not sure what you mean by that. There is no such thing "a formatted date of type java.uti.Date". Dates do not have "formats" until they are output on the screen or otherwise serialized. They are just objects. – DavidS Jul 04 '16 at 17:58
  • How does this solve the question of "converting a `util.Date` to `sql.Date` object? – q.Then Nov 22 '16 at 00:34
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    @Ephemeral which question are you talking about? There is no reference whatsoever to sql.Date... – Luciano Fiandesio Nov 24 '16 at 10:15
54

You need to go through SimpleDateFormat.format in order to format the date as a string.

Here's an example that goes from String -> Date -> String.

SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
Date date = dateFormat.parse("31/05/2011");

System.out.println(dateFormat.format(date));   // prints 31/05/2011
//                            ^^^^^^
Roalt
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aioobe
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17

Use the SimpleDateFormat.format

SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
Date date = new Date();
String sDate= sdf.format(date);
BadSkillz
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6

You can use simple date format in Java using the code below

SimpleDateFormat simpledatafo = new SimpleDateFormat("dd/MM/yyyy");
Date newDate = new Date();
String expectedDate= simpledatafo.format(newDate);
Colin O'Dell
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Shan Abeywicrema
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4

It makes no sense, but:

System.out.println(dateFormat.format(dateFormat.parse("31/05/2011")))

SimpleDateFormat.parse() = // parse Date from String
SimpleDateFormat.format() = // format Date into String
Andrew Thompson
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bugs_
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3

If you want to simply output a date, just use the following:

System.out.printf("Date: %1$te/%1$tm/%1$tY at %1$tH:%1$tM:%1$tS%n", new Date());

As seen here. Or if you want to get the value into a String (for SQL building, for example) you can use:

String formattedDate = String.format("%1$te/%1$tm/%1$tY", new Date());

You can also customize your output by following the Java API on Date/Time conversions.

Thiago
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3

java.time

Here’s the modern answer.

    DateTimeFormatter sourceFormatter = DateTimeFormatter.ofPattern("dd/MM/uuuu");
    DateTimeFormatter displayFormatter = DateTimeFormatter
            .ofLocalizedDate(FormatStyle.SHORT)
            .withLocale(Locale.forLanguageTag("zh-SG"));

    String dateString = "31/05/2011";
    LocalDate date = LocalDate.parse(dateString, sourceFormatter);
    System.out.println(date.format(displayFormatter));

Output from this snippet is:

31/05/11

See if you can live with the 2-digit year. Or use FormatStyle.MEDIUM to obtain 2011年5月31日. I recommend you use Java’s built-in date and time formats when you can. It’s easier and lends itself very well to internationalization.

If you need the exact format you gave, just use the source formatter as display formatter too:

    System.out.println(date.format(sourceFormatter));

31/05/2011

I recommend you don’t use SimpleDateFormat. It’s notoriously troublesome and long outdated. Instead I use java.time, the modern Java date and time API.

To obtain a specific format you need to format the parsed date back into a string. Netiher an old-fashioned Date nor a modern LocalDatecan have a format in it.

Link: Oracle tutorial: Date Time explaining how to use java.time.

Ole V.V.
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1

You already has this (that's what you entered) parse will parse a date into a giving format and print the full date object (toString).

MByD
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0

I had something like this, my suggestion would be to use java for things like this, don't put in boilerplate code

BasicImplementation

somshivam
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0

This will help you. DateFormat df = new SimpleDateFormat("dd/MM/yyyy"); print (df.format(new Date());

Sanjay Jain
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0

This looks more compact. Finishes in a single line.

import org.apache.commons.lang3.time.DateFormatUtils;

System.out.println(DateFormatUtils.format(newDate, "yyyy-MM-dd HH:mm:ss"));
Shiva kumar
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