I was working on my project in Windows using Eclipse (and I didn't check that my encoding was CP-1251). Now am going to work with my project in Linux with Eclipse too, but with UTF8 encoding, so all my comments are now non readable.
Can I just reconvert them into UTF using Eclipse?
There is a plugin for Eclipse "Autodetect Encoding" - you can detect/convert the encoding in files. It can be found in the Help->Marketplace...
I just started testing, but it works so far.
Hint: sometimes you need to change the detector to ICU4j
And even if the convert does not work in a current document (because of detection) you can do this: CTRL+C on one enconding switch to another and CTRL+V it will paste correct then save.
You can set up the encoding used by eclipse in the Preferences section
Window -> Preferences -> General -> Workspace -> Text file encoding
You can also override it for a single project only if that is the only project you are having trouble with.