Apache Isis Ext - FullCalendar (parent)
· A component for Apache Isis' Wicket viewer, displaying collections of objects that have a date on a fullcalendar.io (JavaScript widget).
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window isis-extensions-fullcalendar-2.0.0-M9.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.