#java20 — Public Fediverse posts

At work, I maintain a #java app with #JavaEE backend and #vue2 frontend. It's #java17 already, #JakartaEE will shortly follow due to the #ApacheShiro 2.0 update. It runs on #Java20 so it will be ported to #java21 soon!

However, that's only half of my job. The other is: making Java, web- and appservers ready for deployment, hardening everything, creating scripts for automation and deployment, a few other Java apps...

... I love it, and I have never seen a similar job description in my life!

At work, I maintain a #java app with #JavaEE backend and #vue2 frontend. It's #java17 already, #JakartaEE will shortly follow due to the #ApacheShiro 2.0 update. It runs on #Java20 so it will be ported to #java21 soon!

However, that's only half of my job. The other is: making Java, web- and appservers ready for deployment, hardening everything, creating scripts for automation and deployment, a few other Java apps...

... I love it, and I have never seen a similar job description in my life!

How did i miss #Java 20 being released?!

Looks like I've got a small task to update some containers this week then

#Java20 #tech #technology #code

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! 🧵

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! 🧵

I would love to get your feedback

When you implement a Micronaut-based application that uses Kafka, Which Java Library do you use?

cc @micronautfw @ApacheKafka

#Kafka #microservices #micronaut #java #softwaredevelopment #softwareengineering #development #kafkastreams #java20 #eventdriven #architecture

I would love to get your feedback

When you implement a Micronaut-based application that uses Kafka, Which Java Library do you use?

cc @micronautfw @ApacheKafka

#Kafka #microservices #micronaut #java #softwaredevelopment #softwareengineering #development #kafkastreams #java20 #eventdriven #architecture

🆕 #Java20 is now generally available!

This release features (7) #JEPs that provide a continued contribution toward #ProjectAmber, #ProjectLoom & #ProjectPanama along with new rounds of preview and incubation.

We examine a few of these new features here, on #InfoQ: http://bit.ly/3LKvRDf

#Java #Oracle

🆕 #Java20 is now generally available!

This release features (7) #JEPs that provide a continued contribution toward #ProjectAmber, #ProjectLoom & #ProjectPanama along with new rounds of preview and incubation.

We examine a few of these new features here, on #InfoQ: http://bit.ly/3LKvRDf

#Java #Oracle

/me updates one small module to build under #Java20 and finds #JaCoCo fails to instrument due to class version issues. I guess I’m waiting on JaCoco 0.8.9 to be released ( seems fixed in Snapshot Build 0.8.9.202303220432 )

/me updates one small module to build under #Java20 and finds #JaCoCo fails to instrument due to class version issues. I guess I’m waiting on JaCoco 0.8.9 to be released ( seems fixed in Snapshot Build 0.8.9.202303220432 )

#Java20 reincubates two #ProjectLoom scalability features, making them prime candidates to become standard in September’s #Java #LTS. Feat @marcushellberg and @AndrewCornwall #OracleDevLive
https://www.techtarget.com/searchsoftwarequality/news/365533479/Java-20-Project-Loom-updates-set-stage-for-Java-LTS

#Java20 reincubates two #ProjectLoom scalability features, making them prime candidates to become standard in September’s #Java #LTS. Feat @marcushellberg and @AndrewCornwall #OracleDevLive
https://www.techtarget.com/searchsoftwarequality/news/365533479/Java-20-Project-Loom-updates-set-stage-for-Java-LTS

My talk on #Java20 Virtual Threads (Loom) from #JavaLand

Slides (on speakerdeck)

https://speakerdeck.com/jexp/looming-marvelous-virtual-threads-in-java-javaland

Code
https://gist.github.com/jexp/220051816ba8a305872c4f1487a13d72

My talk on #Java20 Virtual Threads (Loom) from #JavaLand

Slides (on speakerdeck)

https://speakerdeck.com/jexp/looming-marvelous-virtual-threads-in-java-javaland

Code
https://gist.github.com/jexp/220051816ba8a305872c4f1487a13d72

Great to see the #Java20 releases coming in for #SDKman

sdk list java | grep ' 20 '

