Nicolai Parlog 🇺🇦🕊️ @nipafx Twitter profile

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Nicolai Parlog 🇺🇦🕊️

3 years

I'll also collect all threads in this thread of threads. 🧵² From modules to serialization, from pattern matching to value types, form generics to networking, whether it's new versions or upcoming JEPs - here they all are (and many more to come). Enjoy, like, retweet. ❤️

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

In two weeks, #Java19 will be released with some of Java's most anticipated features: virtual threads and structured concurrency! 🤩 To make the best use of virtual threads, servers/frameworks need to support them - here's a list of those that do (reply with those I missed). 🧵

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

"What nobody tells you about documentation" #mindblown

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Nicolai Parlog 🇺🇦🕊️

@nipafx

4 years

Yesterday evening, we spent about two hours digging through the German #Corona app and I'm thoroughly impressed. This is a modern project, developed out there as free software (APL 2.0) on GitHub, and it has stellar documentation. Let's have a look! 1/🧵

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Nicolai Parlog 🇺🇦🕊️

@nipafx

11 months

#Java21 is gonna be big! One recent addition: // in void main() { System.out.println("Ha!"); } # run with java That's all it takes. 😮 More on that and the rest of the on-ramp in today's Newscast:

Script Java Easily in 21 and Beyond - Inside Java Newscast #49

To give Java and programming beginners a better learning path, JEP 445 proposes to allow stand-alone main methods that are non-public, non-static, and don't ...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

Just finished adding #Java13 changes to my slide deck covering everything new after 8: (2D slides; use PgUp/Down) It has 250 slides! I double dare you, say 'Java is slow' one more goddamn time!

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

val html = ` <div> <p>OMG, I can't <b>believe</b> we get multi-line strings in #Java12 !</p> </div>`.align(); #JavaNext

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Nicolai Parlog 🇺🇦🕊️

@nipafx

11 months

#Java21 will be bonkers! So. Many. Features! Finalized, improved, brand-new - a ton of each. I'll tweet them out one by one throughout the day with links to JEPs and videos. 🧵 If you can't wait that long, watch today's Inside Java Newscast:

All That is in Java 21?! 😱 - Inside Java Newscast #50

Java 21 is almost too good to be true: It finalizes virtual threads, sequenced collections, generational ZGC, and the pattern matching basics; evolves the st...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

4 years

Nice.

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Java devs no longer need the visitor pattern! With sealed classes (final in #Java17 ) and pattern switches (preview in 17), #JavaNext offers a better and shorter solution to the problems the pattern addresses.

Visitor Pattern Considered Pointless - Use Pattern Switches Instead // nipafx

In modern Java, the visitor pattern is no longer needed. Using sealed types and switches with pattern matching achieves the same goals with less code and less complexity.

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

#Java19 is gonna be an amazing release 🤩 - the most break-through in a few years and probably for a few years to come. Here's why, from least to most groundbreaking feature (IMHO). 🧵 (If you want to follow up on something, the video description has tons of links.)

Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

In a regular cadence of Java releases, #Java19 will stand out as the most groundbreaking one, probably for years, Here's why:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

In a few days, #Java turns 28 and to celebrate we got something special for you: 28 HOURS OF JAVA - an early birthday party with guests, games, presentations, and code. Join @ammbra1508 , @Sharat_Chander , and me from Saturday 04:00 to Sunday 08:00 (UTC).

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

You know #Java16 's records. You maybe also know Lombok's @Data and #Kotlin 's data classes. They're all just boilerplate-avoiders, right? Wrong. Records are all about something else and that makes them better* than the other two.

Why Java's Records Are Better* Than Lombok's @Data and Kotlin's Data Classes // nipafx

While all three remove boilerplate, the similarities don't go much further. Records have stronger semantics with important downstream benefits, which makes them better*. (* not always; depends on...

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

You're never gonna believe this, but my book, The Java Module System @ManningBooks , is finally released! 👻 Final PDF can be downloaded now, epub and Kindle will follow shortly, dead-tree version on July 5th. (With code "fccparlog" you get 37% off.)

