com.fasterxml.jackson.databind.util.ISO8601DateFormat is deprecated since 2.9 but I couldn't find any information about how to replace its current usage while upgrading.

So far, I checked the following locations:

• the release notes.
• the related blog entry.
• the related issue.
• StackOverflow

But no luck...

I suspect that I could probably just delete objectMapper.setDateFormat(new ISO8601DateFormat()); and be fine but I wanted to double-check.

So this is a bug report against the documentation, not the code. If it can be safely removed and dates are still serialized as ISO-8601 strings then this should be mentioned somewhere.