Error deploying java app on heroku

Question

I'm on windows and this is my first java deploy on heroku and I'm quite new to heroku. Following this guide and when I want to visit the app url I get this screen: Here it is my heroku logs:

C:\Users\Luca\workspace\ScacchiCopia>heroku open
Opening gentle-mesa-xxxx... done

C:\Users\Luca\workspace\ScacchiCopia>heroku logs
2015-08-05T14:23:46.657148+00:00 app[web.1]:    at java.awt.Window.<init>(Window
.java:536)
2015-08-05T14:23:46.657236+00:00 app[web.1]:    at java.awt.Frame.<init>(Frame.j
ava:420)
2015-08-05T14:23:46.657323+00:00 app[web.1]:    at java.awt.Frame.<init>(Frame.j
ava:385)
2015-08-05T14:23:46.657416+00:00 app[web.1]:    at javax.swing.JFrame.<init>(JFr
ame.java:189)
2015-08-05T14:23:46.657517+00:00 app[web.1]:    at ChessBoard_SO.<init>(ChessBoa
rd_SO.java:11)
2015-08-05T14:23:46.657610+00:00 app[web.1]:    at ChessBoard_SO.main(ChessBoard
_SO.java:395)
2015-08-05T14:23:47.551943+00:00 heroku[web.1]: State changed from starting to c
rashed
2015-08-05T14:23:47.538227+00:00 heroku[web.1]: Process exited with status 1
2015-08-05T20:05:21.031881+00:00 heroku[web.1]: State changed from crashed to st
arting
2015-08-05T20:05:26.099109+00:00 heroku[web.1]: Starting process with command `j
ava -cp target/classes:target/dependency/* ChessBoard_SO`
2015-08-05T20:05:28.319274+00:00 app[web.1]: Exception in thread "main" java.awt
.HeadlessException:
2015-08-05T20:05:28.319410+00:00 app[web.1]: No X11 DISPLAY variable was set, bu
t this program performed an operation which requires it.

2015-08-06T07:50:21.301050+00:00 heroku[web.1]: Starting process with command `j
ava -cp target/classes:target/dependency/* ChessBoard_SO`
2015-08-07T07:02:28.708591+00:00 heroku[router]: at=error code=H10 desc="App cra
shed" method=GET path="/" host=gentle-mesa-8436.herokuapp.com request_id=9daeabf
a-1dd3-4277-8833-785bdae9af93 fwd="79.41.230.143" dyno= connect= service= status
=503 bytes=
2015-08-07T07:02:29.588019+00:00 heroku[router]: at=error code=H10 desc="App cra
shed" method=GET path="/favicon.ico" host=gentle-mesa-xxxx.herokuapp.com request
_id=97a466fd-b315-42d8-8976-7829e19cc778 fwd="79.41.230.143" dyno= connect= serv
ice= status=503 bytes=

Answer 1

The application you are trying to run is a GUI-based app (Graphical User Interface). This won't work on a remote server (which is "headless").