fun4j brings functional programming to the JVM. It's a framework that integrates major concepts from functional programming into the Java Platform. It also provides seamless integration of Java with Lisp coding, by using a lisp-to-bytecode compiler.
kin is a set of libraries and tools supporting meta-programming for engineering and technical computing applications. This JVM version of kin has been superseded by the stand-alone version being developed at http://purl.org/net/kin.