JEP 330
Cay Horstmann
cay.horstmann at sjsu.edu
Thu May 31 16:30:56 UTC 2018
Hi Rémi,
> The JEP also said that it simplify the writing of small utility scripts > and i think it is its major selling point.> There are a lot of
scripts (bootstrap, build, deployment, continuous > testing scripts,
etc) that should be written in Java instead of being > written in shell
because Java is cross platform.
I actually have a bunch of scripts that I wrote in Java (and then call
from a shell script or alias). But the "single file" thing isn't as
useful as it appears at first. Most of my scripts depend on some JAR
(JavaMail, Commons CSV, ...).
With a Python script, you use pip to manage those dependencies, and in
the script you just import them. In Java, the best I can do is rely on
Maven/Ivy.
Suppose I have a Java script that uses JavaMail and I want to give it to
a colleague. Let's assume that the colleague knows how to fetch the
dependencies into the Ivy cache. What would the shebang line look like?
A classpath into ~/.ivy2??? I don't know how to do that cross platform.
Now THAT would be a great problem to solve in the launcher.
Cheers,
Cay
--
Cay S. Horstmann | http://horstmann.com | mailto:cay at horstmann.com
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