Get value from Date picker

Question

I want to get the value from JavaFX datepicker and store the value as Date Object:

final DatePicker datePicker = new DatePicker(LocalDate.now());
Date date = datePicker.getValue();
grid.add(datePicker, 1, 9);

Can you tell me how I can convert LocalDate to Date?

Take a look at [this example](http://stackoverflow.com/questions/5597671/how-to-convert-joda-localdate-to-java-util-date) — MadProgrammer, Dec 07 '13 at 20:28

score 20 · Accepted Answer · answered Feb 25 '14 at 14:49

As the name implies, LocalDate does not store a timezone nor the time of day. Therefore to convert to an absolute time you must specify the timezone and time of day. There is a simple method to do both, atStartOfDay(ZoneId). Here I use the default time zone which is the local timezone of the computer. This gives you an Instant object which represents and instant in time. Finally, Java 8 added a factory method to Date to construct from an Instant.

LocalDate localDate = datePicker.getValue();
Instant instant = Instant.from(localDate.atStartOfDay(ZoneId.systemDefault()));
Date date = Date.from(instant);
System.out.println(localDate + "\n" + instant + "\n" + date);

This will give you an output like below. Note that the Instant by default prints in UTC.

2014-02-25
2014-02-25T06:00:00Z
Tue Feb 25 00:00:00 CST 2014

Of course, you will need to convert your java.util.Date into a java.time.LocalDate to set the value on the DatePicker. For that you will need something like this:

Date date = new Date();
Instant instant = date.toInstant();
LocalDate localDate = instant.atZone(ZoneId.systemDefault()).toLocalDate();
System.out.println(date + "\n" + instant + "\n" + localDate);

Which will give you output like:

Tue Feb 25 08:47:04 CST 2014
2014-02-25T14:47:04.395Z
2014-02-25

score 6 · Answer 2 · edited Feb 13 '18 at 11:42

6

Or you can use more simplest way

java.sql.Date gettedDatePickerDate = java.sql.Date.valueOf(myDatePicker.getValue());

And then you can perform operation within this date object.

Convert to java.util.Date

Converting java.sql.Date to java.util.Date

edited Feb 13 '18 at 11:42

Mirwise Khan

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answered May 28 '14 at 18:00

Dmitry Nelepov

7,246
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It is not a perfect answer,because in case of the value is `null` ,it invokes an `NullPointerException`. – Menai Ala Eddine - Aladdin Mar 28 '18 at 00:21

score 4 · Answer 3 · answered Dec 07 '13 at 20:26

4

I don't have IDE at hand but this should do the trick.

Date date = new Date(datePicker.getvalue().toEpochDay());

Or alternatively.

LocalDate ld = datePicker.getValue();
Calendar c =  Calendar.getInstance();
c.set(ld.getYear(), ld.getMonthValue(), ld.getDayOfMonth());
Date date = c.getTime();

answered Dec 07 '13 at 20:26

LeonidasCZ

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For reference, toEpochDay() seems to cause the date to be set to 01/01/1970, regardless of the value set in the datepicker – Paul Eden Apr 07 '14 at 12:40
Thank you. That worked perfectly and just what I needed. – ByWaleed Mar 04 '19 at 16:54

score 0 · Answer 4 · answered Nov 16 '17 at 10:09

LeonidasCZ answer is not 100% correct: java.util.Date months range is from 0 to 11, but Calendar.getInstance() is from 1 to 12, so you can do this:

LocalDate ld = datePicker.getValue();
Calendar c =  Calendar.getInstance();
c.set(ld.getYear(), ld.getMonthValue() - 1, ld.getDayOfMonth());
Date date = c.getTime();

If you want to add hours, mins, seconds too:

LocalDate ld = datePicker.getValue();
Calendar c =  Calendar.getInstance();
c.set(ld.getYear(), ld.getMonthValue() - 1, ld.getDayOfMonth(), hours, minutes, seconds);
Date date = c.getTime();

Get value from Date picker

4 Answers4

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