JAR files are like EXE files except that they need a Java framework to run. Imagine them as EXE files on Windows which you can double click to launch the program. When you run an EXE file, it uses Windows OS support.
While Archiver tools like 7-Zip can extract content from JAR files, but doing that is pointless – we need to execute the files just as we run the EXE files. To know more information about How to open or run a JAR file on Windows visit here: JAR file on Windows