Hi, This is the patch for SplittableRandom: http://cr.openjdk.java.net/~psandoz/tl/JDK-8020292-SplittableRandom/webrev/ The algorithm remains the same as reported by Doug on the 9th August: http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-August/019768.html Paul.