Configuring log4j log for sensitive data

Question

I have a class that contains confidential information (credit card information, phone numbers, etc.).

I want this class to be able to pass in log4j, but it should hide certain information.

If I have a UserInformation class that has getPhoneNumber, getCreditCardNumber methods, how can I configure log4j or this class to hide numbers correctly.

I want the credit card number to be displayed as xxxx-xxxx-xxxx-1234, and the phone number to be displayed as xxxx-xxx-xxx, given that these will be 1234-1234-1234-1234 and 1234-567-890

thank

Answer 1

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Answer 2

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Answer 3

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