Introduction Last year I wrote a series of posts (Part 1, Part 2, Part 3) on the use of the new Java fork/join framework for a Monte Carlo simulation. First, an update. Going back through the code I discovered a bug in the way the triangle distribution was implemented. Fortunately this is a toy example, as it made the results inaccurate. My fault for not unit testing. I would still not suggest using this code for anything other than learning about fork/join.