Document how a Jython script can be run using JBang

[wfouche]

Jython scripts occasionally require JAR files from Maven Central. Unlike Groovy, Jython lacks a built-in mechanism to resolve these dependencies. However, you can bootstrap a Jython script along with its Maven dependencies using JBang. This technique ensures that your Jython scripts can seamlessly access the necessary dependencies from Maven Central.

Create fiie Jython.java and add all required DEPS to it.

///usr/bin/env jbang "$0" "$@" ; exit $?

//DEPS org.python:jython-standalone:2.7.4
//DEPS io.leego:banana:2.1.0

import org.python.util.jython;

public class Jython {

    public static void main(String[] args) {
        jython.main(args);
    }

}

test.py

from __future__ import print_function

import io.leego.banana.BananaUtils as BananaUtils
import io.leego.banana.Font as Font

text0 = "Jython 2.7"
text1 = BananaUtils.bananaify(text0, Font.STANDARD)
print(text1)

Running test.py

$ jbang run Jython.java test.py

Output