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Here are 11 improvements you get when updating to #Java16 later today: from records and type patterns to `Stream`-additions and Unix domain sockets, from creating installers to more performance and observability. 🧵👇🏾 (Longer form with tons of links: )

Definitive Guide To Java 16 // nipafx

A detailed guide to Java 16: records, type patterns, sealed classes; Stream and HTTP/2 additions, Unix domain socket support; Project Panama previews, packaging tool, performance improvements, and...

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 months

Babylon is #OpenJDK 's newest big project, aimed at easing execution of Java code on the GPU, which will unlock machine learning and artificial intelligence on the JVM. More about it's background, prototypes, and plans in the latest Inside Java Newscast:

Java On The GPU - Inside Java Newscast #58

Babylon is OpenJDK's newest big project to improve Java, specifically aimed at easing execution of Java code on the GPU, which will unlock machine learning a...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

Pattern matching in Java is taking its first steps out of the lab with switch expressions: T result = switch (arg) { case L1 -> e1; case L2 -> e2; default -> e3; } Personal guess/hope: we get that in #Java11 . Would be awesome!

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

In a regular cadence of Java releases, #Java19 will stand out as the most groundbreaking one, probably for years, Here's why:

Java 19 - The Best Java Release? - Inside Java Newscast #27

JavaOne is back! ➱ https://oracle.com/javaoneJava 19 is the first release to preview Project Loom's virtual threads and structured concurrency, Project Amb...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

#ProjectLoom 's virtual threads will make high performance in concurrent systems attainable with much simpler code. But Loom aims for even more and wants to make the code clearer and more robust by introducing *structured concurrency*. Here's what that's all about. 🧵

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Nicolai Parlog 🇺🇦🕊️

@nipafx

7 years

#Java9 comes out today! 🎉🎆 I celebrate it with some awesome Javaists on my brand new 🎈 YouTube channel: 🎇

Welcome, Java 9!

Java 9 is out today and with other members of the community I'm throwing a welcome party. Get an all around view on the new Java release with various opinion...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

8 months

Excited for the #Java21 launch? So are we! 🥳 So much so that we'll be talking about it for 8 hours straight: technical explorations, expert interviews, and community voices at @parisjug and @jugka . Be there on Tuesday, Sep 19th, 1300-2100 UTC! Details:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

What's it called when multiple threads execute at the same time? Parallelism? Concurrency? 🤔 Is there a difference? (Spoiler: Yes!) Let me explain in a few tweets, ripping off @pressron 's #InsideJava blog post "On Parallelism and Concurrency". 🧵

On Parallelism and Concurrency

A little over a week ago, we asked the Java user community for feedback on a new construct for structured concurrency we unveiled as part of Project Loom. It is intended to both make writing correct...

inside.java

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

According to @OracleDevs , there are 12 million #Java devs. According to @snyksec , 60% of them primarily use Maven. Did you know the build tool used by ~7 million people is maintained by 5-10 core developers? Ask your lead to give you a day or two to tackle one of these issues.

🦉 Apache Maven

@ASFMavenProject

5 years

The up-for-grabs link for Maven is now officially registered at @UpForGrabsOSS too, visit

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

#Java18 comes out later today - what can you expect from Java's newest release? Here's a 🧵 with one tweet per feature - short and sweet. For more details and links, read this blog post: For questions, join our #JDK18 AMA later today. 👇🏾

All About JDK 18 - Inside Java Newscast #21 // nipafx

Refinements in pattern matching and Panama's foreign and vector APIs; a new command jwebserver and a new IP address resolution SPI; preparing code for UTF-8 becoming the default character set and for...

nipafx.dev

Billy Korando 🍃☕️ 🐈🐈

@BillyKorando

2 years

Hey #Java developers, ☕️ #JDK18 is arriving of March 22nd. Join us in a Twitter space @ 20:00 UTC where we will cover what’s coming in the newest version of Java as well as answer questions! See you there!

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

#Java11 is out! 🥳🎉 Download, install, experiment: Want to migrate from 8 to 11? Here's everything you need to know about that: (Licensing, LTS, preparations, version requirements, branching, migration challenges, everything!)

