What caused the encoding to go wrong when assembling the JAR?

Question

Java

Hello! There is an application written in Java. Parses the site and, if necessary, sends an email. When working and running through Idea, the words in Russian were transmitted and displayed without changes, when building the project and running the Jar file, the Russian words turned into a "random mess". Where and what should be specified to fix this problem?

Answer 1

JVM Options
java -Duser.language=en -Duser.country=RU -Dfile.encoding=UTF-8
-jar
your.jar ".