GWT Date equivalent to java.util.Calendar

Question

I want to get the date of a particular day of the week e.g Wednessday. i.e If today's date is 27th Friday, Wednessday would infact be the 25th .

I could achieve this by

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);
String thisWed = String.format("%tF%n", calendar)

The challenge here is that java.util.Calendar is not supported in GWT client side, Is there a possible solution without having to move this code to server side ?

Thanks

Duplicates earlier http://stackoverflow.com/questions/7009655/how-to-use-java-util-calendar-in-gwt — cellepo, Oct 23 '14 at 17:33

score 16 · Accepted Answer · edited Nov 11 '15 at 21:22

16

com.google.gwt.user.datepicker.client.CalendarUtil is what you are looking for, I guess;

edited Nov 11 '15 at 21:22

aug

11,138
9
72
93

answered Apr 27 '12 at 14:33

koma

6,486
2
27
53

score 2 · Answer 2 · edited May 23 '17 at 12:06

2

Easiest would probably be to use Joda-time or similar, but all GWT ports of JodaTime have been abandonned: Date time library for gwt

The most performant (no third-party dependency) would be to do the calculation yourself:

Date d = new Date();
int dow = d.getDay();
int wed_delta = 3 - dow;
wed = new Date(d.getTime() + (86400 * wed_delta));

(the last line could be replaced with CalendarUtil.addDaysToDate(d, wed_delta), modifying d in-place)

edited May 23 '17 at 12:06

Community

1
1

answered Apr 27 '12 at 14:40

Thomas Broyer

64,353
7
91
164

Hi thomas, First glance at your logic, It looks OK but when I ran it, I get `Fri Apr 27 18:25:48 CAT 2012` . With my code above, I would get `Last Wednessday: 2012-04-25`. I expect to get the last Wednesday of that week of new Date(). – Babajide Prince Apr 27 '12 at 16:25

score 1 · Answer 3 · answered Apr 27 '12 at 14:11

1

using DateTimeFormat, it allows format a java.util.Date into string or format a string into Date.

Date date = new Date();
DateTimeFormat format = DateTimeFormat.getFormat("EEEE");
String day = format.parse(date);

answered Apr 27 '12 at 14:11

user1335794

1,082
6
12

2

Thanks but doesn't answer my question. – Babajide Prince Apr 27 '12 at 14:22

score 0 · Answer 4 · answered Mar 23 '14 at 13:53

You can use the Calendar emulation and org.jresearch.commons.gwt.shared.tools.Dates utility class from open/gwt project on bitbucket (https://bitbucket.org/JRS/open-gwt)

The emulation and utility class based on ftr-gwt-library project (https://code.google.com/p/ftr-gwt-library/)

GWT Date equivalent to java.util.Calendar

4 Answers4