All You Need To Know For Migrating To Java 11 // nipafx

Migrating from Java 8 to Java 11? This has got you covered: licensing, long-term support, preparations, version requirements, migration challenges, and more.

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

8 months

Ready for a new programming paradigm in Java? #Java21 is the first release with all essential pattern matching features finalized. On the last stop on #RoadTo21 , we're exploring that in depth and see how they come together for data-oriented programming:

Java 21 Pattern Matching Tutorial #RoadTo21

Java 21 is the first Java release with all essential pattern matching features finalized: sealed types and type patterns in an improved switch; also final (a...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

#Java12 is out! 🥳🎉 Download, install, experiment: Want to know what's new? Here's the definitive guide: (Migration considerations, version requirements, new features, JVM improvements, deprecations, everything!)

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Java turns 26 soon, so mark your calendars and get your ☕, folks, it's time for another live stream marathon! Or rather, a relay race. On May 29th, I'll be joined by @sebi2706 , @BillyKorando , and @jitterted for 26 hours of Java. #26hJava Check for more.

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Alternative to the 9 lines: var file = Path.of(fileName); return Files.readAllLines(file); Won't this mostly create "legacy" code because most code is "legacy" (i.e. not using current features and APIs)?

Nat Friedman

@natfriedman

3 years

We've started work to add GitHub Copilot support for vim and JetBrains. Quick preview of Copilot in IntelliJ:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

7 months

Couldn't be there on Tuesday for the #Java21 live stream? Or maybe just not the entire 8 hours? 😳 No worries, the video is up under the same URL () and I just added time stamps, so you can easily skip to the portion you find most interesting. Enjoy!

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

Since #Java11 you can write single-source-file programs and throw them at the JVM without having to compile them first: And the crazy thing, you can add a shebang line and write scripts this way! 🤯

Scripting Java 11, Shebang And All // nipafx

On Java 11+, you can run a single source file without compiling it. Beyond experimentation, you can write scripts this way. Even shebang is supported!

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Virtual threads are amazing, but only half of Loom's play. The other half is making use of quasi infinite threads with a new concurrency programming model: Structured Concurrency. JEP 428 proposes that - will it make it into #JDK19 ? 🤞

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Nicolai Parlog 🇺🇦🕊️

@nipafx

7 years

After ~2 years of development #JUnit5 is out! 🎉 Thank you @sam_brannen , @marcphilipp , @sormuras , @johanneslink et al

Release JUnit 5.0.0 · junit-team/junit5

JUnit 5.0.0 = Platform 1.0.0 + Jupiter 5.0.0 + Vintage 4.12.0 See Release Notes in User Guide.

github.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

I've been writing more Twitter threads since the beginning of 2021 and I really enjoy it. It's challenging but rewarding to cut a topic into a dozen little pieces that tell a story yet stand on their own. Judging by your reception, you like them, too. So they'll keep coming! 😃

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

We released #JUnitPioneer 1.7.0. 🥳 Thanks to @filiphr , it comes with a JSON argument source for parameterized tests.

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

Who needs chocolate when they can have Java features in their advent calendar? (Yes, I'm late, but fashionably so. 😋) From language features to API additions, from tooling to performance, here are 24 Java features you missed in 2022! As 📺: As 🧵: 👇🏾

24 Java Features You Missed In 2022 - Inside Java Newscast #39

JDK 18 and JDK 19 preview a number of big ticket features but they also come with a lot of smaller improvements. Here are 24 less-known features that were ad...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

I never lie to my 8yo daughter. Even when she asks about sickness and death, sex, or now war - I may simplify but never evade nor sugarcoat. Today she asked me whether Putin may fire atomic missiles. I lied: I said "no".

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

📢 The long awaited finalizations of pattern matching in switch () and of record patterns () are now proposed to target #JDK21 . 🙌🏾 (Looks like this happened only a few hours ago, so you heard it here first, folks!)

