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Karsten Silz
Karsten Silz

Posted on • Originally published at

How to Build Java Applications Today #62


Java 18 is here, zero-day exploit hits Spring Boot, Kotlin, Postgres, Jakarta EE, and Flutter lose job ad mentions, Quarkus is #3 in job ad mentions for the first time, and I spoke at QCon London.


Welcome to my newsletter “How To Build Java Applications Today”! If you like it, then subscribe to it on Substack! Or read it on or Medium. Even better: Share it with people who may be interested.

Next Issue: Wednesday, May 4, 2022

My newsletter is published on the first Wednesday of every month.


This issue is late because I gave a talk at QCon London and updated all job charts, I spoke at JavaLand in Germany and the Google Developer Group Milton Keynes.

Read Stand-Up

Technology Index

Popularity trends: Kotlin, Postgres, Jakarta EE, and Flutter are the “losers of job ad mentions” this month. Quarkus is #3 in job ads mentions for the first time (behind Spring Boot & Jakarta EE). Also, see my recommendations for a JVM language, a database, a back-end framework, a web framework, and a mobile app framework.

Read the Technology Index

Release Radar

OpenJDK, Micronaut, Eclipse, VS Code, and Netbeans had major releases. Maven, Gradle, Spring Boot, Quarkus, and DropWizard had minor ones.

Read the Release Radar

New & Noteworthy

Java 18 is here, zero-day exploit hits Spring Boot, and Java Heap Deep Dive, Part 2.

Read New & Noteworthy


Karsten Silz is the author of this newsletter. He is a full-stack web & mobile developer with 23 years of Java experience, author, speaker, and marathon runner. Karsten got a Master's degree in Computer Science at the Dresden University of Technology (Germany) in 1996.

Karsten has worked in Europe and the US. He co-founded a software start-up in the US in 2004. Karsten led product development for 13 years and left after the company was sold successfully. He co-founded the UK SaaS start-up "Your Home in Good Hands" as CTO in 2020. Since 2019, Karsten also works as a contractor in the UK.

Karsten has this newsletter, a developer website, and a contractor site. He's on LinkedInTwitter, Xing, and GitHub. Karsten is also an author at InfoQ.

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