This is a longterm issue for the task to improve code quality, by using the SonarQube report, hints in different IDEs, the FindBugs tool and other code quality tools.
This is a follow-up of PDFBOX-2852, which was getting too long.
PDFBOX: Update Bouncy Castle Crypto to version 1.64
Improve code quality (4)
Improve code quality (2)