JComboBox is rather flaky in some respects! I use it, but only as a last resort - I need something where I can use a descriptive contect made visible with an id which is not visible.
The only similar widget is the Tk:Optionmenu which has other challenges, at least in my application.
Thanks for the comment. At least now I know there are at least two others who have had trouble with it. Tk::OptionMenu doesn't give the option of typing in a value that is not in the list and Tk::BrowseEntry doesn't try to match the list while I'm typing. I suppose I'll just have to try and fix JComboBox. Wish me luck. I'm going to need lots of it.