I doubt there's too much of a learning curve as the new API is pretty similar to Joda Time: http://blog.joda.org/2009/11/why-jsr-310-isn-joda-time_4941.html htt

I doubt there's too much of a learning curve as the new API is pretty similar to Joda Time: http://blog.joda.org/2009/11/why-jsr-310-isn-joda-time_4941.html http://blog.joda.org/2009/11/why-jsr-310-isn-joda-time_4941....