Holger Brands
@holgerbrands.bsky.social
Software Architecture and Design | Java and JVM | Distributed Systems
Reposted by Holger Brands
#JUnit 6.0.0 is released!
✨ Java 17 and Kotlin 2.2 baseline
🌄 JSpecify nullability annotations
🛫 Integrated JFR support
🚟 Kotlin suspend function support
🛑 Support for cancelling test execution
⏭️ New `--fail-fast` mode for ConsoleLauncher
🧹 Removal of deprecated APIs
docs.junit.org/6.0.0/releas...
✨ Java 17 and Kotlin 2.2 baseline
🌄 JSpecify nullability annotations
🛫 Integrated JFR support
🚟 Kotlin suspend function support
🛑 Support for cancelling test execution
⏭️ New `--fail-fast` mode for ConsoleLauncher
🧹 Removal of deprecated APIs
docs.junit.org/6.0.0/releas...
JUnit Release Notes
docs.junit.org
September 30, 2025 at 8:50 AM
#JUnit 6.0.0 is released!
✨ Java 17 and Kotlin 2.2 baseline
🌄 JSpecify nullability annotations
🛫 Integrated JFR support
🚟 Kotlin suspend function support
🛑 Support for cancelling test execution
⏭️ New `--fail-fast` mode for ConsoleLauncher
🧹 Removal of deprecated APIs
docs.junit.org/6.0.0/releas...
✨ Java 17 and Kotlin 2.2 baseline
🌄 JSpecify nullability annotations
🛫 Integrated JFR support
🚟 Kotlin suspend function support
🛑 Support for cancelling test execution
⏭️ New `--fail-fast` mode for ConsoleLauncher
🧹 Removal of deprecated APIs
docs.junit.org/6.0.0/releas...
Reposted by Holger Brands
Java 25 / JDK 25: General Availability: mail.openjdk.org/pipermail/jd...
Features: openjdk.org/projects/jdk...
Downloads: jdk.java.net/25/
#Java25 #JDK25 #OpenJDK #Java
Features: openjdk.org/projects/jdk...
Downloads: jdk.java.net/25/
#Java25 #JDK25 #OpenJDK #Java
Java 25 / JDK 25: General Availability
mail.openjdk.org
September 16, 2025 at 1:26 PM
Java 25 / JDK 25: General Availability: mail.openjdk.org/pipermail/jd...
Features: openjdk.org/projects/jdk...
Downloads: jdk.java.net/25/
#Java25 #JDK25 #OpenJDK #Java
Features: openjdk.org/projects/jdk...
Downloads: jdk.java.net/25/
#Java25 #JDK25 #OpenJDK #Java
Reposted by Holger Brands
Ever wonder which #Spring project versions map to the latest Spring Boot release? 🤔
There is no more guessing if you navigate to spring.io/projects/gen...
There is no more guessing if you navigate to spring.io/projects/gen...
August 7, 2025 at 10:08 PM
Ever wonder which #Spring project versions map to the latest Spring Boot release? 🤔
There is no more guessing if you navigate to spring.io/projects/gen...
There is no more guessing if you navigate to spring.io/projects/gen...
Reposted by Holger Brands
✨ New blog post: "STF Milestone 4: Parameterized test classes"
JUnit 5.13 introduced parameterized test classes (in addition to methods). They are a powerful testing tool that has long been missing from JUnit Jupiter...
👉 marcphilipp.de/blog/2025/06...
JUnit 5.13 introduced parameterized test classes (in addition to methods). They are a powerful testing tool that has long been missing from JUnit Jupiter...
👉 marcphilipp.de/blog/2025/06...
June 7, 2025 at 11:52 AM
✨ New blog post: "STF Milestone 4: Parameterized test classes"
JUnit 5.13 introduced parameterized test classes (in addition to methods). They are a powerful testing tool that has long been missing from JUnit Jupiter...
👉 marcphilipp.de/blog/2025/06...
JUnit 5.13 introduced parameterized test classes (in addition to methods). They are a powerful testing tool that has long been missing from JUnit Jupiter...
👉 marcphilipp.de/blog/2025/06...
Reposted by Holger Brands
Java 25 enters Rampdown Phase One – and is packed with features:
✅ Scoped Values
✅ Compact Source Files + Instance Main Methods
✅ Flexible Constructor Bodies
✅ Stable Values (Preview)
✅ Structured Concurrency revamp
Full overview:
👉 www.happycoders.eu/java/java-25...
