Date api for managing off days in an year?

Question

I want to know the available api\'s for date in java in which the following functionality is implemented.

Calculating date from one date to N day skipping the mentio

Answer 1

Even though I commented otherwise, I actually found a Java API. I failed to notice a download link, but the comments sure say there is one somewhere.

There is also a sourceforge project, called JollyDay regarding this.