How to parse ".dat" file using java?

Hi experts/friends,
I need to parse the ".dat" files such as "history.dat" of Firefox history and "index.dat" of IE history...
I cannot able to parse those files.
Can anyone suggest me or help me....

Google ( [url http://www.google.com/search?q=firefox+history+file+format]firefox history file format )
Google ( [url http://www.google.com/search?q=internet+explorer+history+file+format]internet explorer history file format )

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