Java has no concore.java, can't run local nodes, only Docker #496
Description
concoredocker.java exists but there's no concore.java. Every other language has both, py has concore.py + concoredocker.py, cpp has concore.hpp + concoredocker.hpp. Java just... stops at Docker.
Practical problem: mkconcore.py flat out rejects .java files (langext in ["py","m","sh","cpp","v"], no java). So you can't even set up a local study with a Java node, it errors before doing anything.
README still lists supported languages as "Python, Matlab/Octave, Verilog, and C++".... Java isn't there because it genuinely isn't supported locally.
Also irony is, now concoredocker.java already has everything: literalEval parser, ZMQ transport, read/write/unchanged/initVal/tryParam/defaultMaxTime, shutdown hooks. A local concore.java would be mostly swapping /in => ./in, /out =>./out and adding the Windows PID file write that concore.py does (the taskkill /F /PID thing in concorekill.bat).
What's actually needs,
concore.java with relative paths for local file I/O
PID file write on Windows (same as concore.py)
mkconcore.py updated to recognize .java
The literalEval and ZMQ pieces can be lifted straight from concoredocker.java, no reason to rewrite them.