Originally posted by "snoofle" ...

I found this deep in the bowels of something written by our offshore counterparts, in it's entirety:

/** * We all know that random number generators aren't truly random. * This class generates random numbers a bit more randomly. */ public final class Randomizer { private static final char [] digits = { '0','1','2','3','4','5','6','7','8','9' }; // Allow this to be instantiated in parallel in multiple threads public Randomizer() { } public final double random() { final StringBuilder sb = new StringBuilder(); sb.append(getRandomDigitString()); sb.append("."); sb.append(getRandomDigitString()); return Double.parseDouble(sb.toString()); } private String getRandomDigitString() { final StringBuilder sb = new StringBuilder(); int n = getRandomNumberOfDigits(); for (int i=0; i<n; i++) { sb.append(getRandomDigit()); } if (n==0) { sb.append("0"); } return sb.toString(); } private char getRandomDigit() { return digits[(int)(Math.random() * 10)]; } private int getRandomNumberOfDigits() { return (int) ((Math.random() * 100) * Math.random()); } }