I am developing a JFrame with a large number of JButtons (grouped on JTabbedPanes, 8 tabs each with 16 buttons).   In
the process of using "Change Variable Name" to set application-relevant names to the JButtons, the CPU of the java.exe
process goes up to 100% (as measured with Windows Task Manager).   For the first few, the CPU does come back down
relatively quickly (10 sec or less), but after 15 or so, the time during which the CPU remains at 100% gets longer and
longer, exceeding 30 sec.

I notice that, once it's reached this state, after I shut down NetBeans, Java.exe remains above 90% (I waited > 60 sec),
until I kill the process with Task Manager.