Run jshell as script engine

example.jsh

//usr/bin/env jshell --show-version "$0" "$@"; exit $?
public class Runner {
  public static void main(final String[] args) {
    System.out.println("Runner#main");
  }
}

System.out.println("Executing class");
Runner.main(new String[0]);

final int code = 5;

/exit code

results.cmd

> jshell example.jsh
Executing class
Runner#main

> echo %ERRORLEVEL%
5

>

results.sh

$ ./example.jsh && echo $?
Executing class
Runner#main
5

$