<p>Similar to the guava version, there is a BigIntegerMath class <a href="http://arxiv.org/src/0908.3030v2/anc" rel="nofollow">here</a> by Richard J. Mathar refered to as org.nevec.rjm, which is the package of the classes.  </p>

<p>Their implementation provides two signatures for the binomial method: int,int and BigInteger,BigInteger.</p>
Combinatoric 'N choose R' in java math?
<p>Is there a built in method in a java library that can compute 'N choose R' for any N, R?</p>