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From "Christopher James Blythe (JIRA)" <>
Subject [jira] Created: (GERONIMO-3436) DayTrader streamer and web services (Swing) clients terminate unexpectedly
Date Wed, 22 Aug 2007 17:10:32 GMT
DayTrader streamer and web services (Swing) clients terminate unexpectedly

                 Key: GERONIMO-3436
             Project: Geronimo
          Issue Type: Bug
      Security Level: public (Regular issues)
          Components: application client
    Affects Versions: 2.0.x
            Reporter: Christopher James Blythe

Description from devlist...


I'm still working with the DayTrader streamer client and have run into another issue I cannot
explain. Both the streamer and ws app client create Swing-based GUIs. I am in no way a Swing
expert; however, all of the docs that I have read indicate that the GUI thread should remain
up and running (along with the JVM) after main completes. Here is an example...

public class JFrameExample {
    public static void main(String[] args) {
        JFrame f = new JFrame("This is a test");
        f.addWindowListener(new ExitListener());

>From what I have seen all Swing apps use some variation of this, as do the DayTrader streamer
and ws app clients.

Unfortunately, when I try to run these clients in under Geronimo 2.0.1, the apps terminate
when the main thread completes. I have added a Thread.sleep() to the main just to verify that
the GUI remains up while the main thread is still active.

Does anyone have any thoughts as to why the JVM is terminating with main while the GUI threads
are still active and have not been closed? I've tried a SUN and IBM JVM and both result in
early termination. The only thing I can think of is that something in the Geronimo client
or the manner in which Geronimo packages the client that is changing the behavior. 

Response from David Jencks...

I remember fixing this once....

My guess is that it got broken again when gianny added the bootstrap
repository.  A JIRA would be good I think.   I suspect if you look
around at the various command line classes you can see the code that
shuts down the client from a shutdown hook and see why it isn't
getting used.

I'll try to find some time to take a look at this if you don't beat
me to it.

david jencks

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