Our cross-platform
application has a Mac specific code section to handle hiding the menu bar and
dock (via NSMenu.setMenuBarVisible()) and hiding the cursor (via
NSCursor.hide()).
Since I didn't
want to have different launchers for our applications that only differed in the
classpath (namely, /System/Library/Java), we choose to create
an URLClassLoader to use (with this classpath) when instantiating the above
classes using Class.forName().
Since we are
creating NSMenu and NSCursor classes in different parts of the code, we had
to store a reference to the classloader, otherwise we ran into some errors
when trying to create the second one. (Sorry, I can't remember the exact
error at this time).
Ok, we have just
added the fast splash screen code the list talked about recently. Of
course, the 800X600 splash image running on the 800X600 monitor resolution is
being cut-off by the dock on the Mac. So, they naturally want to hide the
menu bar and dock. In order to avoid class loading slowdown, I copied the
code from the section that normally did this dock hiding into my splash
code. It all works great...except when the main code goes and tries to
load the NSCursor class.
I get an
"UnsatisfiedLinkError: Native library already loaded in another
classloader". Sure, that makes sense. Probably was the nature of the
error before we stored a reference to the class loader back
then.
Ok, since I want to
keep the splash code separate from our application code, I'm stuck. Here
are the options I thought of:
1.) Just change the
Mac launcher to include /System/Library/Java and don't use a "custom" class
loader.
2.) Is there a way
to unload the native library or class loader?
3.) Is there a way
to ask if a class is loaded, and if so, then create an instance of it, even
though I don't have the class loader?
Suggestions? I
realize #1 is probably easiest, but I found this as an opportunity to find out
something new!
Thanks,
Mark
---
Mark Brown, Senior Software
Engineer Innovative Software Engineering Technology Innovation
Center 100 Oakdale Campus, #101 TIC Iowa City, IA 52242
"The difference between ordinary and
extraordinary is that little extra"
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