Java Date Formatter

Question

I am getting date format as "YYYY-mm-dd hh:mm" as formatter object.

How can I format the input formatter object to get only "YYYY-mm-dd";?

Smock

You should accept one of the answers below as the solution of your problem, or update your question if you still have no answer. – Perceptual

For new readers to the question I recommend you don’t use SimpleDateFormat and also not Date. Those classes are poorly designed and long outdated, the former in particular notoriously troublesome. Instead use LocalDateTime and DateTimeFormatter, both from java.time, the modern Java date and time API. – Touchhole

See the much newer Answer that provides a modern solution using java.time classes in Java 8+. – Ambrogio

Answer 1

I am getting date format as "YYYY-mm-dd hh:mm" as formatter object. How can i format the input formatter object to get only "YYYY-mm-dd";

You can not have date as YYYY-mm-dd it should be yyyy-MM-dd. To get date in yyyy-MM-dd following is the code:

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
String formattedDate = formatter.format(todaysDate);

Nunn

Take care that the SimpleDateFormat is not thread safe and is a common source of errors. Use the DateTimeFormatter instead – Treed

Answer 2

Format formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm");
        Date date;
        try {
            date = (Date)((DateFormat) formatter).parse("2011-04-13 05:00");
            formatter = new SimpleDateFormat("yyyy-MM-dd");
            String s = formatter.format(date);
            System.out.println(s);
        } catch (ParseException e) {
            e.printStackTrace();
        }

Dissonancy

Answer 3

Use SimpleDateFormat

String myDateString = "2009-04-22 15:51";

SimpleDateFormat inFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
SimpleDateFormat outFormat = new SimpleDateFormat("yyyy-MM-dd");

System.out.println(outFormat.format(inFormat.parse(myDateString)));

Perceptual

Answer 4

If you're getting a date in the format "YYYY-mm-dd hh:mm" and you want it as "YYYY-mm-dd" I suggest you just use inputDate.substring(0, 10).

In either way, beware of potential Y10k bugs :)

Trapezoid

Answer 5

Following sample formate date as yyyy-MM-dd in Java

Format formatter = new SimpleDateFormat("yyyy-MM-dd");
Calendar now = Calendar.getInstance();
System.out.println("Now: "+formatter.format(now.getTime()) );

Ferrand

Answer 6

Yes, SimpleDateFormat is what you are looking for http://dlc.sun.com.edgesuite.net/jdk/jdk-api-localizations/jdk-api-zh-cn/builds/latest/html/en/api/java/text/SimpleDateFormat.html

Dropforge

Answer 7

java.time

I recommend that you use java.time, the modern Java date and time API, for your date and time work.

For parsing input define a formatter:

private static final DateTimeFormatter FORMATTER
        = DateTimeFormatter.ofPattern("uuuu-MM-dd HH:mm", Locale.ROOT);

Parse:

    String input = "2019-01-21 23:45";
    LocalDateTime dateTime = LocalDateTime.parse(input, FORMATTER);
    System.out.println(dateTime);

Output so far:

2019-01-21T23:45

Format output:

    String output = dateTime.format(DateTimeFormatter.ISO_LOCAL_DATE);
    System.out.println(output);

2019-01-21

Tutorial link

Trail: Date Time (The Java™ Tutorials) explaining how to use java.time.

Touchhole

Answer 8

SimpleDateFormat is what you're looking for.

Highkey

Answer 9

Try this:

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
String formattedDate = formatter.format(todaysDate);

Seeley

Answer 10

Use this code:

Date date=new Date();

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

String formattedDate = formatter.format(date);

System.out.println("formatted time==>" + formattedDate);

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

Shiloh

Answer 11

Other answers such as the one by user2663609 are correct.

As an alternative, the third-part open-source replacement for the java.util.Date/Calendar classes, Joda-Time, includes a built-in format for your needs.

// © 2013 Basil Bourque. This source code may be used freely forever by anyone taking full responsibility for doing so.
// import org.joda.time.*;
// import org.joda.time.format.*;

String stringIn = "2011-04-07";

// Returns a formatter for a full date as four digit year, two digit month of year, and two digit day of month (yyyy-MM-dd).
DateTimeFormatter formatter = ISODateTimeFormat.date().withZone( DateTimeZone.forID( "Europe/London" ) ).withLocale( Locale.UK );
DateTime dateTime = formatter.parseDateTime( stringIn ).withTimeAtStartOfDay();
String stringOut = formatter.print( dateTime );

Dump to console…

System.out.println( "dateTime: " + dateTime.toString() );
System.out.println( "stringOut: " + stringOut );

When run…

dateTime: 2011-04-07T00:00:00.000+01:00
stringOut: 2011-04-07

Ambrogio

Answer 12

This question has so many good answers !! , here comes another one more generic solution

public static String getDateInFormate(String oldFormate , String newFormate , String dateToParse){
    //old "yyyy-MM-dd hh:mm"
    //new yyyy-MM-dd
    //dateTopars 2011-04-13 05:00  
    String formatedDate="";
    Format formatter = new SimpleDateFormat();
    Date date;
    try {
        date = (Date)((DateFormat) formatter).parse(dateToParse);
        formatter = new SimpleDateFormat(newFormate);
        formatedDate = formatter.format(date);
    } catch (ParseException e) {
        e.printStackTrace();
    }
    return formatedDate;    
} 

Selena

This question has so many bad answers. About all of them endorsing SimpleDateFormat, a notorious troublemaker of a class that we sort of had to use when the question was asked in 2011 but that no one should be using anymore. – Touchhole

Answer 13

 SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
                String strDate = entry_date;
                System.out.println("strDate*************"+strDate);
                Date date = null;
                try {
                    date = sdf.parse(strDate);

                } catch (ParseException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

                DateFormat df = new SimpleDateFormat("dd/MM/yyyy");

                Date yesterday =subtractDay( date);
                String requiredDate = df.format(yesterday);
                System.out.println("110 days before*******************"+requiredDate);

public static Date subtractDay(Date date) {

        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.add(Calendar.DATE, -110);`enter code here`
        return cal.getTime();
    }

Livelong