I just discovered Jshell, a Java REPL shell. It's like Python's interactive shell , but in Java ;-)

It's not new. Jshell was introduced in ... Java 9. Shame to me I only learn about it in Java 23!

https://asciinema.org/a/nKxwuTgFPEeHgLfBakhcpomSO

#java #repl #shell #script #python #jshell

Using JShell With Standard Input

#java #jshell

https://blog.mrhaki.com/2024/10/java-joy-using-jshell-with-standard.html?m=1&utm_medium=erik.in&utm_source=mastodon

JTaccuino is a #JavaFX based notebook application for Java developers.
It is built for usages in education, interactive experimation with algorithms and possible more advanced use cases.
Java code execution is provided by #JShell, the awesome #Java REPL.
https://github.com/jtaccuino/jtaccuino

Устаревшие мифы про Java

С момента появления Java in 1995 много всего изменилось в мире как в часте софта так и железа. Изменился также и релизный цикл выпуска новых версий. Они начали появлятся гораздо чаще и привносить в язык много интересных возможностей. Язык буквально на глазах преображается и не отстает от трендов индустрии. Язык Java прошел большой жизненный путь и за это время вокруг него сформировалось много разлычных мифов и слухов. Часть из них рождались в холиварных спорах о том какой язык лучше. Часть имеют под собой реальное обоснование и связанны с различными ограничениями софта\железа существовавшими на тот момент, но с течением времени утратившим свою актуальность. В этой статье мы постараемся сфокусироваться как раз на мифах утративших свою актуальность.

https://habr.com/ru/articles/842384/

#java #jvm #jshell

#JShell aka Java #REPL finde ich immer wieder ein sehr nützliches Tool, wenn man "mal eben" etwas Code evaluieren will

Mejor tarde que nunca, pero por fin tenemos un playground "oficial" para java 🎉

https://dev.java/playground/
#java #jdk21 #jshell

Two weeks ago I promised a blog post about the process we use for automating code samples verification in our #evitaDB documentation and now I'm keeping that promise.

The approach described, which takes advantage of #JUnit5 dynamic testing and #JShell REPL, looks like a novel approach. I haven't been able to Google any other project that documents something similar.

So if you have a similar use case, read on and get inspired.

https://evitadb.io/blog/06-document-examples-testing

Quitting #jshell on #osx takes several seconds, I wondered why and ran async-profiler, seems it's related to updating OSX settings (see flamegraph)

Doesn't seem to happen when you provide a script file that contains /exit.

Any ideas how to speed up the #java OSX settings API?

java/util/prefs/MacOSXPreferencesFile.addKeyToNode

Want to have fun with timezones and dates in #Java #JShell? Check out my article in #JavaMagazin edition 6.2023: "Zeitzonen und das Java-Tool jshell. Ein Tool für jede Zeitenwende." It even made it to the cover :-)

https://entwickler.de/java/jshell-zeitzonen

@sparsick Using #Java 's #JShell for this:

echo println(UUID.randomUUID()) | jshell PRINTING -

"Can I finally use Java as a scripting language and call it JavaScript? - No, you can’t call it JavaScript for obvious reasons." 😂

#JShell

https://medium.com/@adambgoode/scripting-with-java-10-and-jshell-497d6fdbf8b5

@sundararajan_a came up with clever usage of #Java TOOLING.jsh #JShell script.

> We can use that jextract_jdk's jshell & define jextract command to extract a C headers. We import the generated class to call native method. 😀

See details on the screenshots at https://twitter.com/sundararajan_a/status/1636382493262909441

How to use #JShell in #Java

https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/Java-JShell-Online-Commands-How-to-Tutorial-Exit?utm_medium=erik.in&utm_source=mastodon

Tomorrow I’ll do a demo internally of what I’ve been working on recently, so I prepared a #jshell environment for poking around the innards of the system directly while it’s running. Neat stuff.

A new Y2K bug seems to be approaching, and we still have time to prevent it! Or you can already schedule a long holiday for the year 2038... with #Java and #jshell and @frankdelporte!

https://foojay.io/today/still-time-to-schedule-your-holiday-for-2038/

https://www.youtube.com/watch?v=-CPrq3NxPOE

#foojaytip

In which a family feud arose while playing Rummikub that required a quick timer to solve. #Teaching #Opportunity #Java #JShell

In the Azul blog post "9 Outdated Ideas About Java", I take a look into some false assumptions and outdated ideas about #Java based on early versions.

Because of the work by the community, you can't compare Java from the early days with the versions that have been released every 6 months since 2018. And with excellent tools like #jshell, #jpackage, #jbang, #sdkman, plugins by @gluonhq, and many more, the developer experience has seen a tremendous evolution.

https://www.azul.com/blog/9-outdated-ideas-about-java/

#openjdk

Funny to see this image being shared by @nixCraft. Just last week, I described exactly this problem with some #Java #JShell experiments on https://webtechie.be/post/2022-12-01-schedule-holiday-2038. The problem is actually worse! When adding one second to 2038-01-19T03:14:08Z[UTC], you don't travel back in time to 1970, but 1901-12-13T20:45:52Z[UTC].

How do they say it? You're not a real programmer if you never had to deal with dates, times, and timezones? ;-)

I already scheduled my holiday for January 2038, and so should you! Check out why in this blog post, an experiment with date, time, and jshell...

https://webtechie.be/post/2022-12-01-schedule-holiday-2038/

#Java #JShell #Y2K #2038

Using the #JShell API to implement a #Java Source Browser https://bit.ly/3gs03Ww by @sundararajan_a