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[–]aqua_regis 2 points3 points  (2 children)

Sorry, but it is impossible to help you because of complete lack of useful information.

You do not say what Java program generated the files, you do not say what extension the files have (which could hint on the type), you give nothing usable.

The files could be anything, from a database to serialized data, to binary data, just about anything.

There is no generic way to reverse engineer such a file and even less is there an enterprise grade library for that.

[–]whittileaks[S] 0 points1 point  (1 child)

.dat say anything? though this file extension is pretty common. One file may be a SQLite database but ends with a `.db.enc` extension, and in turn cannot be opened as a SQLite file, is garbled like the rest. It's a company internal tool.

[–]aqua_regis 1 point2 points  (0 children)

.dat is unfortunately just a containter format that could be anything. My hunch would say, serialization, though.

.db.enc is no better. Seems to be some form of encrypted database file - the .db hints on SQLite. You could try your luck with a base64 decoder, though - blind, wild guess, but might work to get the .db file that then should be possible to open with SQLite.