Install libswtcalendar-java by entering the following commands in the terminal:
sudo apt update sudo apt install libswtcalendar-java
Description:
GUI date picker for Java using SWT
SWTCalendar is a port of Kai Toedter's JCalendar to Eclipse's SWT. It is a GUI date picker for Java using SWT as the GUI toolkit. SWTCalendar was designed to be a flexible component so developer can embed a date picker in their application or create their own standalone date picker dialog.
Homepage: http://swtcalendar.sourceforge.net
Version: 0.5-2
Section: universe/java