When a seTConverter method of DatePicker is set, the changes do not take effect and the new converter does not kick in, until a different value is set for DatePicker. I have tried this in different versions of java8 from build 106 to b129 and in all of them I get the same issue.

fromDP.setConverter(myConverter);


My work around has been to change the LocalDate value and then set it back to the correct date to make the runtime apply my converter:


fromDP.setConverter(myConverter);
LocalDate ld = fromDP.getValue();
fromDP.setValue(ld.plusDays(1));
fromDP.setValue(ld);

The reason I noticed this is because I am creating a screen to change the string presentation of the DatePicker based on some radio button selection by the user and I expect the new StringConverter to take effect as soon as it's set.