http://github.com/Appendium/objectlabkit
A set of modules to handle common financial functions. The first module is Date Calculator which handles holidays and weekends. A set of rules are implemented to deal with days falling on a holiday: Forward, Backward, Modified Forward, Modified Backward
New FX Rate Calculators
Joda-time based utility Java class that allows calculation related to downtimes. You set a list of downtimes (date-time intervals), and the calculator will give you the ending date-time of a duration, and uptime between two points in time, too.