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Writing `equals` like this is really fun. 😀

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Billy used all the best words already, so I'm left with: Same here. Ok, I have a few more. 😜 I'm super-thrilled to be on the very team that evolves Java and that I can now spend *all* my time sharing the amazing work they're doing.

Billy Korando 🍃☕️ 🐈🐈

@BillyKorando

3 years

Happy to announce that I am joining the Java Developer Relations team @Oracle and today is my first day! 🤗☕️ I have been a Java developer for over a decade and I'm super excited by the opportunity to help grow and shape the Java Community! Let's get started!

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Project Loom aims to bring structured concurrency to Java, a concept that compares to "regular" concurrency like structured programming compares to GOTO-programming. Dip your toes into this concept with the latest Inside Java Newscast:

Project Loom Brings Structured Concurrency - Inside Java Newscast #17

Project Loom aims to bring structured concurrency to Java, a concept that compares to "regular" concurrency like structured programming compares to GOTO-prog...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

4 years

This is really cool, a curated site listing recent developments in Java: If done right, this can make it an order of magnitude easier to observe Java's evolution. Great initiative! Check it out, bookmark it, read it. #MovedbyJava

Inside Java

News and views from members of the Java team at Oracle

inside.java

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

#OpenJDK 's GitHub star history. 🤩

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Minecraft now on #Java16 . 😮

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

A number of very interesting announcements at #JavaOne about: * #JavaFX 💫 * #GraalVM 🏆 * high performance JDK 8 🏃 * generational ZGC 👶🧓 Let's have a look! 🧵 (If you prefer video, watch the latest Inside Java Newscast: )

GraalVM in OpenJDK and more JavaOne Announcements - Inside Java...

Oracle will contribute GraalVM's just-in-time compiler and native image technology to OpenJDK. It will also create EA and GA builds for JavaFX 20+ and is har...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

10 months

📣 #Java21 is no long-term support version! Don't worry, there'll be plenty of JDK 21 builds that get free, timely updates and lots of companies that offer commercial support, but that doesn't make 21 "an LTS version". Let's talk semantics! 🧵 As video:

Java 21 is no LTS Version - Inside Java Newscast #52

Java 21 is no long-term support version because it's not something that can get long-term support. JDK 21 could but only OpenJDK can make decisions about JDK...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

Static `Predicate::not` will make it easier to invert Boolean lambdas in #Java11 : List<String> list = reader .lines() .filter(not(String::isEmpty)) .collect(toList());

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Some people say Java evolves slowly. I say, we got collections in 1998 and 💥 25 years later we (probably) get `List::getFirst` and `getLast`. 😁 But also a way for easy reverse iteration/streaming. Let's have a look! 🧵 (If you prefer video: )

Sequenced Collections, Purity, and more at JavaOne - Inside Java...

Sequenced collections introduce an abstraction for collections with a known encounter order like all lists and some sets and maps. It will be easy to add, ge...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 months

Don't worry if you missed the #1BRC stream. You can watch it here for the next ~60 days:

Twitch

Twitch is the world's leading video platform and community for gamers.

www.twitch.tv

Gunnar Morling 🌍

@gunnarmorling

3 months

📢 Curious to learn the tricks behind #1BRC for processing 1B rows really fast? Then join @ElliotBarlas , @royvanrijn , @thomaswue , and me on Thursday this week for a live stream with @nipafx , where we'll dive into all the secrets ;) 🗓️ Feb 1, 7pm UTC 📺

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Nicolai Parlog 🇺🇦🕊️

@nipafx

8 months

We got something special for you: Put your #Java boots on and come with us on the #RoadTo21 . First video goes live tomorrow.

