Wikipedia
CLforJava
CLforJava is an unfinished implementation of Common Lisp in the Java programming language. The College of Charleston is actively developing the project. It can compile Lisp code into Java byte code, and can also use Lisp types and code from within Java programs.
The CLforJava project is a long-term effort by undergraduate and graduate students to create a completely new implementation of the Common Lisp computer language. A key feature differentiating it from other Lisp/Java implementations is its ability to “intertwine” with the Java language. The goal of the project is to build an entirely new compiler written in CLforJava itself.