Java Annotated Monthly – March 2022

Ida Bzowska

Welcome to the March edition of Java Annotated – our monthly collection of the latest JVM-related news and updates.

Java News

• High-Performance Java Persistence Newsletter, Issue 36 – Vlad Mihalcea’s latest newsletter provides links to articles, videos, workshops, and Stack Overflow answers for Java developers interacting with a database system.
• JDK 18 and JDK 19: What We Know So Far – Michael Redlich offers notes and predictions for the upcoming JDK 18 and JDK 19.
• Java 8 still dominates, but Java 17 wave is coming – Paul Krill provides an overview of the findings from the results of the 2022 Java Developer Productivity Report.

Java Tutorials & Tips

• Measuring ForkJoinPool Parallelism – Dr. Heinz M. Kabutz shares his thoughts on adding a parallelMultiply() method to BigInteger.
• Java records & compact constructors – Mike Kowalski explains how Java records compact constructors can help you write more idiomatic code.
• [retro post] Profiling Java Applications with Async Profiler – This classic post from Isuru Perera is an inspiring introduction to using the Async profiler for profiling Java applications.
• Generate Server Code Using OpenAPI Generator – Gunter Rotsaert takes a closer look at the OpenAPI generator.
• An Introduction to AWS Serverless Application Model – Gunter Rotsaert creates an AWS SAM project from scratch.
• Modern file input/output with Java: Going fast with NIO and NIO.2 – In this blog post, Ben Evans explains how to move a lot of file data or socket data quickly.
• ‘JEP Café‘ – a monthly show discussing how Java and OpenJDK are evolving through JEPs (JDK Enhancement Proposal). It’s a very inspirational playlist – We’d highly recommend the 9th episode on Refactoring Java 8 code with Java 17 new features.
• Java Pub House episode 100 – This podcast unveils the mysteries of the “Cloud”. Learn everything you need to know to troubleshoot and navigate it next time something unpredictable happens.
• Spring Tips: easy IoT integration with HiveMQ, Spring Integration MQTT, and Spring Native – Josh Long’s show on Internet of Things with a guest appearance from Mary Grygleski.
• [podcast] Inside Java Podcast: Episode 22 – David Delabassee sat down with Julia Boes to talk about the Simple Web Server (SWS).
• Design Insights from Unit Testing – Victor Rentea provides practical advice on getting feedback on your code design from unit testing.
• The best way to write a Spring Data Exists Query – Vlad Mihalcea provides the most efficient solution from an SQL perspective.
• Debugging Tutorial – Shai Almog covers topics such as Java Return Value, IntelliJ IDEA Jump to Line, and more.
• ​​The JDK Flight Recorder File Format – one of Java’s secret weapons described in the blogpost by Gunnar Morling.
• ​​Comparing Ethereum Blockchain and Classical Java Enterprise Architecture – similarities, differences, advantages, and disadvantages, by Dmitry Egorov.
• Card Table Card Size Shenanigans – what does JDK-8272773 bring to the table? Find out in this blog post by Thomas Schatzl.
• Understanding the constant pool inside a Java class file – Andrew Binstock’s blogpost on navigating decompiled Java classes.

Languages, Frameworks, Libraries, and Technologies

• Smart Step-Into for Microservices Debugging – Yuriy Artamonov introduces a new IntelliJ IDEA plugin that simplifies the process of debugging microservices.
• JobRunr – a library to perform background processing on a JVM.
• jMolecules – a set of libraries to help developers implement domain models in distraction-free, plain-old Java.
• This Week in Spring – March 8th, 2022 – Josh Long delivers the new Spring updates.
• Interview with Magnus Madsen about the Flix Programming Language – this article is about the interesting Flix language.
• IntelliJ IDEA 2022.1 EAP 4 – Maria Kosukhina gives a nice update of the Docker improvements, Kubernetes updates, and more.
• Groovy 4.0 – release notes.

Kotlin Corner

• Exploring Kotlin’s Context Receivers – Simon Vergauwen gives an overview on the long-awaited Context Receivers feature that has just been released.
• DSL with new context receivers – Timothy Earley provides an example usage of the new Context Receivers feature.
• Announcing Arrow Analysis – Alejandro Serrano introduces the first public release of a Kotlin compiler plugin.
• My favorite Kotlin feature – Simon Vergauwen talks about his favorite Kotlin feature, and no, it’s not Nullability
• Kotlin Coroutines Flow in a nutshell – Alexey Bykov explains Flow.
• Two chapters from the book Kotlin Coroutines by Marcin Moskała: Combining flows: merge, zip, and combine and Collecting values on flow: fold and scan.
• Object Detection with KotlinDL and Ktor – a supplement to Alexey Zinoviev’s live stream.
• FOSDEM 2022 video playlist from Kotlin devroom.
• A new AWS SDK for Kotlin by Ian Botsford.
• Math architecture in Kotlin by Alexander Nozik.

Conferences and Events

• JavaLand 2022 – the Java community conference at Phantasialand Bruehl, Brühl, North Rhine-Westphalia, Germany, March 15–17, 2022. 
• Voxxed Days Bucharest – an online community conference by developers, for developers, March 23-25, 2022.

That’s all for this month. Thank you to everyone who contributed to this JAM, especially Anton Arhipov, who contributed a lot of materials to study before releasing this issue. If you’d like to add something to the next Java Annotated Monthly, please send an email to us at (JAM@jetbrains.com) or get in touch on Twitter.

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