Issues - ousou/Javalabra-2013 GitHub Wiki
Random number generator
The project uses the built-in java.util.Random, which doesn't necessarily create random numbers of the highest quality (see link). This means that the simulated results may not be reliable (though they seem to be sensible). A better RNG needs to be implemented.
Algorithm speed
The algorithm is very slow, though still somewhat usable. A more effective algorithm has to be implemented. One obvious improvement is representing cards by bytes instead of Card-objects.