Java Annotated Monthly – April 2021

Wow what a big month! Java 16 is out, IntelliJ IDEA 2021.1 is out, we had Internation Women’s Day, the equinox, Passover and Easter and other holidays. On top of that, it’s a year since Europe went into first lockdown. I’ve been wondering why I’m so exhausted and now I understand – it’s not just the last month or two, it’s the last year. It’s now the 65467543985th day of March 2020, as far as I’m concerned, and it’s still not over.

Related: this month’s Java Annotated Monthly is HUGE, so there are more links and fewer "annotations" this month.

Be kind to each other, and be kind to yourself.

Java Annotated Monthly Logo with coffee mug and JetBrains logo

Java News

Java 16 was released in March. This is a particularly exciting release as records are now a standard feature, ready for use in production code.

Java Tutorials & Tips

Languages, Frameworks, Libraries and Technologies

Spring and Spring Boot

The Java developer advocates are just starting to develop a new application with Spring Boot, so expect to see a bit more content around Spring and Spring Boot for the next few months as we Google a lot of stuff.

Design & Architecture

Code Reviews

Code Reviews are a favourite topic of mine.


Our occasional section on developer relations/advocacy content.

Culture & Community

One of the nice things about March is the spotlight being placed on women and women’s contributions (of course, would be lovely to see that all year round).

Book Suggestions

The "Current Situation"

It’s over a year since the first lockdowns started in Europe, even longer since this all began for our friends in Asia. Some countries are starting to come out of the other side of it, some are bracing for the fourth wave. All of us want to get back to "normal", but the pandemic has exacerbated inequalities and created new ones. We can’t get back to where we were before, and many don’t want to – remote working can be lonely, for sure, but losing that commute, or living somewhere different, appeals to many. Things will change. Things will have to change. And technology, and technologists like us, have the opportunity to try to drive that will help more people, like ethical restaurant delivery firms (Spanish, sorry) or Bias identification & Remediation tools.

And Finally

A round up of blog posts and videos from IntelliJ IDEA and JetBrains:

And please, take part in the Developer Ecosystem 2021 survey!

If you have any interesting or useful Java / JVM news to share via Java Annotated Monthly, leave a comment or email us (

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