#Java #Java25
✅ Scoped Values
✅ Compact Source Files + Instance Main Methods
✅ Flexible Constructor Bodies
✅ Stable Values (Preview)
✅ Structured Concurrency revamp
Full overview:
👉 www.happycoders.eu/java/java-25...
#Java #Java25
Java 25 Features (with Examples)
Java 25: Scoped Values, Module Import Declarations, Compact Source Files, Instant Main Methods, Flexible Constructor Bodies, Compact Object Headers and more...
www.happycoders.eu
June 5, 2025 at 8:25 AM
Java 25 enters Rampdown Phase One – and is packed with features:
✅ Scoped Values
✅ Compact Source Files + Instance Main Methods
✅ Flexible Constructor Bodies
✅ Stable Values (Preview)
✅ Structured Concurrency revamp
Full overview:
👉 www.happycoders.eu/java/java-25...
#Java #Java25
✅ Scoped Values
✅ Compact Source Files + Instance Main Methods
✅ Flexible Constructor Bodies
✅ Stable Values (Preview)
✅ Structured Concurrency revamp
Full overview:
👉 www.happycoders.eu/java/java-25...
#Java #Java25
May 20, 2025 at 8:28 PM
Excellent resources below: 😎
Struggling with thread-safe lazy initialization and can’t wait for #StableValues? Two new articles cover Double-Checked Locking and the Initialization-on-Demand Holder idioms in Java:
www.happycoders.eu/java/double-...
www.happycoders.eu/java/initial...
#Java #StableValues #DoubleCheckedLocking
www.happycoders.eu/java/double-...
www.happycoders.eu/java/initial...
#Java #StableValues #DoubleCheckedLocking
Double-Checked Locking in Java
Discover the Double-Checked Locking pattern in Java: Optimize thread-safe, lazy object initialization without performance losses.
www.happycoders.eu
May 9, 2025 at 11:56 AM
Excellent resources below: 😎
Reposted by Holger Brands
Just published:
"Stable Values in Java 25: Finally Initialize Values Safely!"
Learn how this new preview feature solves common multi-threading initialization problems. No need to wait for Java 25 - get the details now!
www.happycoders.eu/java/stable-...
#Java #Java25 #StableValues
"Stable Values in Java 25: Finally Initialize Values Safely!"
Learn how this new preview feature solves common multi-threading initialization problems. No need to wait for Java 25 - get the details now!
www.happycoders.eu/java/stable-...
#Java #Java25 #StableValues
Stable Values in Java - Finally Initialize Values Safely!
What are Stable Values and how do you use them? What are Stable Lists, Stable Maps, and Stable Functions? How do Stable Values work internally?
www.happycoders.eu
April 9, 2025 at 10:09 AM
Just published:
"Stable Values in Java 25: Finally Initialize Values Safely!"
Learn how this new preview feature solves common multi-threading initialization problems. No need to wait for Java 25 - get the details now!
www.happycoders.eu/java/stable-...
#Java #Java25 #StableValues
"Stable Values in Java 25: Finally Initialize Values Safely!"
Learn how this new preview feature solves common multi-threading initialization problems. No need to wait for Java 25 - get the details now!
www.happycoders.eu/java/stable-...
#Java #Java25 #StableValues
Reposted by Holger Brands
This is the moment you've all been waiting for... 🥁
#JUnit Jupiter support for @ParameterizedClass as a companion to the existing @ParameterizedTest support! 🚀
@marcphilipp.de has put a lot of work into this, and we're eager for you to try it out and provide feedback!!!
#JUnit Jupiter support for @ParameterizedClass as a companion to the existing @ParameterizedTest support! 🚀
@marcphilipp.de has put a lot of work into this, and we're eager for you to try it out and provide feedback!!!
#JUnit 5.13.0-M1 is ready for testing!
🪄 Introduce ClassTemplate and ParameterizedClass support
🗒 Add stdout/stderr redirecting options to ConsoleLauncher
🔍 New test discovery support in EngineTestKit
🐞 Bug fixes and other minor improvements
junit.org/junit5/docs/...
🪄 Introduce ClassTemplate and ParameterizedClass support
🗒 Add stdout/stderr redirecting options to ConsoleLauncher
🔍 New test discovery support in EngineTestKit
🐞 Bug fixes and other minor improvements
junit.org/junit5/docs/...
JUnit 5 Release Notes
junit.org
March 21, 2025 at 2:46 PM
This is the moment you've all been waiting for... 🥁
#JUnit Jupiter support for @ParameterizedClass as a companion to the existing @ParameterizedTest support! 🚀
@marcphilipp.de has put a lot of work into this, and we're eager for you to try it out and provide feedback!!!
