Using Dec 31, 2021 (31-12-2021) as the date value in the date filter of the Ad Hoc displays a 1 year increment (Dec 31, 2022 / 31-12-2022) in the Ad Hoc data

Problem:
When using Dec 31, 2021 (31-12-2021) as the date value in the date filter of the Ad Hoc, it displays an increment of 1 year (Dec 31, 2022 / 31-12-2022) in the Ad Hoc data.

Cause:
The error comes from the pattern expression we use in the adhoc_masks.properties file (<jasperserver-pro>/WEB-INF/bundles). When we format dates in Java, there is a subtle difference between YYYY (uppercase) and yyyy (lowercase). They both represent a year but yyyy (lowercase) represents the calendar year while YYYY (uppercase) represents the year of the week. That’s a subtle difference that only causes problems around a year change of the last week of the year.

Solution:
To display the date values correctly, follow below steps:

1. Open the adhoc_masks.properties file (<jasperserver-pro>/WEB-INF/bundles) in an editor.

2. Add below date format at the end of ADH_100_MASK_date_x, like:
(Note: You may remove the format with YYYY (uppercase) from here if not required to avoid any future confusions. We can also just keep the first three formats, and it should work fine.)

ADH_100_MASK_date_0 = medium,hide
ADH_100_MASK_date_1 = short,hide
ADH_100_MASK_date_2 = long,hide
ADH_100_MASK_date_3 = dd-MM-yyyy

3. Save the file, and restart the server for the changes to reflect.