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

JEP 427 proposes the third preview of pattern matching in switch with two changes: * guarded patterns (`&&`) are out; `when` clauses are in * total patterns no longer match `null` JEP: More in the next Newscast - subscribe:

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@nipafx

5 months

#Java22 will be forked and feature-frozen later today. It finalizes: * unnamed vars/patterns * FFM API * multi-file programs * G1 region pinning And it previews a lot more: * statements before this/super * stream gatherers * … More on all that:

Java 22 Unpacking - Inside Java Newscast #59

JDK 22 will be released on March 19th 2024 but it's forked today (Dec 7th 2023) and so its feature set is final: It finalizes unnamed patterns and variables,...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

[NEW VIDEO] In #Java12 , old imperative `switch` becomes more powerful and elegant: boolean b = switch (bool) { case TRUE -> true; case FALSE -> false; case FILE_NOT_FOUND -> throw new RidiculousLogicException(); }; Details:

First Contact with Switch Expressions in Java 12

With Java 12, `switch` is no longer just a statement, but becomes an expression. That means it can have a return value (instead of having to assign or return...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

A little later today, #JDK18 will fork from the main development line, thus feature-freezing Java's next release. From pattern preview to foreign function incubator, from Unicode to a web server - here's what you can expect! 🧵

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@nipafx

4 months

What are Java's plans for 2024? Besides improving/finalizing current previews... * Amber: withers🤞🏾, primitive patterns (JEP 455) * Loom: reduce pinning/capturing * Panama: FFM buffs, jextract * Valhalla: JEP 401 More on that and other projects:

Java's Plans for 2024 - Inside Java Newscast #61

In 2024, Java keeps evolving. Let's see what the OpenJDK projects Amber, Babylon, Leyden, Lilliput, Loom, Panama, and Valhalla plan for this year and how tha...

www.youtube.com

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@nipafx

4 years

If you want to see how the JDK APIs evolve across versions, check out - very cool! (Thanks @JiriPejchal for pointing it out.)

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@nipafx

6 months

Remember earlier this week, when Java's stream API didn't have that intermediate operation you needed? It will soon get it. Which operation am I talking about? All of them! Thanks to Gatherers, we can easily and seamlessly implement our own:

Better Java Streams with Gatherers - Inside Java Newscast #57

Java's stream API needs more intermediate operations but instead of implementing some of them, Stream::gather, a new meta-operation, allows the JDK and us to...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Over the last two days I experimented a bit with Project Loom and built... * a folder size analyzer * an echo server (thanks for the help, @mmirwaldt ) Each with and without virtual threads, which makes a huge difference (🧵👇🏾). Check it out:

GitHub - nipafx/loom-lab: Experimenting with Project Loom

Experimenting with Project Loom. Contribute to nipafx/loom-lab development by creating an account on GitHub.

github.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

@gunnarmorling @java Static method `Predicate::not`, which I really like because I prefer method references over lambdas: .filter(string -> !string.isEmpty()) // with static import .filter(not(String::isEmpty))

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

Happy #Java20 release day, everybody! Get the freshest JDK right here: Let's have a quick look at how the preview features progressed this release (after we looked over all the small and not-so-small additions to 20 last week 👇🏾). 🧵

Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

The list of big features #Java20 finalizes is rather short: . (That was it already. 🥱) All 20 improves is security, performance, tools, regex, Unicode, and all previews. Maybe worth a closer look after all? ("This thread should've been a blog post." )

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@nipafx

3 years

#JavaForever

Gunnar Morling 🌍

@gunnarmorling

3 years

⏱️ Just ten more days until the release of @java 17, the next version with long-term support! To shorten the waiting time a bit, I'll do one tweet per day on a cool feature added since 11 (previous LTS), introducing just some of the changes making worth the upgrade. Let's go 🚀!

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@nipafx

5 years

#Java13 comes out tomorrow and it contains "JEP 350: Dynamic CDS Archives". That makes application class-data sharing more usable by letting you create an app class-data archive during a regular program run. I updated my post on AppCDS to reflect that:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

7 months

Will Java get if/else and try/catch expressions or union types? Why are there no named arguments or mutable records? What about ML, AI, and gaming and when will Valhalla land? I asked @BrianGoetz these and more of your questions:

Brian Goetz Answers Your Java Questions

Whether if/else and try/catch expressions, named arguments, or union types; machine learning or a timeline on Valhalla, you had a lot of questions related to...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

How We Got the Generics We Have (Or, how I learned to stop worrying and love erasure) by @BrianGoetz After 18+ months, I finally got around to read this one and it's really informative. Here are the closing arguments to what pushed Java to erasure. 🧵

