How does encoding affect the execution of a file?

Question

Visual Studio Code

Hello. By default, Visual Studio Code saves files in utf - 8 encoding.
If you save html, js, css in UTF - 8 encoding, then there are no problems with Cyrillic, and if you save the compiled java file in this encoding, then Cyrillic turns into incomprehensible hieroglyphs.
And what to do in this case? Is it necessary to save compiled files in windows 1251 encoding and does this affect the operation of the files themselves? Thank you!

Answer 1

You may be trying to open a file with the wrong encoding. In the lower right corner of the editor there is a button indicating the encoding, with which you can open the file again in the desired encoding (Reopen with Encoding).
In most cases, files are best saved in UTF-8. Forget about windows-1251.