Need a good java package recommended for reading webbrowsers info.

Hai!
I hate that mozzilla sometimes deletes my passwords and stuff..
So I would like to make a function that reads the info on the wébbpage
and incase it finds a text input thing named "Name" then it will fill that in with my name/accName for specific webbsite..

So can anyone recommend a good package to work with?

Thanks for reading :D

Instead of writting a new one, Ill bump this one..
Incase I get no answer Ill let it die for good, but I tought this deserved a second chanse :p

no idea, don't use java but inform yourself about firefox plugins