jobo is a Java API that can process expert system rules, apply GPS Operators, run Breadth First/A*/A+ searches and for other Symbolic Artificial Intelligence Inference. It allows you to specify Tuples, Rules & Operators. It contains a variety of low-level matching & inference mechanisms to handle symbolic representations.
Simon has advised that jobo is dead-ending. If you want JVM symbolics use Clojure. Only use jobo if it must be Java (Android & others). We will correct jobo bugs but don't plan to develop it further.
jobo is a work in progress -- we welcome contributions.