This is SJ (or sessionj), a Java 1.2 extension that support distributed programming with session types.

BUILDING

Run
> ant jar
to build the source. You need Apache Ant and a Java 1.6 JDK for that.

COMPILING SJ PROGRAMS AND RUNNING THEM

1. Add the bin/ directory to your path.
2. Write an SJ program, say Foo.sj.
3. Compile it using:
> sessionjc Foo.sj [-cp a classpath if needed] [-d destination for generated .java and .class files]
4. Run with:
> sessionj Foo