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

#ProjectValhalla is all about performance? That's what I thought: It gives us user-defined primitives with the resulting great performance and that's mostly it. But in this conversation, I learned how it is much more than that: It aims to overcome Java's original sin. 🧵 1/9

Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

My conversation with @BrianGoetz about the current state of #ProjectValhalla - Java's original sin, unifying the type system, expanding generics, current work, the project timeline, and more:

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@nipafx

3 years

There's a third cool thing that JEP 406 () brings to #Java17 : guarded patterns! But... isn't this just like common &&? Why reinvent that wheel? Because it makes patterns more expressive and coding with them more flexible. Here's how! 1/7

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

The list of big features #Java20 finalizes is rather short: . (That was it already. 🥱) All 20 improves is security, performance, tools, regex, Unicode, and all previews. Maybe worth a closer look after all? ("This thread should've been a blog post." )

Java 20 🥱 // nipafx

The list of big new features that can be used in production with Java 20 is rather short: . (That was it already.) Pretty boring, these six-month releases. We really don't need to take a closer look...

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

My conversation with @BrianGoetz about the current state of #ProjectValhalla - Java's original sin, unifying the type system, expanding generics, current work, the project timeline, and more:

The State of Project Valhalla with Brian Goetz

Conversation with Project Valhalla lead Brian Goetz about Java's original sin, unifying the type system, expanding generics, current work, the project timeli...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

#Java17 is around the corner, but not much changed for the module system since #Java11 . If you want to learn all about it, check out my book The Java Module System. Only today, you can save 42%:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 months

Does #Java22 kill build tools? 😳 Of course not, but it does push their use back a bit and in the right circumstances, that's very good. I explain what I mean by that in the latest Inside Java Newscast:

Does Java 22 Kill Build Tools? - Inside Java Newscast #63

#Java 22 brings multi source-file execution to the platform. It allows us to run programs consisting of multiple source files and even dependencies with just...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

What makes Java *Java*? Why is it so well-suited to writing safe, useful, performant, and maintainable code? In "The isthmus in the VM" (), JVM architect John Rose describes 16 core Java principles that answer those questions. Here they are (verbatim). 🧵

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

You think Java is slow? Cumbersome? Good for serious software but sucks for scripting, exploration, education? Well, kinda 🤡... No, wait, it's gotten so much better! 😇 Here are 10 things that make Java quicker than you think. (Code and many links: )

Quicker Java and JDK 16 compatibility - Inside Java Newscast #3 // nipafx

A walk through language features, APIs, and JDK capabilities that make Java quicker to use with less ceremony and more immediate results. Also, a rundown of some of the projects with all tests green...

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

After an eventful September, I'm taking two weeks off. On my way to Vienna now, then onwards towards Brasov in Romania for 12 days of hiking in the Carpathian Mountains. 🏞🧛 So no Java tweets during that time but probably crappy phone pictures of beautiful landscapes. 😉

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

"What is the best unknown feature of #Java ?" Great answer by Anabadyo Das: 1. Stamped Locks 2. Concurrent Adders 3. Parallel Sorting 4. New Date API 5. Controlling OS Processes 6. Exact Numeric Operations 7. Secure Random Generation 8. Optional

What is the best unknown feature of Java?

6 people want answers to this question. Be the first to answer.

www.quora.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

Moving effectively on the Linux command line (by @HerrDoktorFunk ; ):

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

What happened recently in JDK development? Amber: * Pattern Matching for `switch` * Array and Record Patterns * Primitive Type Patterns Valhalla: * Primitive Objects * Unifying Basic Primitives with Objects More in #JDKNews #2 :

Patterns, `switch`, and Valhalla's Primitive Classes - JDK News #2

Project Amber brings new patterns and puts them into `switch` while Project Valhalla takes off and proposes introducing primitive classes - script: https://n...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

What is OpenJDK? Can you download it? Does it have LTS? Is it dangerous for your kids?! Answers to those and more questions in the latest Inside Java Newscast:

