scala “error: io error while decoding” “with utf-8”

Question

this thing keeps coming up I checked that all my source files are utf8 encoded, and Im using \'-encoding UTF8\' flag with both scalac and scala command line tools
any ideas?

Answer 1

Just to document this, the problem is that the program was being run like this:

scala filename.class

Instead, it should be run like this:

scala package.hierarchy.Object

Where Object is the name of an main-containing object that you wish to run.