Pick a font that has Cyrillic glyphs. One easy way to find one is to bring up MS-Word (or Open/LibreOffice Writer or whatever) and use the "Insert Character" menu to bring up the extended characters dialog. The cyrillic characters follow the extended Latin characters when they are supported, so just keep picking fonts until you see the characters and you like the looks of that particular font. Then make that your working font for Eclipse. Don't forget to pay attention to the proportional-versus-fixed font requirements. Using a proportional font where you need a fixed one can make the display really hard to read.
Note that coding any extended character into a
string literal isn't a good idea. It's better if you use the Unicode escapes if you can:
Better yet, code them in resources, where they can better support I18N and avoid untidy code listings:
That way all the problematic stuff is localized to one/small set of file(s).
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.