hello.java

///usr/bin/env jbang "$0" "$@" ; exit $?
//DEPS info.picocli:picocli:4.6.3
//DEPS morpher.java

import picocli.CommandLine;
import picocli.CommandLine.Command;
import picocli.CommandLine.Parameters;

import java.util.concurrent.Callable;

@Command(name = "hello", mixinStandardHelpOptions = true, version = "hello 0.1",
        description = "hello made with jbang")
class hello implements Callable<Integer> {

    @Parameters(index = "0", description = "The greeting to print", defaultValue = "World!")
    private String greeting;

    public static void main(String... args) {
        int exitCode = new CommandLine(new hello()).execute(args);
        System.exit(exitCode);
    }

    @Override
    public Integer call() throws Exception { // your business logic goes here...
        System.out.println("Hello " + greeting);
        return 0;
    }
}

morpher.java

///usr/bin/env jbang "$0" "$@" ; exit $?
//FILES META-INF/jbang-integration.list=morpher.list


import static java.lang.System.*;

import java.nio.file.Path;
import java.util.Collections;
import java.util.List;
import java.util.Map;

public class morpher {

    public static Map<String, Object> postBuild(Path temporaryJar,
                                                Path pomFile,
                                                List<Map.Entry<String, String>> repositories,
                                                List<Map.Entry<String, Path>> dependencies,
                                                List<String> comments,
                                                boolean nativeImage) {
        System.out.println("Integration... (out)");
        System.err.println("Integration... (err)");
        if (System.getProperty("failintegration") != null) {
            throw new RuntimeException("Failing integration...");
        } else {
            System.out.println("Integration OK (out)");
            System.err.println("Integration OK (err)");
            return Collections.emptyMap();
        }
    }
}

morpher.list

morpher