.. In the past 2 weeks, about 3 times now the application has
failed to launch. But he launches the application about 10 times a
day ...
This is a typical symptom for a race condition.
What I believe to be happening is that we have to make some static
calls to methods in com.t4l.io.MiscIO... in order to reach those
methods, we're initializing a static field that contains a
JFileChooser. While constructing that GUI element, a
ClassCastException is coming up... which causes all of MiscIO to
fail to load... which then makes for ClassNotFound problems
whenever we talk to MiscIO.
Yes, this is most likely the cause of the problem.
> java.lang.ClassCastException: javax.swing.KeyStroke
> ...
> at javax.swing.JFileChooser.<init>(JFileChooser.java:273)
> at com.t4l.io.DirectoryChooser.<init>(MiscIO.java:2030)
> at com.t4l.io.MiscIO.<clinit>(MiscIO.java:854)
> ...
> at apple.launcher.JavaApplicationLauncher.launch
(JavaApplicationLauncher.java:52)
According to this stack trace, a static initializer is causing the
creation of a Swing JFileChooser on the Main-Thread.
To fix this, you need to change the static initializer of class
com.t4l.io.MiscIO.
We found from past experience that we need to initialize the
JFileChooser early on. I forget the exact rules (there are so many
subtle tricks on Macs)... but I think if we initialize the
JFileChooser *after* QTJava, it can take over 10-20 seconds to
initialize. (And if we initialize it first, it takes less than
3.) So we'd rather figure out how to make this safe without
constructing the JFileChooser lazily.
Hm. I don't know why this is happening.
But my MultiShow application, initializes QTJava very early during
the application startup phase. I never noticed slow-downs in
JFileChooser because of this.
With best regards,
Werner Randelshofer
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Java-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/java-dev/email@hidden
