I am having a date/time value in standard ISO 8601 format such as as 2010-07-26T11:37:52Z.
I want date in 26-jul-2010 (dd-mon-yyyy) format. How do I do it?
3 Answers
Construct two SimpleDateFormat objects. The first you parse() the value from into a Date object, the second you use to turn the Date object back into a string, e.g.
try {
DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
DateFormat df2 = new SimpleDateFormat("dd-MMM-yyyy");
return df2.format(df1.parse(input));
}
catch (ParseException e) {
return null;
}
Parsing can throw a ParseException so you would need to catch and handle that.
3 Comments
Paresh Mayani
its working perfectly....eally thankful to you for your quick answer, made my life
Anonymous
it’s really incorrect, though it may give you the result you want.
Z means offset zero, but you parse the date-time into your JVM’s time zone, giving an incorrect time. If you don’t use the time-of-day, you will in many case get the desired output, depending on your exact requirements.
Basil Bourque
As, Ole V.V. commented, this Answer is incorrect. The single-quotes around the
Z means "ignore this text". But that text is valuable information! The Z is pronounced “Zulu” and means an offset-from-UTC of zero hours-minutes-seconds, or UTC itself. So this Answer is throwing away vital information, for no good reason. Furthermore, this Answers fails to address the vital issue of time zone. That moment in UTC might be another date, "tomorrow", if viewed in Tokyo, or "yesterday" if viewed in Montréal. See the correct Answer by Ole V.V.Have you tried using Java's SimpleDateFormat class? It is included with the android SDK: http://developer.android.com/reference/java/text/SimpleDateFormat.html
1 Comment
Basil Bourque
FYI, the troublesome date-time classes such as
java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes. Most of the java.time functionality is back-ported to Java 6 & Java 7 in the ThreeTen-Backport project. Further adapted for earlier Android (<26) in ThreeTenABP. See How to use ThreeTenABP….I am providing the modern answer. No one should use SimpleDateFormat anymore.
java.time
Parsing text.
String dateTimeValue = "2010-07-26T11:37:52Z";
OffsetDateTime dateTime = OffsetDateTime.parse(dateTimeValue);
Generating text.
DateTimeFormatter dateFormatter =
DateTimeFormatter.ofPattern(
"dd-MMM-uuuu",
Locale.forLanguageTag("pt-BR")
);
String wantedFormattedDate = dateTime.format(dateFormatter);
Output:
System.out.println(wantedFormattedDate);
26-jul-2010
The month abbreviation in the output depends on the locale provided (Brazilian Portuguese in my example).
I am exploiting the fact that your date-time is in ISO 8601 format, the format that the classes of java.time parse (and also print) as their default, that is, without any explicit formatter.
Avoid the SimpleDateFormat class used in the other answers. That class is notoriously troublesome and long outdated.
Normally you would not want to convert a date and time from a string in one format to a string in a different format. In your program keep date and time as a date-time object, for example Instant or OffsetDateTime. Only when you need to give out a string, format your date into one.
Links
- Oracle tutorial: Date Time explaining how to use java.time.
- Wikipedia article: ISO 8601
OffsetDateTime.parse("2010-07-26T11:37:52Z").format(DateTimeFormatter.ofPattern("dd-MMM-uuuu")).