[Jython-users] Jython 2.7.5 beta

[Stefan R. <ste...@gm...>]

Dear Jython Users and Developers,

Jython 2.7.5 is currently in beta and I'd like to remind you to test
your setups with the upcoming release. The biggest breakthrough of the
new release is support for Java 25. See
https://github.com/jython/jython/releases/tag/v2.7.5b1 for release
files and some release notes.

As announced earlier, javax.servlet imports are changed to
jakarta.servlet and we relocated org.python.util.PyServlet,
org.python.util.PyFilter and org.python.util.PyServletInitializer to a
new package org.python.servlet. Typically, frameworks scan for servlet
classes automatically, so in most cases you should not even notice the
change. However, if you reference these classes explicitly you need to
act: If possible, adjust your code or config files to point to the new
classes and update your dependencies to jakarta.servlet. If this
change is not feasible for you, please try to put the original classes
from org.python.util onto the classpath (copy them from Jython 2.7.4)
on top of jython.jar. Thanks to the relocation, this should be
possible without name conflict. Note that this most likely breaks
automatic discovery of jakarta-aware frameworks (they won't tolerate
javax.servlet imports anywhere in the codebase), but it should be fine
for old javax.servlet-based legacy setups. It would be nice if you
could report success or issues of this approach.

Another notable change is a more consistent matching strategy for Java
methods with var args. In Jython 2.7.5, the new behavior is strictly
opt-in by setting python.options.reflectedArgsLegacyMode=false in the
registry or on the command line (the default for now is true).
However, we would like to make the new strategy the default in future
releases, so please test your setup with the new strategy during the
2.7.5 release cycle. Ideally, adjust your usage or edge cases to the
new behavior during 2.7.5 to get future-proof. For more details and
background, see https://github.com/jython/jython/pull/425 and links
from there.

Successful testing!

Stefan