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Summary: Re: How do I debug "old interface" errors?

My thanks to all who replied. I was having a problem with an applet that ran fine in XCode, but failed when using an older browser. There were some swing classes that were supposed to be "hidden", but weren't.

In answer to how many browsers on currently used machines don't have swing, I found that the answer at our hospital was all of them, with java version 1.1.4! I will be writing a more detailed summary of what I found in another email.

Larry Nussbaum outlined the solution that finally worked, which was double indirection, hiding the offending swing classes in classes that only get instantiated if there is swing on the target.

Greg Guerin correctly identified the problem of SpinnerModel being 1.4 or later only, so that OS X browsers that only support 1.3, which is every browser except Safari as far as I can tell, failed even though they have swing.

Gerard Davison and Greg Guerin both mentioned using the -verbose command to force a listing of the classes loaded. This proved to be very helpful, because it allowed me to identify not only when swing classes were being loaded, but where, by which classes were loaded just before and after.

Thanks to all for the help! It works now, at least all of the major functions.

David Linker

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 >How do I debug "old interface" errors? (From: David Linker <email@hidden>)



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