20-amzn
20-open
20-librca
20-oracle
20-zulu

Great to see the #Java20 releases coming in for #SDKman

sdk list java | grep ' 20 '

20-amzn
20-open
20-librca
20-oracle
20-zulu

Here's a handful of #Java20 roundup posts for your reading pleasure. :)

- https://inside.java/2023/03/21/the-arrival-of-java-20/
- https://www.phoronix.com/news/OpenJDK-Java-20-GA
- https://www.infoq.com/news/2023/03/java20-released/

Java 20 is now available.
#java #Java20 #JDK20 #OpenJDK

Today #Java20 was released! 🤩 ☕

Today #Java20 was released! 🤩 ☕

To celebrate the release of #Java20, @HelenJoScott and I are giving a 20% discount on 20 copies of Getting to Know IntelliJ IDEA. One of my favourite features of @intellijidea is how it helps you use the latest version of @java.

https://leanpub.com/gettingtoknowIntelliJIDEA/c/NC0LZWMnfRh2

To celebrate the release of #Java20, @HelenJoScott and I are giving a 20% discount on 20 copies of Getting to Know IntelliJ IDEA. One of my favourite features of @intellijidea is how it helps you use the latest version of @java.

https://leanpub.com/gettingtoknowIntelliJIDEA/c/NC0LZWMnfRh2

🚨#Java 20 is now available!🚨

Your...

☑️ FREE
☑️ multi-platform
☑️ production-ready
☑️ open source
☑️ binary release

...made available by @Oracle

Learn more ➡️ https://inside.java/2023/03/21/the-arrival-of-java-20/

#OpenJDK #JDK #JDK20 #Java20

🚨#Java 20 is now available!🚨

Your...

☑️ FREE
☑️ multi-platform
☑️ production-ready
☑️ open source
☑️ binary release

...made available by @Oracle

Learn more ➡️ https://inside.java/2023/03/21/the-arrival-of-java-20/

#OpenJDK #JDK #JDK20 #Java20

JDK 20, the reference implementation of Java 20, is now Generally Available.
https://jdk.java.net/20/
#Java #Java20

JDK 20, the reference implementation of Java 20, is now Generally Available.
https://jdk.java.net/20/
#Java #Java20

Java 20 / JDK 20: General Availability: https://mail.openjdk.org/pipermail/jdk-dev/2023-March/007517.html #java20 #jdk20 #openjdk #java

Java 20 / JDK 20: General Availability: https://mail.openjdk.org/pipermail/jdk-dev/2023-March/007517.html #java20 #jdk20 #openjdk #java

Tomorrow is Level Up event with #Java20 official announcement and #Helidon #Nima presentation by Joe DiPol. It's free, but you need to register. You can do it here: https://developer.oracle.com/community/events/devlive-level-up-march-2023.html

Tomorrow is Level Up event with #Java20 official announcement and #Helidon #Nima presentation by Joe DiPol. It's free, but you need to register. You can do it here: https://developer.oracle.com/community/events/devlive-level-up-march-2023.html

SUMMARY

As boring as #Java20 may seem on the surface, releases like it are critical to Java's continued success as they advance Java on all fronts. And, in all honesty, a little rest between groundbreaking changes is welcome - who wants a Java 9 every six months? 😉

SUMMARY

As boring as #Java20 may seem on the surface, releases like it are critical to Java's continued success as they advance Java on all fronts. And, in all honesty, a little rest between groundbreaking changes is welcome - who wants a Java 9 every six months? 😉

PERFORMANCE

G1 concurrent refinement thread handling has been refactored to reduce activity spikes and handle write barriers more efficiently: https://bugs.openjdk.org/browse/JDK-8137022.

(See attached image for impact on options.)

