Fwd: Call for feedback -- switch expressions in JDK 12

[Martijn Verburg]

Cheers,
Martijn


---------- Forwarded message ---------
From: Alex Buckley <alex.buckley at oracle.com>
Date: Sat, 30 Mar 2019 at 00:19
Subject: Call for feedback -- switch expressions in JDK 12
To: <jdk-dev at openjdk.java.net>


Hi everyone,

People often ask how they can contribute to the Java development
process. One of the easiest ways is to try out new features _on real
code_ and share your experiences. We would love to hear how you're using
the new language feature available on a preview basis in JDK 12 --
switch expressions.

Switch expressions make it easy to express multi-way conditionals in a
compact, readable manner. Unlike switch statements, switch expressions
don't fall through from one case to the next. Also, switch expressions
on enums don't require a default if the cases are exhaustive. Also,
multiple labels per case. See http://openjdk.java.net/jeps/325 for more.

To try switch expressions in your favorite environment:
- IntelliJ IDEA 2019.1:
https://blog.jetbrains.com/idea/2019/02/java-12-and-intellij-idea/
- Eclipse 4.11: https://www.eclipse.org/eclipse/news/4.11/jdt.php#Java12
- Apache NetBeans 11.0:
https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=103091452
- jshell in JDK 12: pass `--enable-preview`
- javac in JDK 12: pass `--release 12 --enable-preview`

What works? What doesn't work? What was surprising? (Asking about use of
the language feature, not setup of the IDE.)

Please respond here, or on the amber-dev list. Thank you in advance!

Alex