CODEWITHSUNDEEP
javadatesimpledateformat
pioneerBhawna
pioneerBhawna

Reputation: 588

Convert Data format using SimpleDateFormat

I need to convert date format into NEW_FORMAT date format. I want to show like this June 28,2016 ,but its showing January irrespective of any month number I pass. Please check where I am missing..

public class DateClass {

        public static void main(String[] args)
        {
            final String OLD_FORMAT = "yyyy-mm-dd";
            final String NEW_FORMAT = "MMMM dd,yyyy";

            String oldDateString = "2016-06-28";
            String newDateString;

            SimpleDateFormat sdf = new SimpleDateFormat(OLD_FORMAT);
            Date d;
            try {
                d = sdf.parse(oldDateString);
                sdf.applyPattern(NEW_FORMAT);
                newDateString = sdf.format(d);
                System.out.println(""+newDateString);
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

Upvotes: 1

Views: 134

Answers (5)

Basil Bourque
Basil Bourque

Reputation: 340230

java.time

Use modern java.time classes.

Specify a Locale to determine the human language and cultural norms to be used in localizing the name of the month.

String output = 
    LocalDate
        .parse( "2025-01-23" )  // Standard ISO 8601 format can be directly parsed, no need to specify a formatting pattern.
        .format(
            DateTimeFormatter
                .ofPattern( "MMMM dd, uuuu" )
                .withLocale( Locale.of( "en" , "US" ) )  // English language, United States cultural norms.
        ) ;

Upvotes: 1

Naveen Kumar Alone
Naveen Kumar Alone

Reputation: 7678

In java, mm represents as minuets and MM represents as Month, so you have to change your code as

  final String OLD_FORMAT = "yyyy-MM-dd";
  final String NEW_FORMAT = "MMMM dd,yyyy";

  String oldDateString = "2016-06-28";

Upvotes: 2

Ganesh Rengarajan
Ganesh Rengarajan

Reputation: 2006

change this one 

 final String OLD_FORMAT = "yyyy-mm-dd";

to

 final String OLD_FORMAT = "yyyy-MM-dd";

Upvotes: 2

Uwe Plonus
Uwe Plonus

Reputation: 9974

You're using mm in OLD_FORMAT which stands for minute. You want to have MM which stands for month.

Therefore your OLD_FORMAT should be yyyy-MM-dd.

The minute is set to 0 in your case therefore the month is January.

Upvotes: 2

sanbhat
sanbhat

Reputation: 17622

your OLD_FORMAT is wrong, it should be "yyyy-MM-dd". Here small m should be replaced by capital M, since small m represents minutes and M represents month of year, and while parsing using OLD_FORMAT, date is getting parsed wrongly.

Upvotes: 4

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