G1's preventive collections were introduced in 17 to avoid expensive evacuation failures due to abrupt mass allocations but often do more harm than good, so #Java20 disables them: https://bugs.openjdk.org/browse/JDK-8293861 Re-enable with diagnostic VM option `-XX:+G1UsePreventiveGC`.

PERFORMANCE

G1 concurrent refinement thread handling has been refactored to reduce activity spikes and handle write barriers more efficiently: https://bugs.openjdk.org/browse/JDK-8137022.

(See attached image for impact on options.)

G1's preventive collections were introduced in 17 to avoid expensive evacuation failures due to abrupt mass allocations but often do more harm than good, so #Java20 disables them: https://bugs.openjdk.org/browse/JDK-8293861 Re-enable with diagnostic VM option `-XX:+G1UsePreventiveGC`.

SECURITY

As every release, #Java20 updates Java to the constantly evolving sec landscape:

* DTLS 1.0 disabled by default: https://bugs.openjdk.org/browse/JDK-8256660
* TLS_ECDH_* cipher suites disabled: https://bugs.openjdk.org/browse/JDK-8279164

(You can re-enable at your own risk with `jdk.tls.disabledAlgorithms`.)

New methods on `SSLParameters` to inspect/configure key exchange algorithms for establishing (D)TLS connections: https://bugs.openjdk.org/browse/JDK-8281236

SECURITY

As every release, #Java20 updates Java to the constantly evolving sec landscape:

* DTLS 1.0 disabled by default: https://bugs.openjdk.org/browse/JDK-8256660
* TLS_ECDH_* cipher suites disabled: https://bugs.openjdk.org/browse/JDK-8279164

(You can re-enable at your own risk with `jdk.tls.disabledAlgorithms`.)

New methods on `SSLParameters` to inspect/configure key exchange algorithms for establishing (D)TLS connections: https://bugs.openjdk.org/browse/JDK-8281236

Cloud Builders: Java Conf agenda is rich 🤩

Сode&practice focussed sessions, Java puzzle and more!
#OpenAI #Java20 #ApachePulsar #JavaPatterns #Serverless #Spring #Azure #CodeGuru #CodeWhisperer #OpenJDK #HotSpotJava #Kubernetes #Kotlin #micronaut #microservices #googlecloud #cloudrun #cloudfunctions #appengine
#LambdaSnapStart #JavaLambdaFunctions

Husten to register :blobaww:
https://cloud-builders.tech

Cloud Builders: Java Conf agenda is rich 🤩

Сode&practice focussed sessions, Java puzzle and more!
#OpenAI #Java20 #ApachePulsar #JavaPatterns #Serverless #Spring #Azure #CodeGuru #CodeWhisperer #OpenJDK #HotSpotJava #Kubernetes #Kotlin #micronaut #microservices #googlecloud #cloudrun #cloudfunctions #appengine
#LambdaSnapStart #JavaLambdaFunctions

Husten to register :blobaww:
https://cloud-builders.tech

📢 #Java 20 Launch! 📢

Java developers, #Java20 is right around the corner. Join the Java Team either in-person or online for the launch as part of Oracle's new FREE "DevLive: Level Up" event series.
Learn more: https://inside.java/2023/02/27/devlive-java-developer-day/
Register here: https://developer.oracle.com/devlive-level-up/

First JDK 20 Release Candidate: https://mail.openjdk.org/pipermail/jdk-dev/2023-February/007364.html; downloads: https://jdk.java.net/20/ #jdk20 #java20 #openjdk #java #testItNow

First JDK 20 Release Candidate: https://mail.openjdk.org/pipermail/jdk-dev/2023-February/007364.html; downloads: https://jdk.java.net/20/ #jdk20 #java20 #openjdk #java #testItNow

What's new in Java 20 for us, developers ?
(both in french and english)
@[email protected]

https://www.loicmathieu.fr/wordpress/informatique/java-20-quoi-de-neuf/
#java #java20