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Reposted by IntelliJ IDEA, a JetBrains IDE

Marit van Dijk @maritvandijk.bsky.social · 1d

For your weekend #Devoxx playlist:
Be more productive with @intellijidea.com, by yours truly
www.youtube.com/watch?v=ZWec...

Be more productive with IntelliJ IDEA by Marit van Dijk

YouTube video by Devoxx

www.youtube.com

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

Amazon runs some of the world’s largest distributed systems – but why did they pick Java as a main language for backend services?

👉 Find out in the interview with Jon Gjengset, a former Principal Engineer at AWS:
youtu.be/nOSxuaDgl3s

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

Fernflower is open-source software available at github.com/JetBrains/fe....

If you find it helpful, give it a star! ⭐️

GitHub - JetBrains/fernflower: Decompiler from Java bytecode to Java, used in IntelliJ IDEA.

Decompiler from Java bytecode to Java, used in IntelliJ IDEA. - JetBrains/fernflower

github.com

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

Simply run `fernflower Calculator.class <output-directory>`,
and Fernflower will analyze the .class file and recreate a .java file.

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

There's also the `javap` program, which comes with the JDK.
It can display classes, fields, and method signatures nicely,
but if you want to see the contents of method bodies, you need to use the `-c` flag.
Its output is hard to read and understand.

Fernflower to the rescue!

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

Let's say you have a compiled calculator program in a Calculator.class file.

Java bytecode in .class files is stored in a special binary format,
which is unreadable with a normal `cat` program.

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

Fernflower is a Java bytecode decompiler.
It can recreate a .java file from a .class file (which contains compiled Java bytecode).
This is useful in the context of reverse engineering, when you need to see the source code of a library but you only have access to its JAR.

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

IntelliJ IDEA includes an open-source Java decompiler called Fernflower.
But did you know that you can use it as a standalone CLI program?
And what's even better – it's now available on Homebrew!
To install it, run the `brew install fernflower` command in the terminal.

Learn more in the thread!

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 2d

That’s a wrap for us at @devoxx.com Belgium!

A huge thanks to the organizers, speakers, and community for an inspiring week.

And of course, thank you to everyone who stopped by the @jetbrains.com booth. It was a pleasure meeting you! 🙌

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 3d

👋 Are you at @devoxx.com Belgium? Come talk to the @kotlinlang.org team at the @jetbrains.com booth – we’d love to hear from you!

IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 3d

Stop eyeballing JSON – inspect and fix it.

In Kotlin notebooks, you can:
⚡️Flatten JSON into a dataframe
⚡️Flag anomalies, such as nulls, outliers, and dupes
⚡️Export problem rows for reporting

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 3d

Stop eyeballing JSON – inspect and fix it.

In Kotlin notebooks, you can:
⚡️Flatten JSON into a dataframe
⚡️Flag anomalies, such as nulls, outliers, and dupes
⚡️Export problem rows for reporting

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 4d

Visiting @devoxx.com Belgium? Come by the @jetbrains.com booth to meet the team behind Java support in IntelliJ IDEA and chat about your favorite features.

IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 4d

Java 25 has been out since September 16, and IntelliJ IDEA has offered support for it from day one.
Just use the current 2025.2 release – no extra updates needed. 🚀
Read more in this blog post 👉 jb.gg/rzcls4

Java 25 LTS and IntelliJ IDEA | The IntelliJ IDEA Blog

Full support for Java 25 is available in IntelliJ IDEA!

jb.gg

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 4d

Java 25 has been out since September 16, and IntelliJ IDEA has offered support for it from day one.
Just use the current 2025.2 release – no extra updates needed. 🚀
Read more in this blog post 👉 jb.gg/rzcls4

Java 25 LTS and IntelliJ IDEA | The IntelliJ IDEA Blog

Full support for Java 25 is available in IntelliJ IDEA!

jb.gg

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 4d

On Wednesday at @devoxx.com Belgium, the ‪@jetbrains.com team will give two talks – by @kpavlov.me and @vadim-briliantov.bsky.social!
Don’t forget to stop by our booth to chat about Java, Kotlin, and IntelliJ IDEA.
#devoxx

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 5d

🚀 Don’t miss our demo at @devoxx.com Belgium! And be sure to stop by the @jetbrains.com booth to see what’s new in @kotlinlang.org

IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 5d

Log grepping got you stuck?
❌ Endless scrolling in raw text
❌ Manual filters in Excel
❌ No clear picture of error trends

With Kotlin notebooks, you can:
⚡️ Parse logs into tables
⚡️ Filter 5xx server errors in seconds
⚡️ Plot error spikes over time

All this inside @intellijidea.com!

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 5d

Log grepping got you stuck?
❌ Endless scrolling in raw text
❌ Manual filters in Excel
❌ No clear picture of error trends

With Kotlin notebooks, you can:
⚡️ Parse logs into tables
⚡️ Filter 5xx server errors in seconds
⚡️ Plot error spikes over time

All this inside @intellijidea.com!

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 5d

Hello @devoxx.com Belgium!
Drop by the @jetbrains.com booth to chat about Spring Data, Spring 7, and what’s coming next in IntelliJ IDEA.
🎤 At 18:20, @maritvandijk.bsky.social will share IntelliJ IDEA tips to boost your productivity.

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 5d

ThreadLocal was the only way to share state in Java. 😱
From #Java 25, there’s a new one: Scoped Values! 🚀
Perfect for structured concurrency & millions of virtual threads. #Java25IntelliJIDEA 👇
jb.gg/r70wns

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 5d

The new #JavaAnnotatedMonthly has everything you need:
✅ Coffee ☕
✅ News, tips, and insights 👀
✅ Marco Behler as a guest author! 👇
jb.gg/lqxlm5

Java Annotated Monthly – October 2025 | The IntelliJ IDEA Blog

Check out the October edition of Java Annotated Monthly by JetBrains.

jb.gg

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 6d

We’re excited to be attending @devoxx.com Belgium in Antwerp!
Come say hi at the @jetbrains.com booth to talk about IntelliJ IDEA and Kotlin.
For Deep Dive participants, don’t miss Marco Behler’s session about the Spring Debugger today at 17:35.

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 9d

We’ve released the next minor update for IntelliJ IDEA 2025.2 – 2025.2.3!

Learn more about this update in our blog post 👇
blog.jetbrains.com/idea/2025/10...

IntelliJ IDEA 2025.2.3 Is Out! | The IntelliJ IDEA Blog

We’ve just released the next minor update for IntelliJ IDEA 2025.2 – v2025.2.3. You can update to this version from inside the IDE, via the Toolbox App, or by using snaps for Ubuntu. You can also d

blog.jetbrains.com

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 10d

Your place to let off steam 👇

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 10d

All episodes of The Marco Show are also available on your favorite podcast platform. 🎧

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 10d

New Marco Show episode! Marco talks with Gavin King (creator of @hibernate.org) about ORM myths, lazy loading, SQL vs repositories, and the future of Jakarta Data.
Watch now: youtu.be/Qvh3VFlvJnE

#TheMarcoShow #Hibernate #JPA #JakartaData

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IntelliJ IDEA, a JetBrains IDE @intellijidea.com · 11d

🥲 Me, writing a constructor in #Java before JEP 513: “Fine, I’ll just hack it with inline static method calls.” 👀
😎 Me now: “Validate first. super() later. Done." 🤯
blog.jetbrains.com/idea/2025/09...

Java 25 LTS and IntelliJ IDEA | The IntelliJ IDEA Blog

Full support for Java 25 is available in IntelliJ IDEA!

blog.jetbrains.com

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