Java / NLJUG

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J-Fall 2023: Prepare for Jakarta EE 11! – Ivar Grimstad

Jakarta EE 11 will be the first release of Jakarta EE after the new release cadence was introduced. The goal is to release a version of Jakarta EE around six months after an LTS release of Java. With Java 21 released in September 2023, Jakarta EE 11 is scheduled to be released around March 2024. […]

msmelt

May 15, 2024

J-Fall 2023: The Aggregate is dead. Long live the Aggregate! – Sara Pellegrini & Milan Savić

DDD’s definition of Aggregate may seem somewhat confusing – “An aggregate is a cluster of associated objects that we treat as a unit for the purpose of data changes.” Okay, let’s try to clarify – “You should consider your aggregate as a unit of consistency in your Domain.”. That doesn’t help either. As a matter […]

msmelt

May 15, 2024

J-Fall 2023: The secret life of Maven Central – Jamie Coleman

It’s just there. Just like the stars, just like electricity, just like Java. In the Java world Maven, central is the most important single service. You can get Java SDKs and even container images from various vendors, but Java code comes from only one place: Maven central. Recently though we’ve seen questions raised about […]

msmelt

May 15, 2024

J-Fall 2023: Lights, Camera, GitHub Actions! – Andres Almiray & Ixchel Ruiz

It’s been said that automating oneself out of a job is one of the best qualities of a software engineer. When it comes to building and releasing software that statement becomes more relevant than ever. GitHub is a popular choice for hosting code and since a few years ago offers a native CI/CD solution: […]

msmelt

May 15, 2024

J-Fall 2023: The human factor you might be missing when designing your system – Rafael Maia

The world of software development is undergoing a paradigm shift, and it’s not all about the code. We are realizing that technical efficiency and human-centeredness aren’t mutually exclusive – but rather, crucial allies in constructing resilient, maintainable, and effective software systems. Let’s dive into how we can unite these two seemingly disparate dimensions. In […]

msmelt

May 15, 2024

J-Fall 2023: Five ways open source will slow you down – Maarten Mulders

Software is changing the world – and even other planets. An ever-growing part of software is “open source”. But it hasn’t always been that way! And “doing something open source” is definitely no guarantee for success. There are numerous ways in which you can use open-source software and be worse off than if you did […]

msmelt

May 15, 2024

J-Fall 2023: Exploring the Power of CRaC on Embedded – Frank Delporte

Coordinated Restore at Checkpoint (CRaC) is an innovative JDK project designed to significantly reduce the startup time of Java applications. By capturing a fully warmed-up snapshot of a Java process, CRaC enables the launch of one or more JVMs from this checkpoint, resulting in faster time to the first transaction and improved overall code […]

msmelt

May 15, 2024

J-Fall 2023: Authorization beyond @RolesAllowed – Arthur van Leeuwen

We will take a tour of approaches to actually making authorization decisions in your system. This will take examples from multiple different authorization systems we’ve developed over the past 2 decades, as well as existing standards and tools, and highlight what to think about when it comes to authorization, some options for implementing […]

msmelt

May 15, 2024

J-Fall 2023: Demystifying Monads with Java – Julian Exenberger

Monads are just monoids in the category of endofunctors , what’s the problem? This is the type of theoretical answer that makes everyone learning functional programming throw their hands and say “I don’t get it!” As a result one of the most powerful Functional programming abstractions, namely Monads that Java 8 unlocked is not understood […]

msmelt

May 15, 2024

J-Fall 2023: Databases unveiled; choose wisely – Robbert Noordzij

Data and databases play a vital role within applications. Relational databases are still the most widely used, but there are more types. In this session, I aim to unveil the different types of databases and how to utilise their unique strengths within your application.

msmelt

April 11, 2024