CODEWITHSUNDEEP
javaswingjrubywarbler
Nicola Mingotti
Nicola Mingotti

Reputation: 1008

Why does JRuby Swing app quits immediately if run as jar

I am trying to build a simple JRuby application with a GUI. I am using the code in this page as a starting point, section marked "Simple Example".

If I take the code snippet and I run it as 

$> jruby test.rb

then it is all fine, I see the window.

If I try to make a "jar" file and run it with:

$> warble jar
$> java -jar test.jar

Then the application immediately exists without leaving an error code.

I tried to run the "jar" file in Windows10 and FreeBSD11.2, same behaviour, the GUI immediately quits.

Do you know how can I work around this ? Sorry for the simple question, these are my first steps with JRuby.

Upvotes: 0

Views: 42

Answers (1)

Nicola Mingotti
Nicola Mingotti

Reputation: 1008

After Elliott suggestion I made the following modification to the last line of the original code and the "jar" works. It is just a hack, but small enough to get a beginner, like me, on track;)

t1 = Thread.new {
   Example.new
}

while true do
  sleep 1
end

Upvotes: 0

Related Questions