What is OpenJDK? - Inside Java Newscast #28

JavaOne is back! ➱ https://oracle.com/javaoneWhat's "OpenJDK" (or "the OpenJDK"?), how does it work, and what does it do? Here's the answer to these questi...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

8 months

Happy #Java21 release day, everybody! 🥳 I hope to see you all later for our live stream (13:00-21:00 UTC / 15:00-23:00 CEST): Until then, I wanna find out: What finalized feature are you looking forward to the most to put into production?

virtual threads

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pattern matching

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generational ZGC

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sequenced collections

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

Q: How do you get/add/remove the first/last entry of a list, deque, sorted set/map, or any other collection with encounter order? How do you iterate in reverse order? A (on #Java20 ): Inconveniently 😒 to not at all 🙅🏾‍♂️. A (on #Java21 ): Easy! 😁 Let me show you how! 🧵

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

I'm sure you've encountered the annoying situation where you chain constructors but can't smoothly call the right one with `this(...)` or `super(...)` because you need to do work before, which you can't: no statements before this/super! Behold JEP 447:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

4 months

"We'll use Java8."

Flame (炎)

@yanti8ve

7 months

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

When it comes to using switch in modern Java, there are three decisions to be made: * colons or arrows? * statement or expression? * labels or patterns? In my new blog post, I examine each decision to find out how to best use modern switch.

How To Use switch In Modern Java // nipafx

Since Java 14 introduced switch expressions, using switch isn't as straight-forward as it used to be: colons or arrows, statement or expression, labels or patterns? Here's how to best use switch in...

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Three pages to bookmark:

Inside Java

News and views from members of the Java team at Oracle

inside.java

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Now that Loom's virtual threads are merged and ship with #JDK19 , what can you do to prepare your code base? Here are 5 things to prepare and keep in mind:

News Grab Bag: Loom Virtual Threads, Lilliput, Pattern Matching, ......

JavaOne is back! ➱ https://oracle.com/javaoneProject Loom's virtual threads are merged and ship with JDK 19 - here's to prepare for them. Also, news on Pro...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Who's hungry for #JDK18 ? * pattern matching refinements * changes to vector API and foreign function & memory API * simple web server * IP address resolution SPI * UTF-8 by default * more All about that in the latest Inside Java Newscast:

All About Java 18 - Inside Java Newscast #21

Java 18 brings refinements in pattern matching and Panama's foreign and vector APIs; a new command `jwebserver` and a new IP address resolution SPI; preparin...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

If on `git push`, you get… WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! …it's because GitHub updated their RSA SSH host key. Fix: ssh-keygen -R ssh-rsa $KEY= Details and $KEY here:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

Last week I asked for sources on how the JVM works under the hood, so I could finally understand (some of) its magic ways. I got a lot of helpful replies and want to share them here. Let's start with books. There seems to be no definitive guide, but many good sources. 1/6

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

void main() { println("Hello, world!"); } Latest Inside Java Newscast goes into the proposed on-ramp ☝️ that requires programming/Java beginners to learn way fewer concepts before getting started.

Starting (With) Java, Made Simple - Inside Java Newscast #35

Visibility, classes, methods, instance and static members, parameters - a newcomer to programming needs to learn all of these concepts to truly understand a ...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

Amber, Galahad, Leyden. Lilliput, Loom, Panama, and Valhalla. What happened in these #OpenJDK projects in 2022 and what will be worked on in 2023? And why am I such a fanboy? 🏟️🚩 A thread. 🧵 (If you prefer video, check the latest Inside Java Newscast: )

Java's Plans for 2023 - Inside Java Newscast #40

A summary of what happened in 2022 and what will probably happen in 2023 for Projects Amber (pattern matching, relaxed `main` and `super()` and much, much mo...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

If you're interacting with native code from Java, you need to know about Project Panama. I talked with its lead Maurizio about: * new APIs and jextract * comparisons with JNI and Unsafe * interaction with Valhalla * platforms * timeline * much more...

