There are 4 or 5 demos in the HTM.java-examples repository. You can find them and the instructions for using them at: https://github.com/numenta/htm.java-examples
Also, I would try and get in contact with @rhyolight to ask about running the Docker file for NuPIC and also get your installation going if you are a Python or C++ guy. Otherwise, HTM.java is the same code same everything (except no swarming for now and no OPF framework - there is however a Network API for its use and a wiki on how to use it.)
HTM.java is the equivalent of NuPIC except that its playing “catch up” with NuPIC for certain functionality and is community ported from NuPIC with all the same tests etc. to guarantee its compatibility.