On Feb 6, 2006, at 2:49 PM, Michael Makowsky wrote:
> new MersenneTwisterFast(seed)
This will seed the Mersenne Twister with the provided seed. If you
seed with the same number, you will always get the same sequence.
> new MersenneTwisterFast();
This seeds with a seed based on the current time in milliseconds.
Thus each time you do this you are likely to get a different sequence.
> random.setSeed(System.currentTimeMillis() + id);
I'm not positive why you're setting the seed to the current time
(plus a constant) when you just seeded the RNG to the current time,
but at any rate, you'll get different values each time again.
A reminder: if you always seed a random number generator with a given
seed, you will get an identical sequence of numbers each time. If
you seed the random number generator with a different seed (typically
by seeding it with the current time, which is the default constructor
new MersenneTwister() ), you will get a different sequence of numbers
each time except in the exceptionally unusual circumstance where you
had two computers with identical millisecond time.