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Hi Brandon, > Math.-random() only gives you one thing, a double value > between zero and one, not including one. The Random class > provides a lot more functionality (such as the ability to seed it for > reproducibility) so I would suggest you simply use it instead. > Norman I completely agree with Norman that the java.util.Random class is the best thing to use. I don't know of any studies that show how good a random number generator java.util.Random is, I would guess that it is good enough for anything we are doing right now. If anyone has the time/interest it might be useful to compare it with the random number generators in the colt package http://www-itg.lbl.gov/~hoschek/colt/api/cern/jet/random/engine/package-summary.html which claim to be very good and fast. Tony