shutdown after connecting to port

[BerkantCiftci]

After clicking on the connect button, the program crashes. I found this in the error file:

hs_err_pid3676.log

[tomazas]

Same as in #5, the problem is in native RXTX library (at least where it crashes). Sorry, but I don't know any workarounds.

Since RXTX is dead (almost) and not maintained anymore, even if some forks exist like: https://github.com/rxtx/rxtx
should be better to migrate to new alive serial library (e.g. http://fazecast.github.io/jSerialComm/).