Java

Hexagonal Architecture with Java and Spring

Tom Hombergs
November 3, 2019

The term “Hexagonal Architecture” has been around for a long time. Long enough that the primary source on this topic has been offline for a while and has only recently been rescued from the archives.

Immutables in Java - Are Setters Allowed?

Tom Hombergs
October 22, 2021

In short, no. Feel free to jump right ahead to the section on bad practices. If you want to read a bit more on the why and how of immutables, have a look at the rest of this article.

Mocking with (and without) Spring Boot

Tom Hombergs
September 18, 2019

Mockito is a very popular library to support testing. It allows us to replace real objects with “mocks”, i.e. with objects that are not the real thing and whose behavior we can control within our test.

Bean Validation Anti-Patterns

Tom Hombergs
September 7, 2019

Bean Validation is the de-facto standard for implementing validation logic in the Java ecosystem and it’s a great tool to have around.

Java

Pollution-Free Dependency Management with Gradle

Tom Hombergs
July 28, 2019

Remember the days when we had to manually download every single JAR file that our project needed to run? And not only the JAR files we directly depended upon, mind you, but even those JAR files that our dependencies and our dependencies' dependencies needed to work!