exe installers created by jpackage don't propagate a status code of uninstallation command. They return 0 in case of clean uninstall and -1 otherwise. There is no way to figure out the reason for uninstallation failure from the exit code of exe installer.

In case of uninstallation failure, a message box is displayed. This defeats the ability to use jpackage-generated exe installers in batch execution.

The fix must transform the uninstallation status code into exe installer's exit code and exe installer must not have UI when used for uninstallation.