The State of Project Panama with Maurizio Cimadamore

Conversation with Project Panama lead Maurizio Cimadamore about the project's core mission, the proposed APIs and tools, timeline for the next steps, compati...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

I infer from this that neither monoliths nor microservices are the problem, but people are. cc @AbrahamMarin , @stilkov , @odrotbohm

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Pattern matching in switch will have its third preview in #Java19 . It comes with two changes: * guarded patterns (`&&`) are out; `when` clauses are in * `null` needs to be handled by a specific `case null` More in the latest Inside Java Newscast:

WHEN and NULL In Pattern Matching - Inside Java Newscast #24

JavaOne is back! ➱ https://oracle.com/javaoneJEP 427 proposes two changes to pattern matching in switch: 1. Guarded patterns, which belonged to patterns, a...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

1 year

Java's future is stock-full of great features but it doesn't come for free. A few technologies hold Java back and will be removed - in the latest Inside Java Newscast I go over all of them with advice for what you have to do to get your code bases ready.

Future Java - Prepare Your Codebase Now! - Inside Java Newscast #41

What do the security manager, applet API, finalization, and primitive wrapper constructors have in common? What about CMS, Nashorn, RMI activation, and biase...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

One of my favorite IntelliJ keyboard shortcuts: "Rollback lines" (Ctrl+Alt+Z for me) Reverts the hunk that the cursor is currently in. Glorious to quickly undo local experiments. What's your IDE shortcut tip?

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

From compact record constructors to pattern matching, from generic wildcards to chaining predicates and comparators, from jpackage to jlink - here are 11 #Java tricks handpicked from . 🧵 (Musical version of this thread: ) 0/11

11 Tricks From dev.java - Inside Java Newscast #14

#Java #Java17 #OpenJDK #JDKFrom compact record constructors to boolean expressions in pattern matching, from generic wildcards to chaining predicates and com...

www.youtube.com

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 months

Remember, if you implement `equals` with `instanceof` you *must* make either `equals` or the class final! Otherwise, subclasses can override `equals`, which will usually break the symmetry or transitivity requirements of `equals` and lead to nasty bugs.

How To Implement equals Correctly // nipafx

A fundamental aspect of any Java class is its definition of equality. It is determined by a class's equals method. Let's see how to implement it correctly.

nipafx.dev

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Nicolai Parlog 🇺🇦🕊️

@nipafx

5 years

Java releases and language features: #Java8 , after 3 years of development: * lambdas * default methods #Java9 , 3.5 years later: * module system * private interface meth. * try (resource) * <> on anonymous classes #Java13 , 2 years later: * var * switch expressions * text blocks

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Nicolai Parlog 🇺🇦🕊️

@nipafx

6 years

Q: Why does this print "1, 2, 4", not just "1, 2"? Integer[][] arr = {{1, 2}, {3, 4}}; (arr) .flatMap(Arrays::stream) .takeWhile(e -> e != 3) .forEachOrdered(System.out::println); A: #Java9

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Do you dream of "value types" in Java? So do I! Hence I was thrilled to see that Project Valhalla is slowly coming out of exploration with two draft JEPs. Here's what they currently propose. 🧵👇🏾 (If you prefer video: https:/www.youtube.com/watch?v=WBvTilbh8S0&t=344s) 1/10

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Nicolai Parlog 🇺🇦🕊️

@nipafx

3 years

Learn all about #Java17 from the horse's mouth as it comes out (🤮🐴 😁) at the free #OracleDevLive on Sept 14th (1700-2400 CEST) and 16th (1000-1700 CEST). We'll have hands-on labs, @venkat_s , @pressron , yours truly, and much more! See you there:

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Nicolai Parlog 🇺🇦🕊️

@nipafx

2 years

Yesterday, Loom officially submitted JEP 425 - the proposal for virtual threads. Just now, we published Inside Java Newscast #23 , which dives deep: scheduling, (un)mounting, capturing, pinning; observability, and what you can do for optimal scalability!

Virtual Thread Deep Dive - Inside Java Newscast #23

JavaOne is back! ➱ https://oracle.com/javaoneNow that Project Loom's JEP 425 officially proposes virtual threads, it's time to take a close look at them: s...

www.youtube.com

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