The Java APIs do not have an easy
to use password dialog box. This one is written for swing,
it extends JDialog. The language displayed is chosen automatically from the system default.
OstermillerUtil Java Utilities Copyright (c) 2001-2020 by Stephen Ostermiller and other contributors
The OstermillerUtils library is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
License FAQs - Why GPL? How about the LGPL or something else?