In past job, I heard people talk about message queues in Java to
communicate with other Java process on same host. I think their talking
about FIFOs in the UNIX world (you know use posix mkfifo() etc). I
searched around, but I see nothing in javadoc or anywhere about message
queues.

Is there such a capability in Java? Please don't write to write C++ .so
and use JNI. May be there is 3rd party that provides this? Maybe those
people were lying :(

Another IPC is also acceptable anything. I already know about RMI.
Anything else? Thanks.