#JUnit Jupiter support for @ParameterizedClass as a companion to the existing @ParameterizedTest support! 🚀
@marcphilipp.de has put a lot of work into this, and we're eager for you to try it out and provide feedback!!!
Does anyone know the implications for #Java Webstart apps?
If I'm not mistaken the JNLP spec explicitly mentions the SecurityManager. Will there be a spec revision or other measures?
If I'm not mistaken the JNLP spec explicitly mentions the SecurityManager. Will there be a spec revision or other measures?
Yup, the Security Manager is gone! JEP 486 describes what we did in JDK 24, and JEP 411 explains the rationale.
openjdk.org/jeps/411
openjdk.org/jeps/486
openjdk.org/jeps/411
openjdk.org/jeps/486
openjdk.org
January 25, 2025 at 8:40 PM
Does anyone know the implications for #Java Webstart apps?
If I'm not mistaken the JNLP spec explicitly mentions the SecurityManager. Will there be a spec revision or other measures?
If I'm not mistaken the JNLP spec explicitly mentions the SecurityManager. Will there be a spec revision or other measures?
Reposted by Holger Brands
I have just merged into Spring Framework main branch the huge commit (3458 files changed) that migrates the codebase to JSpecify annotations. That will allow Spring Framework 7 and related portfolio projects to provide next-level null-safety support to avoid NullPointerException at runtime.
Null-safety :: Spring Framework
docs.spring.io
December 19, 2024 at 10:52 AM
I have just merged into Spring Framework main branch the huge commit (3458 files changed) that migrates the codebase to JSpecify annotations. That will allow Spring Framework 7 and related portfolio projects to provide next-level null-safety support to avoid NullPointerException at runtime.
Reposted by Holger Brands
Mapping ZonedDateTime and OffsetDateTime with Hibernate can be an issue. Not all databases support TIMESTAMP_WITH_TIMEZONE, and Hibernate has to convert it.
Starting with version 6, you can decide how to handle the timezone information by providing a TimeZoneStorageType.
These are your options:
Starting with version 6, you can decide how to handle the timezone information by providing a TimeZoneStorageType.
These are your options:
December 4, 2024 at 3:11 PM
Mapping ZonedDateTime and OffsetDateTime with Hibernate can be an issue. Not all databases support TIMESTAMP_WITH_TIMEZONE, and Hibernate has to convert it.
Starting with version 6, you can decide how to handle the timezone information by providing a TimeZoneStorageType.
These are your options:
Starting with version 6, you can decide how to handle the timezone information by providing a TimeZoneStorageType.
These are your options:
Reposted by Holger Brands
Improve how you architect webapps.
Patterns.dev
Learn JavaScript design and performance patterns for building more powerful web applications.
www.patterns.dev
December 14, 2024 at 12:53 PM
Improve how you architect webapps.
Reposted by Holger Brands
Interesting writeup from Stuart Marks @smarks.bsky.social:
"Permission checking and handling of privileged operations were a continuing maintenance burden on the JDK code. It’s good be rid of it." 🎉
stuartmarks.wordpress.com/2024/12/12/d...
#Java #JDK
"Permission checking and handling of privileged operations were a continuing maintenance burden on the JDK code. It’s good be rid of it." 🎉
stuartmarks.wordpress.com/2024/12/12/d...
#Java #JDK
Detoxifying the JDK Source Code
There’s been a fair amount of churn through the JDK source code recently, up until Rampdown Phase 1 of JDK 24, which was last week. (RDP1 is similar to what other projects might call “f…
stuartmarks.wordpress.com
December 14, 2024 at 2:46 AM
Interesting writeup from Stuart Marks @smarks.bsky.social:
"Permission checking and handling of privileged operations were a continuing maintenance burden on the JDK code. It’s good be rid of it." 🎉
stuartmarks.wordpress.com/2024/12/12/d...
#Java #JDK
"Permission checking and handling of privileged operations were a continuing maintenance burden on the JDK code. It’s good be rid of it." 🎉
stuartmarks.wordpress.com/2024/12/12/d...
#Java #JDK
Reposted by Holger Brands
#WireMock Now Has an Official #SpringBoot Integration
WireMock Now Has an Official Spring Boot Integration
Embed WireMock directly into Spring for annotation-driven configuration, automatic resource management, and simple declarative configuration of mocked APIs.
www.wiremock.io
December 8, 2024 at 9:31 AM
#WireMock Now Has an Official #SpringBoot Integration
Reposted by Holger Brands
How is this real? Nanowar, Napalm Record... #java based song. #metal music. Unfortunatly no simpler main method 😂
www.youtube.com/watch?v=yup8...
www.youtube.com/watch?v=yup8...
