GroupDocs.Comparison for Java 19.3 rolls out with major bug fixes. When Password protected files were compared, result was null. This might be a showstopper for you but not anymore.
Moving ahead, comparing a PDF with itself was not working, result was null. We fixed this issue.
Most importantly, MultiCompare was also returning null. Code below explains how it works.
You can compare a source file with multiple target files. Sounds appealing, isn’t it?... When password protected files were compared...