Splitting processor performance for multiple processes in Java

I am currently working on creating automatic players for a game, using
Java and alpha beta search. For this, I need to evenly distribute the
processor performance between all automatic players.

I am not really familiar with threads and would like to know if there
is a simple way of managing this. The solution itself shouldn't
require a lot of processor work, as I need everything I can get for
the program itself.

I would be very glad if someone could explain or point out some
methods that would be useful. At the moment, I don't really know where
to look myself.
.