My question is related to bitcoinj library but not limited by it. bitcoinj will create new change address after every transaction. It will manage them transparently, but let say I want to use this library for merchant payment service. I don't have privacy issue, opposite to that I want to use the service as transparent as it could be. That would be one address per customer to receive money from them one load address to supply money from exchange and one change address.

Is it in general good idea or could there be a security issue? As I said before, privacy is not issue.

If that would be ok, what is the best way to stop bitcoinj from using change addresses and use just one instead?

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