I have written on this property framework for the last year.
It will provide of multiple ways to load properties, and have them strongly typed as well. Which also include a way to encrypt/decrypt a password property.
Have a look at http://sourceforge.net/projects/jhpropertiestyp/
JHPropertiesTyped will give the developer strongly typed properties.
Easy to integrate in existing projects.
Handled by a large series for property types.
Gives the ability to one-line initialize properties via property IO implementations.
Gives the developer the ability to create own property types and property io's.
Web demo is also available, screenshots shown above.
Also have a standard implementation for a web front end to manage properties, if you choose to use it.
Complete documentation, tutorial, javadoc, faq etc is a available on the project webpage.