I have the "bitcoin-wallet-backup-" file but i forgot the password, how can i restore it?
FYI:
Determine wallets based on filenames (note: these are the default filenames, you could have renamed yours)
It’s possible to restore that wallet using a bitcoinj client as far as I can remember, there should be a guide somewhere on the internet (I did it with a hd wallet but yours might not be hd if it’s older than a few years).