How is it possible to read/write to the Windows registry using Java?
From a quick google:
Check the WinPack for JNIWrapper. It has full Windows Registry access support including Reading and Writing.
The WinPack Demo has Registry Viewer implemented as an example.
Check at http://www.teamdev.com/jniwrapper/winpack/#registry_access
And...
There is also try JNIRegistry @ http://www.trustice.com/java/jnireg/
There is also the option of invoking an external app, which is responsible for reading / writing the registry.