Hi Aspose team
Thank you for contacting Aspose support.
I am afraid, the current set of the Aspose.Cells APIs do not provide any means to detect the encoding of a CSV file therefore you have to explicitly specify the encoding at the time of loading the CSV in Aspose.Cells object model.
Is this supported added in the latest version of Aspose cells Java?
Well, I am afraid, it might not be possible to auto detect the encoding type of a text format like CSV therefore you have to explicitly set the encoding using the TxtLoadOptions class.