Why are Russian characters not accepted by the code?

Question

Java

I'm trying to display any Russian characters, but in the IDEA console there are only questions:
- I already indicated in the gradle build - I compileJava.options.encoding = 'UTF-8'
also set UTF-8 everywhere in the idea settings
- the characters are not only not displayed, but I also can't use them at all, for example, I'm trying to send request site.com/?q=котикиand writes llegal character in query at index N, but instead котики ??????

What to do?

Answer 1

in build.gradle add
tasks.withType(JavaCompile) {
options.encoding = 'UTF-8'
}