How to use the Java Bytecode Decompiler to convert .class file to .java file

Hello everyone,

I trust that you are well. I am new to the world of IntelliJ Idea and I would like your assistance.

I have a folder of class files and I would to convert them in java files. I've read through forum and one of the main responses I have found is to use the Java Bytecode Decompiler which is part of the fernflower decompiler. I've installed the Java Bytecode Decompiler and enabled it on intelliJ, it's showing the .class files as human-readable file, but I don't know how to convert into a .java file. 

  Kindly find attached the screenshoot and I would like your assistance as soon as possible.

I am looking forward to hearing from you soon.

Best regards,

Christian Hangi