The core of ORST is the package "rank". It can be used to rank or sift out the best combinations in Tipping-like betting games. The package is best described by it's javadoc generated API. Be sure to read the package description.
The jar-file containing the rank-classes, ready to be imported into java source.
The java source in an tar.gz archive. It is published under GPL with the intention that it may only be included in free, open source, non-commercial programs.