NANOWAR OF STEEL - HelloWorld.java (Source Code Video) | Napalm Records
YouTube video by Napalm Records
www.youtube.com
December 3, 2024 at 3:31 PM
How is this real? Nanowar, Napalm Record... #java based song. #metal music. Unfortunatly no simpler main method 😂
www.youtube.com/watch?v=yup8...
www.youtube.com/watch?v=yup8...
Reposted by Holger Brands
📝 "Revisiting the Outbox Pattern"
New blog post is out, taking a fresh look at the outbox pattern: how to implement it correctly, is it still relevant, which alternatives exist?
👉 www.decodable.co/blog/revisit...
New blog post is out, taking a fresh look at the outbox pattern: how to implement it correctly, is it still relevant, which alternatives exist?
👉 www.decodable.co/blog/revisit...
October 31, 2024 at 3:02 PM
📝 "Revisiting the Outbox Pattern"
New blog post is out, taking a fresh look at the outbox pattern: how to implement it correctly, is it still relevant, which alternatives exist?
👉 www.decodable.co/blog/revisit...
New blog post is out, taking a fresh look at the outbox pattern: how to implement it correctly, is it still relevant, which alternatives exist?
👉 www.decodable.co/blog/revisit...
Reposted by Holger Brands
It is always worthwhile to read changelogs.
For example, #liquibase 4.30.0 and above will now collect statistics (#telemetry) with opt-out instead of opt-in. Thanks for nothing.
New #java projects will be using #flyway.
docs.liquibase.com/analytics/ho...
For example, #liquibase 4.30.0 and above will now collect statistics (#telemetry) with opt-out instead of opt-in. Thanks for nothing.
New #java projects will be using #flyway.
docs.liquibase.com/analytics/ho...
Anonymous Analytics
This page describes the anonymous analytics that Liquibase collects.
docs.liquibase.com
November 10, 2024 at 5:26 PM
It is always worthwhile to read changelogs.
For example, #liquibase 4.30.0 and above will now collect statistics (#telemetry) with opt-out instead of opt-in. Thanks for nothing.
New #java projects will be using #flyway.
docs.liquibase.com/analytics/ho...
For example, #liquibase 4.30.0 and above will now collect statistics (#telemetry) with opt-out instead of opt-in. Thanks for nothing.
New #java projects will be using #flyway.
docs.liquibase.com/analytics/ho...
November 30, 2024 at 5:13 PM
Reposted by Holger Brands
Spring Boot 3.4.0 available now
Level up your Java code and explore what Spring can do for you.
spring.io
November 21, 2024 at 8:25 PM
Reposted by Holger Brands
Apache Maven 4.0.0-rc-1 just dropped! I’ve been running 4.0.0 betas for a while now and definitely loved it so far.
Make sure to give the new features and major improvements a swing yourself: maven.apache.org/download.cgi
If you run into anything make sure to reach out!
#Java #Apache #Maven
Make sure to give the new features and major improvements a swing yourself: maven.apache.org/download.cgi
If you run into anything make sure to reach out!
#Java #Apache #Maven
Download Apache Maven – Maven
maven.apache.org
November 29, 2024 at 9:56 AM
Apache Maven 4.0.0-rc-1 just dropped! I’ve been running 4.0.0 betas for a while now and definitely loved it so far.
Make sure to give the new features and major improvements a swing yourself: maven.apache.org/download.cgi
If you run into anything make sure to reach out!
#Java #Apache #Maven
Make sure to give the new features and major improvements a swing yourself: maven.apache.org/download.cgi
If you run into anything make sure to reach out!
#Java #Apache #Maven
Epic new #JEPCafe episode!
The episode 23 of the #JEPCafe series is out! Grab it while it's hot!
www.youtube.com/watch?v=jqUh...
www.youtube.com/watch?v=jqUh...
Better Java Streams with Gatherers - JEP Cafe #23
YouTube video by Java
www.youtube.com
November 29, 2024 at 1:02 PM
Epic new #JEPCafe episode!
Welcome everybody!
Finally landed on Bluesky as well.
Let's see how it goes.🙂
Finally landed on Bluesky as well.
Let's see how it goes.🙂
November 28, 2024 at 11:55 PM
Welcome everybody!
Finally landed on Bluesky as well.
Let's see how it goes.🙂
Finally landed on Bluesky as well.
Let's see how it goes.🙂