Jonatan Ivanov

Jonatan Ivanov is an enthusiastic Software Engineer, member of the Spring Engineering Team, one of the leaders of the Seattle Java User Group, speaker, author, certified dragon trainer. He has hands-on experience in developing and shipping innovative, production-ready software for industry-leader companies. He likes Distributed Systems, Production, Open Source, Math, Linux, Cloud environments; he is passionate about the Java Ecosystem and the Java Community. He is an Open Source contributor, writes a "develotters"-focused blog (https://develotters.com) and he can be found on Twitter(@jonatan_ivanov).

Jakarta EE 11: Beyond the Era of Java EE

This user guide provides a brief history of Java EE/Jakarta EE and a detailed overview of some of the specifications that will be updated in Jakarta EE 11.

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What do you know about the code changes that were just introduced into the codebase? When will you notice if something goes wrong?

Stable, Secure, and Affordable Java

Azul Platform Core is the #1 Oracle Java alternative, offering OpenJDK support for more versions (including Java 6 & 7) and more configurations for the greatest business value and lowest TCO.

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Couch to fully-observed code with Spring Boot 3.2, Micrometer Tracing, and Digma

Collecting important data about your code in dev and test has become trivial, it's now also getting easier to put that data to use.

Dec 06 5,5K

Jonatan Ivanov

Roni Dover

Developer Tools

Java Observability Spring

Confusing Java Strings

How to avoid trouble with Java String and Unicode characters!

Aug 23 18,8K

Jonatan Ivanov

Java Core

Retweet on Twitter Foojay.io Retweeted

Interesting read on @foojayio about the current state of the @grailsframework, at @TheASF
Written by @spoole167 interviewing @JamesFredley
https://foojay.io/today/grails-isnt-done-yet-part-1-inside-the-asf-reboot/

11:31 AM · March 25, 2026

Retweet on Twitter Foojay.io Retweeted

#Java 26 is here, and its main purpose is to provide a solid foundation for future things to come. It comes with new features, performance improvements and multiple enhancements–my blog post has all the info! 🚀

07:15 AM · March 17, 2026